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 0xa41beb118e74bbf28c8bd07615f049d114bcee9a059cd252d6f24b644851c002. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43cb8541-a6ca-464b-ae28-6ef737388be2.json and https://artists.proofprofile.net/proofs/artist/43cb8541-a6ca-464b-ae28-6ef737388be2.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 0xd8e8fb856c803808f85dd7c7027e414ab2359b5f452573044110193e4af3bcf0. 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/USHM91238861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa643b7d6cac331c3aded7747e0ea366bb4e97a93aaac76fe1ccf846e2ba017cd. 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/USHM81482493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc2981c36619b87eb6a8da4a559907b3b84dbd34db93b4e8488347adcf2bd87. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCGH1510516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd956418920d50ca4f2a9252d808d3c804bf31938d426f0579a07d8f8689b24db. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/USCGH1510525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fca6905f0fdc83e049333939d0b1f1a3e3389e8f517e5b2ae5e5b06deddc2cc. 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/USHM81849415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8800361df995032a5529ea3c2a167773ebcaf44097b9d6dcbb89d07de0c9fe. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/USHM81849425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d9620d84cb74cb61fd8c1d15dbf7a236671234f47484dadaa0c3804a39c95b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM24S1913938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fbcd6f39481b724dc1f042823eeacb776f691a5ec77e75685bbecc3b75bb25. 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/QM24S1918591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6347960c195e6b6a2801d86fd0e522a11a9dfd28e27f3458e5f21cc7db68653. 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/QZH5E1949019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b534fbfa5359e1c63c09b836abb8943f691df4b740654b382114c9accff2120. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USHM81903429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee395b4a4c3358605552ab53117b4a04f5a3a494f607a7c394ff4de68c9cdca8. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USHM81903431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7de6985f1dda086c4bc7d65280a77b2b75a3f866e3abb1f26ff67450f3cd869. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM91967067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9d154d67d0d864e30b4804859dc4374353d4155e97619863bfc6b933490f37. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GB6LT2000423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98148440023f914627e55b470a0b923a0508764a3aad7a49c22cd5b1ead2352b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GB6LT2000424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f99cf1fe05cb08ee73b5a3c66acf59c225a44a7b1de0101a462033703898ac0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GB6LT2000427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8e9ec22dfdd24dbcb3749acc0575f1d796117ad8b5a25164d143a9dd5df38c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:31:51Z), 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/GB6LT2000429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a483d7d4c1d999da2c5ec1b1d894ed921cc7ad9fbcf01583739542b43cb95b5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GB6LT2000431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e865ab8979488d65089afe5075df6e036c77666afc94cfe49a0921243ff2ef. 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/GB6LT2000446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2792615a8705f6047e82fadc8cd07eff8767769eccc178ef08f208e75b7a933. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/USCGH2342154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc2562c64717b9677e9ec769af2506d348124b8d4153b83e39f7aab50c9b508. 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/USCGH2342155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5439b99a5c8df51ce5b599582b86b6fc65f27125dc3f518a52c3a03d700c7648. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:50Z), 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/USCGH2380688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0506199827f7445efc2ba56482b3cc34aee3063927ad68ac6be8ac060c15d81a. 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/USCGH2342158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312d7085d34110c5498bf560fd310de288f2b3523306e9aa61f41573ab80e3a8. 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/AUMEV2338562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf60c462b9a32734f6adda3b5b01b3972bd0abc8b3a7350c5364690b907a7b2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUMEV2354344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fc27edd12194295e3041fd487f2023066e6d65bd83f5be120decd89bd21595. 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/AUGBT2351088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaf977ebdc6b253e2da7c81c1a5c34698981850351ea3d234644c00e034b0bc. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:58Z), 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/AUGBT2351998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8067a70b4562d3cf15612b59eb65794ef6671b243807c1cdecab16488883d5d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUMEV2427118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11189c63ce2ad1b1496914d303857a16b9a272badb4c132c199e5c99daeac1ad. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUMEV2442679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef95e4730773a3a3cedea950542c9dd4918f916b23eb41420565b1906c4d42b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AUMEV2413575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047e0edc7b35d4af2a3be06efc6d5daf0783130c1df0b6061c434341139c361d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMEV2486315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c2b9b7b041460443749a8ef2ad240ea7ed00e98a326f06a2dee041edd76d07. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/AUGBT2429806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d53864b11d994bf1d6b1978643810dd479cb8d12fb7be669b47866e7aa5a48c. 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/AUGBT2429807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3ace4d4c0995ab3b3720d198ca4b26806b2f99f3a72838d49034dd00622a76. 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/AUGBT2429808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a28944ce73efb99b8b303760b14be70bd39eb4a5840df849ec2d825f211ebb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/AUMEV2421429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a443dbfe3872ecb47286cf89b06d49e8579543f3bb9f14abeeb25273a600a1f. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:33:43Z), 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/QZPEW2501502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c944c7adfde7e153b8bdf18f04acb24b7040fcea4512dc79d8ee790d410acfa. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QT4K52580738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb1fa05c17e632b3ab86d9f7c01310f0733a1e40fd5ada27c9f01f56905e556. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUMEV2409120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa692989e2a94e744b1e600202892ef4d009825ae17e9b2c06485020fedf9c828. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3TP1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90fd4141914cf99fd890915c438ed105aa61cc3960e7468f2cc6cc1a616d394. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US3TP1800013.