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 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 0x35f5c0378f334fe8a34c624ecfacffa4fdec0f89131deb8a2e0c72e038f7b481. 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/162adb4a-adb2-4ddd-8b40-b92860a37f55.json and https://artists.proofprofile.net/proofs/artist/162adb4a-adb2-4ddd-8b40-b92860a37f55.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 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 0xc40aed9fea29b4c735ac97105787700853240cf376a3c61c99a0e9032a430c97. 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/IEBOG1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5285cb26f87d69f27342c143f097c11808df4f7766e46ea8546faaf0a3633da. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/IEBOG1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a0c10c511afd13e26f5a26aced3137a3da843485b8465e3cb056b9b3bc307b. 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/IEBOG1100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f57e6b448538abf1fa728d188efc5025ccd5d35fffdbc2de920751b1ca7ae9c. 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/GB52E1220004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbd6a19cd5760cbd81ce481723c4b6f9c1b4090daa906e2a2389cd6825d9a3a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GB52E1220023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ceabaf400610a536a02ade943f536fdd59333e37b988c301ba86982aa694a7. 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/GB52E1220024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7255e8ed2cb1b21eba920ceaa8a71cd9f0cbacef65ffd49f4d426f8d08661612. 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/IEBOG1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f39be90975deb128e7444aeb54e1d10e38afcf86b5bbd69e4e974e279df61a. 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/IEBOG1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4973b86fd9d9f6f26c17ebfbbea32c84dbd8f56350e388fce5a36252ee3843a4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/IEBOG1200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72bfed242ccd974d40a05877919a53e436b105515d5a46a750d58f787fd0e17. 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/IEBOG1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180d4f03373a90f1a662f138e0d1eaf44d91598e21d44fcbba6ce15a391053c2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/IEBOG1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded9d15633eb0366b4d447e6bf68e1df82fa627322041740b0b30e9a1a2fafca. 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/IEBOG1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287e6ddd6599b68e59456189816c6b47bf7a21104ecb3ba71f7a95e185deefff. 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/IEBOG1300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc653e5df3547e0351cd48a42817378baa03ca4734e474ea62caa8abe84caa0de. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/IEAAR1400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1ae3191f262a611d90f6a94dfbe8fc6febc4accd6399e03c0b5cd253ea35b7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IEAAR1400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4735a5f5408636e651453a78cb15bbb2bc87fdade3cf201ff6c8b9d27912d3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/IEAAR1400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be2f675d82668adce8e1465b947a1fe427a4acc198f7724f7af08bb874a673e. 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/IEAAR1600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3218019a60dd7d18191e82dc5214e4e2d721a448771a08913ee703987898f37b. 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/IEAAR1600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ce5921b4d3a6d0f8fbe595f3a403e21bfa7c660157a1298109c6f54dd46edf. 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/IEAAR1600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe769d066ee36b71d7b0c31c8f5e93f2963573935629d05574909254632da55cd. 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/IEAAR1600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c406dfe30fa955a6c69ad0fcc5e51d49f9022a3ef56cf703f16a12ed9db279. 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/IEAAR1600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fed9879fd80b9b9c7dac1cd76e3b629fb7897732ee914ace8728f29af0fc0c. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/GBLFP1657282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f20f1a613a97395a77e444c6cc30bbb364f11005578898149f91d2aa01c62c. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QMEZE1738135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3482f6e43cb1911890b507f3b5e5b8b29c1aea2d3a611775e3504bc9914f4d1b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/IEBOG1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e70115d58cb0536469bddb09369a9d5ade15b5c4434fa0d12bc598469a35dd5. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/IEBOG1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0136e93a72a0f07872cf77548a8df34d7131c1556031d0dc765acaf6203b1e1. 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/IEBOG1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29108ab155cd9533b17f597b5ae7c1f5ff0cf7abd82ce7f951f126aa8df6c508. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/IEBOG1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e70115d58cb0536469bddb09369a9d5ade15b5c4434fa0d12bc598469a35dd5. 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/IEBOG1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3482f6e43cb1911890b507f3b5e5b8b29c1aea2d3a611775e3504bc9914f4d1b. 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/IEBOG1800007.
Christmas Cookies / Greatest Gift Of All (2019)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f8c5679e1dc9541231ff0a2bd272d673d5589248ed557277aef8cc78272e37. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/IEBOG2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2760a88d7379c28184d0522b93150ffd13872b74eebbb37d33298bd0b8478c6e. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/IEBOG2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398194343680f43c5efb9ecf20527c9d62ddf0742ba784cef2f7ac4fd556c3f5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/IEBOG2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf490ee83309d648314c69d4523e7e3086a9d31a76a22f92e80d08d4a6957987e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/GBLFP2357827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d50565bf4042ed77cc7103b3b4c5508b4483a9310aad2a842d8e85eabb6993e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GB52E2502501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10aab2b8980a0ce5236cb74fa3d8a5ca1a2d25ec768e4f38e261fd8b158c016. 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/GB52E2502504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2b14e42db7adb5bffeffdbfe0bdcc0d956abcce9aab47c2b58edade0e4bd34. 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/GB52E2502505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6210f389fa89d20095aee4c00a2e1f677a93c1a3103b7ca5f5ba423e193a33. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/GB52E2502507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6801d7cb3c56aedaafd1917c79afa12143791ddd74b7b2c70c84e1eb67319a. 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/GB52E2502508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde82bdb2c2768b0b03d15b3d2f982be700170a73c4e2c20288f25c6e876e6159. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/GB52E2502510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d50565bf4042ed77cc7103b3b4c5508b4483a9310aad2a842d8e85eabb6993e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GB52E2502501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5ecf7cfabcaa23f143abf47562530da2ee5c296e760bbed9d428a84c261a69. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/TCAJX2573493.