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 0xb13bcad7e2ba548e332367ab4e87f2af936ffb37e00c57caf5881e5aed9bd59b. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b62b0886-0b02-4c4d-97e5-2ea5e48eddf6.json and https://artists.proofprofile.net/proofs/artist/b62b0886-0b02-4c4d-97e5-2ea5e48eddf6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le Seduzioni (Original Motion Picture Soundtrack)
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 0x66ae156576bca0de02dff4ffd6efff8e3379b41f731cd6c440209e6e0a43a94e. 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/IT9UH2113001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06fd798533917ba41383a61725cd95331cd2d42a3c2eb34d5f25829ac396434. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IT9UH2113002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3feebb670714df255213b4043912f5412cb0fcb74d5c3d6b662d5576431019. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IT9UH2113004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb23cc3c677602e403d42f533569a2f578bdfe364c619816ccd92127da7b820a. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/IT9UH2113007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83767467dbe858578c96d94d70f061f47375870c73a89caeb2f12919b0dc7c0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IT9UH2113012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3997f7e1cfb5f97121b761f1feb4278bcf773df0027857fa5aef71a1947f21da. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/IT9UH2113018.
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 0x482ebc70c02a45f5cb799fc621ec03ca8d92a7374474e2c2aff5271a0c0d5cef. 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/ITPDM2300137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b9c10bc1ede713ad59aab7ba785436c9135598accce1de2596ab37ffed1e83. 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/ITPDM2300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c977b87efc6cb05d71916ad588586eed76a712a53ddd273ed3499e9ed46b05c. 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/ITDT51500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae3d48117353526a16dccac1e26f3187adb81b5ec51f8256573b692b44c7e71. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITC041100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2711b93bf46b6425f2ae2c5facb51744614ac84b2af817c0e6b6a556ca2d3f88. 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/ITC041100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae1fd2319e1151795b251cbfcb7449027f8fb623a3813d8fb8cc35fbdead366. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ITC041100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faf4982c284fbde9384202937bc994329a3bc0d7a14c8e75e9f2f3e2c914e20. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ITC041100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2dc35127638de61557e3f060179a6c132ed25b32aaeaad194152ed096b2959. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/ITC041100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b933bf7c8d613daab4173da056c38c13136d6e2fcca580fa7fb6cbf1bc079cb. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ITC041100009.