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 0x159f42929454491536cecfa3cda67e2e2395198095667e8784544b6f170243aa. 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/0c210ac8-7fcc-44d6-898a-e38bc2ae6d42.json and https://artists.proofprofile.net/proofs/artist/0c210ac8-7fcc-44d6-898a-e38bc2ae6d42.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Música De Oro - Instrumental Flauta (Pan Pipes)
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 0x3a58863e3cafd5296201cca6ae0fe4a822f850f2d6c182e9297dfcf34011cce6. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USA560965784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dae4e7eeea5115164aa0311f800108f9dd8f55bfe5813bfc31f744a96bf5eb2. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:26:03Z), 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/USA560965787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32f8b4732515583c35645190efc844bf1f247e86af68ab83221539098b958a3. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USA560965788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dca8f187ceea78719a94100711f51a62dd3e5170ecc8f90df3ff758aab6942d. 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/USA560965789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb52fe3e0b695fc38941e6cf8df8fca4fea67341a15853113bc3ceba4a46585. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USA560965791.
Grandes Temas Con Flauta Interpretados Por Marc Ross
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca21ff87f78c49de726109a450586ba0dd098f7a2a0fdce295c756c3d900656. 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/USA371393712.