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 0x8e2cc3fd28700b9571e649709add8d7967dbb88b9bba6e8630a52a5838030a46. 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/c01ab181-2735-4a4d-add8-db4faac81586.json and https://artists.proofprofile.net/proofs/artist/c01ab181-2735-4a4d-add8-db4faac81586.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 0x067319a9119be7a4ab6167afaab06f32211d0ab0586b81437a1fe87b25943c66. 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/DGA062472065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9440b88883563f1e722c2b587d5cc37c8e36a79f6d46654ef00aa2d91b44c3b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA072428356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b97984a08a825dfba0e8de0cf312be4e3cc98cb5991e5b2050ceb8b7df4cf8. 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/DGA072468131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867bf70427468feb030f7dd2ad56cabd481154ee7df5bbb71299cca2204e895a. 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/DGA072468132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d5b6d74d7259de9df537bd3ff183d5e22e1630523b6207dcde63d9c43da8bc. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:18Z), 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/DGA072468133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7f3786949144686c9aaba7c1b80039ae463d53f95b9ccb08e556f8959eb790. 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/DGA072468134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702c7c7f10e1549a639bb247274bc071afe199251bbaf8d66383393edcf9f9eb. 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/DGA072468136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f6fe90f0772a89c27905952e1b33da7517b5c9003ee01a779c2737643c00fd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DGA072468138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9440b88883563f1e722c2b587d5cc37c8e36a79f6d46654ef00aa2d91b44c3b. 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/DGA072428356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4c6de1bd47e04597408c8db33bf10d721a5e5b163a966253fa7a50ee2901e3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DGA072468140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7692c02fc4aa0054e3801186a146fed2fb816b4d3c76c6012a45913b77f1c349. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T22:58:05Z), 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/DGA072468143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dff8ab6777b1ef3142da5a0fdd7157de1222674f0a870a16ba1b7f20cf3dcf4. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USA2P2546499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d4b8992c36e82c2da816e9b24bf1d7589103da2b22e721f9091fc6bad10e98. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA092432232.