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 0x372fe4e74ac21890bcfc950adc2a88d64d42f3cdffe8c23a08ea7026827a234f. 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/d6c46fec-aaa7-4219-bfcc-e6413ede4e77.json and https://artists.proofprofile.net/proofs/artist/d6c46fec-aaa7-4219-bfcc-e6413ede4e77.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 0xb10b57d080f9bbf5fe5e29ec00a95c3df1c41cc2c938d4a5c5787dbb28f84ff2. 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/FRUM71800651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42b51ddbff14c4b6d0952548eb888561f66322c22c7e58e2d02556d37e616e8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR6F32102690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49015f67f21dbcf14fc5955bed3a4be1a621c5b32e5074c4274a38a95515ca2b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR6F32201230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0e1cac14feb5d803ca3824ba4cb79a29003e4a2c263ff8326a6b07362911aa. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FR6F32201240.
Just a Wave (From the Original Motion Picture Soundtrack VESPER)
Small (From the Documentary One Year on Mars)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34766ac2c838949176fddb15d49e24c1f5c44f9dcd2ed4a3e412bac59ac0bb84. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FR6F32203220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7b9e84e712a232000404751a907dba50bbe2cd926ed0e86f4336cfef0f1f8f. 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/FR6F32302640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cfabcd474139d131272775e88398496dbd303e20d970f267682459c61323d9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR6F32400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec09c9d71a4316c10c0c6b737ed21173574d236471f9fa06ca39193c2786b89. 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/FR6F32405700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846e34a7f072d96934e0eb81bac9c64b83ad563afb7bc631dc746e54b53b1479. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FR6F32302180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a74045d88fa0b169d25bef2ae61bb79fb054a865148b031d2028060753870b. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/FR6F32500520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682eef2b52c8b9e2aa9ce661c1da3b6f03364fe5dace65e6f506b30d44e52282. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR6F32301460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ef102182eb4e6e0243a26e9d0b1be6660016085f360b83002a302e7ea9dd1b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FR6F32500550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1364dd90f0d9ec67903648c738722a7a3c5ec30ce9c03dca4133b2c4f9828699. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR6F32500540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa98c75fcafba458d6461afebfacd0eb6c47e212a964e5e3faf75d9095fb6020. 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/DEBE72400252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc441a904f6acdbd3f16066f323bec439c597479e457e9297fd4d3adadbdba7fb. 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/FR9W12432376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc441a904f6acdbd3f16066f323bec439c597479e457e9297fd4d3adadbdba7fb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR9W12432376.