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 0xffc8148ad2f54871f9fdcdbca18dce5dbdc40a349af55e275a528aa7313c4f93. 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/8f574ee4-91f7-4f6b-ae65-b31da8cfa1e6.json and https://artists.proofprofile.net/proofs/artist/8f574ee4-91f7-4f6b-ae65-b31da8cfa1e6.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 0xfa077f9c608420d0d2c907520fa1c949b645be5fbd8eec4b78c6468b0b6455c6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:52:22Z), 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/FR59R1623595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12590e83cf0971e61bb90cb3506589f50ce60930f8eb7f0860e356100660395. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/FR59R1623596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa256d757ffb429b17fd405565ef53c5849e19ede8447aa21c6e50a5757f1c83b. 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/FR59R1623598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670234bb9563ece43c41dbf1f53b36ad82f3406052ebfee800fc9c3dda83ecdd. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FR59R1623571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a185d9dafea10ab3aff3dc98e6b6a3cfb0b3b8392ea2672e2ca0cc2b7a9ac0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR59R1623585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb57468a476793505e9f816474139c30eb07b7d8e59929d95f52bc883ac4964. 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/FR59R1623588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1c49c3a070e95d2d3a2020fde37c40cd00aed4335b534aa2baaed7d254f021. 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/FR59R1623591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5d2a794b9578c92eced73d4808b175036f745acb928f052e947d1915664298. 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/FR96X1642427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186f6930afa59526f7cad6c0cd633bedfee3e96e2c5ba19889f1d74ca38be281. 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/FR2X41713809.
Z-Pam (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabb74dcb74c68dfce5f98761a63ca287c01a827c0e40e44b635f8ce324a3d08. 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/FR10S1805412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b344b0a248ae1ca7480ac226aaaccf93fe8bb370b6987d4ceea24f0f2f7172. 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/FR10S1805417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888da2cb1c8c429143b5006665475c94c6eb6a898cca1f990a1cf934bdadac68. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR2X42039056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c85cc835719168720ff79accb005a92e2554c9a5e0eaaded0eadf9d3cf4bdb. 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/FR2X42039067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc0c50dd71d0c3a1eb773477f4981d084a4780b9754def24ff6684d861c3eb5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:05Z), 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/DGA0L2366550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc406393a008d10446f8138d66c0bd845a960a9dd9c1ef4979dfb90a36ff9110d. 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/DGA0L2366560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8694ea62d61ba2376730efcf6445dec72555d3c990c6e2e69991463bb46b586. 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/DGA0L2366562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65a5ceedb513dd09e1c0aaa7299702d4587eb50c8952e12462a46675044f371. 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/DGA0L2366564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4271fac3300cc5f9c6141645e4927900c7aeace6aa141c6110e78bdb4ab880. 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/TCADO1882093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4271fac3300cc5f9c6141645e4927900c7aeace6aa141c6110e78bdb4ab880. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/TCADO1882093.