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 0x76ca5969b7c928719515d5e7348e9461c4d122a5b5d30d593a4a2b3902ca4be4. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/289b3223-f662-4386-a21a-fe9131f9c671.json and https://artists.proofprofile.net/proofs/artist/289b3223-f662-4386-a21a-fe9131f9c671.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Simon Boccanegra / Prologue: Preludio. "Che dicesti?"
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 0x8d434023ded14ddfb31cbf20370a57faaa90df1cfcc1cf8eaa935558b3e9fe8f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBF071340401.
Simon Boccanegra / Prologue: "L'altra magion vedete?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ad45863615375aabd87b7577b16b4efc97c644aef578d52851129975977b47. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBF071340402.
Simon Boccanegra / Prologue: "Oh, de'Fieschi implacata, orrida razza"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e21eea9569b8956a5f44b531eaddcdf3094d8f002340ad5c8c3511c8a6061a. 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/GBF071340405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6dec9d8cee5533b04f6271fa2bcb9f689ded35c4865f265cc4584212238fdd. 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/GBF071340406.
Simon Boccanegra / Act 1: "Cielo di stelle orbato"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb49915189baa697e559213dddef481e90a465e285af459511f851c4c47d8c62. 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/GBF071340408.
Simon Boccanegra / Act 1: "Che rispose?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27c4614ee24e0f4246776d002642709a796e024ec6bdafd7402410162ece512. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBF071340412.
Simon Boccanegra / Act 1: "Messeri, il re di Tartaria vi porge"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c1459c93b4658d61afea5139419830022c9492711d6c076f7211c973999302. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBF071340413.
Simon Boccanegra / Act 1: "Amelia, di come fosti rapita"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ca628073851f1857296fe82be2a883ef312ec6dcd6a837d45d7bf356379aba. 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/GBF071340415.
Simon Boccanegra / Act 1: "Plebe! Patrizi! Popolo!..."Piango su voi"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b89464b904d2967ac67d7c92c5f083109e66b68dd37302d9a9d363c21464c76. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBF071340416.
Simon Boccanegra / Act 2: "Quei due vedesti?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef841c583cd18c866f9dabb00d01434b0a25e5bd2ad32ffdab1ff676ca70f2b. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBF071340418.