1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78832b27865363107940d8d75aeac1ca56a0a4da40ba09a2764f751da51de770. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4dd2fc24-0535-433a-8a94-40719ee9b754.json and https://artists.proofprofile.net/proofs/artist/4dd2fc24-0535-433a-8a94-40719ee9b754.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e7ca4f1ce7270c4afa0ea61b92cec07eb7fa6bd7e29464055a86a92be14ecf. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRPB2185123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43b9c7d30a5ce99914bf1a6199aff8f171cab07c61f68c99142f05622f1e139. Chain 2 (Bitcoin): anchored in block 957835 (2026-07-13T09:48:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTH82192804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46a6c0affae119cf47462b32e5767c133558008f421279bfe04b7e9e3a2237b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTH92123522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48946ebee75b5877ce86c15c36df92498073000bbcd401f19814265421e529a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHK2236763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198f2c287dcf47df5a52088c246732193fc355307471d713c227cff5b4eaf5b2. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM8DG2277767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f551b9648b50bef83332750a921ec861453a17eb0ebad4310e71dcd83c52995. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFP52249069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6d42ce4171b6532feb2f998c3d121dd18ca65101041e96812540db504782f1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZD2240803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa968086e5ef326423525f98c454f0e00c62f68fae11ea7313df8d6942c67f3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS632210749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa625ed665561f1dc19866f6526ee5838c7f9a928e3df090df6e41e9d63de0cc6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS652299389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ba9f28edbd0ceb00bb6f6895946ad1456f1eba92486eb7f9d6244ef982c31c. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZJRC2239777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83b84eaded3e5576cbc461eb99ce92fbfd85ced20b12fc0f8b130442b2f04f3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2583539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d772f64de9e3c2660a33422238cebae6218cecf135bceb17e86b4c8768382e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZKDK2301903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36be09f50d3ac50cc66da38ec440adf57cd03c0284fce95b3fce3af92e2aeb5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTH92308070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc217b0700d8bbb33fca31a6943b721edfbf553d84ded7d75e25a282ec1b2d7a1. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTH92364031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3725b021ea4e261535a6fa86dfbccdeccc63c8fef21aa4874aac0c0fc04618a9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHK2339814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9c3d287dd32544d0cd5113ba60f5f3e5603fc81dc0d57ee858263f936efb5b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K2329448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5132c40a6e3b1ae867166e32b2004cbd871e97a01a39b1ed6bcb4353b23d66dd. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:07:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHM2356018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bc296032af19c06731e2d38b8d873a5b3ad953db3275863be53bc3e5c68c9f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K2331064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7be120cd673bd01efa724902bbae95091c6c0eb92c22048739d6491d1c19ae9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHP2302058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49bcae26b296e5f7468ffe52703ac88ac8b67476e122f15606f7d27e9dbae99. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2410513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e665f380b29aa0b16d0f107276084bd07afe20655228b13c5eb4e85721309f3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2410514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb78fb64aba941b8b33a30faaa8cf7a521a530755c282783ec4a4fe1c3280877. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2410515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac4ad7b57c1a3720e7365cc32e76e578206b4982da5c3ee28c0fb1e23cca6e0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM2389475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbde46fa780b90e2b711d77d1082dd303b6f7ad6e3c98aa2c567525c9d26a95. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2410516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f2d7329a2d5796e7096bfcbe17c85f0f0293bed909cadc1a458659478269fd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2410517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3accf33f0b81e011106cff9f22a79ac185fdb7778ab9fff4290a2dd9a59146b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2449060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c98bd9c384b99a33d6d07cf5c35898e2eb67ea7090bf3d7ecc65228a2964472. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2462134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404b15aed1a91ab5ae3bff1b308b2c663a9a062f7ecce071ffff86e29e0efdd2. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2479359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8686a88b28ba45a02fd86776756562ad6fd7cb04b294549ca7718457d0b49e0c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TLVEM2457631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43294782c86346aacb8a9826ac0c49d68755fecdee2f6ed2c3752da5298a650. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2450047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e56571177197537250900330d5a8f427bf1af899c405c00498ed3f998fdd4f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:03:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2477367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5229f40cb089cab4d9100d14ffb69ba38c9f2c9b8a23fa0f03eac754ebf05665. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2477368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9beb7a0d354b2417c5ea9648a7ce5bf44f5d6dbc80ad9de7a28d5800bf7094. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2477369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed8ced52e6ccf1c9cbc8d8bb150c25195739c123b26f9b0447312f9964876c2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2477370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8686a88b28ba45a02fd86776756562ad6fd7cb04b294549ca7718457d0b49e0c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TLVEM2457631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5922a8b4d8689280d8f3af5da5e5755e27cca7e29571f33546e1443f3bc167c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:39:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2477373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43294782c86346aacb8a9826ac0c49d68755fecdee2f6ed2c3752da5298a650. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2450047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ae909608bb81694ebf2b1ad26341515b1ada24b3a3f7bcd1ab71e5466f6b67. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:56:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2477374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1f52eec2728f10063b0610ad16fa451ec0364dd0dba74788a2dc36055e2804. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2477375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2a713049588f7bd8a6a2fb7f6a0a5b72dd0599b238dc9fd454475185889f63. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2477377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018c839823dca0b8a0fc15b81803c1165595e938ad521c23f5d8244e5042e090. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2477378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5d4f1cd35d311b6704e3c98a0e5d0ed6daba55ffceffb7793cffb86d175b94. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2477379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfc1d999def25f736ba6c32c0eb02b8cbe3a052098ffe4c3f087e361fbfb476. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1874159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dce3dc791542423ba0533aba6913e04bc9e9f1c80636a3f830c2b7911866f78. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1874160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b190b712c0090c1b768cb9ac2056aa0615ca5fb8f4625da99c4bcba7f80e75. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1874161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0419732d75969c5b175410e38e0fb15fec5ce6ff4aa85d1c5921804d5b537d0. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:38:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1874162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed8e768836fd8fd491cdb903acdfe641a917a67c2446269e3c850419abb6e36. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1874163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5c3ae994417df3b78157c3f1a0701020ee81cbb62e8c5093717c806cbb6716. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1874164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951a42c81e94a0fc77cbd06e619bbe08b889cce8be2ac244e2882635d417da3c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1874165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef4943bbc2fe3127c1a547179dae795bd65c52f916369a334394f678f7dc149. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1874166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a66edba4cb6d461a31c728088431c0dae7360126c8b221425a0cdeb55f93d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:25:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM2568636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f6a25e2f8ce7d55d8de986e005587f6bb975a8324eb35d8491473946676cfd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM8DG2569560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a622a824945a8a9352c4fd85bc66d94f3c5dcaf7e2a32e144b380dd699987e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2314253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200dbd3a81219d24f507555b21e8bca81c98435c8d0c18d875e2fd557edb1a60. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2201204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37857b5f03664a603712694e085c32698b3d4bffc13c9dc15651104bebbd16cc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2135615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb541448cf395c6f1609ce55b38fb12553bf9b1a15e068b980f0e12c46635f5c. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1814239.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775ab317bd8ebab71597c310d8eada83e1d038d8623cf8facdc62b03fe02e534. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLS2412452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054d5a639c9711f570db1115377fada7a69635bcdb99f4820a2037ff1685fcbb. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBE2333496.