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 0x8361aaa213d4d489833f5934c5124a82bf3553d93e5d62ad69139e2bb196c390. 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/c215fac8-2cf0-4b9b-9049-963417bf2e15.json and https://artists.proofprofile.net/proofs/artist/c215fac8-2cf0-4b9b-9049-963417bf2e15.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 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 0xa7bedb6a7a25469f64f56e73333ca82d1c2d7803538aed721deaea9a3350200b. 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/AUXN22063420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b15d4c33f36e4f7fb1a1255d3d6c3fcfbbd06d2a80204b99f1cd7e17e994178. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/AUXN22100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7df26181676f90d600f0bacfab45aa4abbc08238dccac28cc46b1b9cc2c065e. 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/AUXN22105189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1d4955d0d139063822130c3a4b892f9573d755dbbe8dc00ddbe14e18d7da3a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/AUXN22105187.
Dolly Song (Ieva's Polka) [Nudisco Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6859da05811c355c7428f4baeea551793d1b869e30858deef9ba5b442d6febb1. 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/AUXN22106266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc0c166dae3e46b11c3bfe53c33e21c6c0cd9327bd6f66ffa3d4727eaa2e03e. 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/AUXN22122507.
Fletcher's Theme (Murder She Wrote - The Woman in Yellow) [Remixes]
Caracas / Concept of Scratch / Earthquake
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa394cd2782387faa5880799f61c43b0f717d19f71a919f401c570645e549cf7f. 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/AUXN22182901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8916cf54a9c11712f0a2ae78120ba1d91aed8f1c3c286221b32dd209a4533eaf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AUXN22182903.
Dolly Song (Ieva's Polka) - Carillon Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e74bef63d3060823cff2a86b72cedd325e1d323edf4cfa05fe6fb177c602da. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ITZB42138538.
Fletcher's Theme (Murder She Wrote - The Woman In Yellow)
In Ten City / It Just Won't Do / It's All Vain
Dolly Song (Ieva's Polka) [Club Remixes]
Dolly Song (Ieva's Polka) [James Black Pitch Remixes]
Dolly Song (Ieva's Polka) [Giacomo Bisciarri Ouverture]