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 0xf653529ee3f2852114a49f36c0e4f00637b5d0ee7de83b9eb4620d3ef586c458. 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/50c14e39-4c6c-4d4e-8c08-3961968d5321.json and https://artists.proofprofile.net/proofs/artist/50c14e39-4c6c-4d4e-8c08-3961968d5321.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Schöne und das Biest (Deutscher Original Film-Soundtrack/Deluxe Edition)
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 0x75a5b370fb687eaf9c508ffd651b1209615b0cf75fc9dd28b436c7b9f9ecc47e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWD11779082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd8cdb8195baac5bbc80498529807a940aa54d9eb781a7ec329537aa2129eca. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWD11779085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13f31ccfa5d8519eb4d9ddce7fe85017ff1f77c802f4074ef1ef82a40ba84d8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWD11779086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b2b80cd806649afe8cc223fa0e2692f23d2baef8b4dff9fcab48759d677186. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USWD11779092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c6229bc40307f22b73d460d064cbb50805007b7ca1ea9834292fe7443d0c54. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USWD11779093.
Die Schöne und das Biest (Deutscher Original Film-Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a5b370fb687eaf9c508ffd651b1209615b0cf75fc9dd28b436c7b9f9ecc47e. 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/USWD11779082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd8cdb8195baac5bbc80498529807a940aa54d9eb781a7ec329537aa2129eca. 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/USWD11779085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13f31ccfa5d8519eb4d9ddce7fe85017ff1f77c802f4074ef1ef82a40ba84d8. 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/USWD11779086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b2b80cd806649afe8cc223fa0e2692f23d2baef8b4dff9fcab48759d677186. 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/USWD11779092.