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 0x96f70c3494a7311880f562ab401060572ae7085c485fcfaccf7bcb995786987b. 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/c67f1daf-066b-4a32-9144-bd2c8ae58f98.json and https://artists.proofprofile.net/proofs/artist/c67f1daf-066b-4a32-9144-bd2c8ae58f98.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Northic Ground (Incl. Renato Xtrova Remix)
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 0x978e5ca5252a9481687aa71d1ad25dd0244040099f2c7f25cc4107595490e415. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/DEZ651709706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dd12899b1a1a7dece96f142daef5f735d12e6b8098731e3889e020e4b4e01e. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DEH742007362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9d8ab1d6a0fac857d296b0f803c9a79f8888a98148115d6ba17be95ba5364e. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DEH742030381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68bff71535d1acbc7a8f4bb23a3cf727410e37f0d34938e8e89f43451475200. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/DEH742043241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551bb1b48741861d4f9f707e0565fdc3c7ab3c7c758b99213e244b37b9edea22. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/GBLFP2111401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b845edb33f020118cd241afb9dbdb3e5a60291e2bd1d3cd4cdb4f7b5f4e132. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GBLFP2152655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7913bdfb3fdbd1008144dc73a75495aeb39b9485a897a555bd8b5cb29778877. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:09Z), 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/QM6MZ2216395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd244f16930bca15110e1d52d139c175c7f3e5888fda29bb794adaadb29c0677. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6MZ2216396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44da549463f6629725cbe655511e77256aa61653863aa22fc5d1a1e43f38fb2a. 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/QM6N22235102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bad9f8d7c0ed81ed89698b222779af0cf39935a31c6b2c033d5a2dd779031d9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6N22235103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ffe752bf4b4bc3a436251d6eff478a8afeb568b097b768ba1d9de1e26386bb. 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/QM6N22235104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e6aa8fa47462e90ac9be8d6bb78773d6d9345d0256273e3df3c57407add403. 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/QM6N22235138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24929cad90ca29be9ece3f9925aeb8d8a39efcbb768e58531485591d97d45abe. 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/QM6N22235107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ce454a2eb5ee58c5b42709748f931569510691b0a6b0e61737a23b93ad9bfe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6N22235108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457ba2f5fc07299f36584d23b83fcdb93139e8e6a7ce3e94ef5a0f073cd00e10. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QM6N22235109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7743ce3246f4d955da9cb29961a4fe2283fb2100ac2db67de7f2ec3273c6c8. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QM6N22235106.
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 0xe7bead47b0a63ba84765e3aefbe7c453a121a666c79c01f300aea00795475665. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:31:04Z), 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/QMDA62261599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12eb247781a193864993b469521b24812dced9605c5a9267e4274a47000870bf. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/QMBZ92351824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3e413e77a7f8873e407851efe506ddb5cd66b3f2ca731ee35a462a47c26f44. 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/QMFME2374614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeda36b29ce7a2b36417f7f9e760284881747a03e332943cfe657d55511f00ac. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/QMFME2374621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f54cf94eb0b93c3921a5ee5058f020cb2da857acee8f6ef5a0dc4542d6d3a5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:51:19Z), 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/PT1GK2500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dcfdf60fb15cfac538cf9199fc6735611e2179ef005a9246d502f76ded8889. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/PT1GK2500035.