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 0x4eb2a618654b3e41bb8b45a410fd43595e1c342733bd93b389f8d2aac6c23c4b. 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/8374c526-4eed-4574-8c26-e51c1e90273b.json and https://artists.proofprofile.net/proofs/artist/8374c526-4eed-4574-8c26-e51c1e90273b.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 0x1a12f76edeee6b6d61ddb314e7732dceae3108812e6b0dbecf99104853d8050a. 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/KRB471430002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7521800d5d448bc17c3fde23632e0dd70989f02ad3baf98ea44b5b453f7f11e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/KRB471430014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8eea664a0ceb2749b8765e229cd334bf8cf5d57c5f3d095b252e72938362972. 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/KRB471430031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31bdb194eefe2969e01523c24b5dca77fd3530626dcb584d1f649b9625ef579e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRB471430048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a26ff69f7247f64a8d2d13be6dff13b861eab64088f38588402287fa59ad92e. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/KRB471430070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe904635015bfc9ccc751f03d9795f5c8272c7aedec540533bfbff5261cc7be. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/KRB471430074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8314b51f56d248dd53e4ae9fc81b203da21f596b22baf56d7cfaa342a4403c31. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/KRB471430085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54a83e84ac102839c1362d71116ddf17a8b1041011e7f0296193b43beeb56a0. 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/KRB471430117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2581b142948081a5aff8b11212c03cc6dbea72e0b43b495b9bddb7b60fcc8e85. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/KRB471430122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43b6168b4b7afec62f1c95fadd3cb28a0176f54f6783aeaaf9b36a0f4504b68. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/KRB471430132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41708a7c2acb762e749b53a552fc10410c546ed16a6ef4df7a2fa3222075892b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/KRB471430133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f73e66d06fe7c93b78295dab8e4e6964469ea7b9fd331fd29adea0e713577b. 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/KRB471430135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafeda1a9a9c9087e4fb6d04e10f67c48f5ef659f0402a3a646cb5c71c3c44652. 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/KRB471430136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcb52dd7658d27df9ccdf61b3f8116b419e90d149c8220d4253676f5bde46f0. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRB471430150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c7f6f8b4078b931cb48778ac1ec818a5f5c3fc40d853dea4210d8bc833c853. 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/KRB471430183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3f5ffb13d115e8603dad4c3536efe3006dd2665e698a423ed7d8464a583a64. 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/KRB471430203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f18050ae3b953bb036df29368c689f964f25eef4a82bd2ba0f8e83d4f589714. 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/KRB471430187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe472fafacc21a4f3a1d6cb49af098435eb67ef5bb7bf8ea9259c0a5c606a9089. 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/KRB471430188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a8bd876ce951a774086b52e89cff5cad674e56197d6c46a45f2b4f6b869336. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/KRB471430206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf983e33c0a276fb904e2f74665a2afc2bfcf8d0dac8b4c906ef8ac4d2d89ca97. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/KRB471430189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9b5069b0586fc125af8998c4021a56f099a20fe37aa22229f7e0b1df396e41. 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/KRB471430190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe2783128d9fa9de48f8a428270f409b6faaec60b41b4774e88d70e507c613c. 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/KRB471430191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d50a364a851c18698135cabd256b6211eca60dfed58dd3de48ce0779d1996df. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:23:24Z), 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/KRB471430213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110bd134ea41b0321dbdcc4ae58f84ce205e5161baef6a0aef2d6d235d36e767. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:55:40Z), 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/KRB471430196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cd88274b01061d51225a4b80562de8d8be8d97e76a9a71169fb53efd61efe5. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/KRB472200809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d3abc80a7316e49bb611ad06c4cdd7acdfc4730013a912bb05a8c48d0aece7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRB472200813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb394b1d12ce46225f1de36268cad568c7bfdd49116d75358302e5142d05c1b37. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/KRB471600240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf996ba22749e405e91e2b7c0a24222e07eacb930d386f43fbfb5bc106bbbddec. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/KRB471600244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fb6e14fded92d25ad882793a97769165d5035b69097393516134dba8f489ee. 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/KRB471600245.