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 0x06fbf745c2a0ae287a32beebcc51a13b68e8423bfb1aaef2318f6d33cbc6abd0. 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/25151779-9b52-4882-aca0-f1c4553fca81.json and https://artists.proofprofile.net/proofs/artist/25151779-9b52-4882-aca0-f1c4553fca81.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 0x6a3ab844885dfa350eb8e759116f4f0f865cd3d4eae594cedde562fad94fe267. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USA2P1888894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7ae073693f5790213e49330cd25712941b58b210698bcdf8ab923283c336a3. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USA2P1921413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcde2d1c450d02e02820adc0ff4a51cd016c010967b756d26be5a16056477cd6. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DEG932103877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dfbe6bc4dbb83eed9ff7e70a9277590939824ae01b070c0ebe9d2ec55384c7. 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/DEG932103875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2732889f749a9ad75d2ee3f2ab26d150de735d6c3a7d9782941577f070fa93b5. 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/DEG932103874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d319b96203a9dffc4847f311f80c7283c357210c28ff5489b93b2ca7edae6a2. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/DEG932103873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25d29d52474403b5fa3f03a16e5eab79c790664e4844443ae4262da51ba80aa. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEG932103871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38271817c736c21823601db7fd586d5fea5fda1d1eabc35b55eb8914be4db326. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/DEG932103870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8a0807020843724c8f10cb86f532b5e53e1aea72c5df845f3bc77b9fd44921. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEG932301694.
Didn't Cha Know / Gone Baby Don't Be Long (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3547e336b33052005cdd5bebf9717f5aa57f960699d4b072e3ad80ad276d31. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/DEG932303184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162385dac6bfc0f3fb2341fff59c1dce0b4ada774494fc3b014de24924b8624c. 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/DEG932303185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0815f470fb41d83e621b4aa4ef0933f65e60a3a01c0977ff3bef97f55d49b856. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/DEG932403807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bb25e994d0a3c1b3858eba7f3ecfe243c24382ef53b3b8a52035fddad5ddec. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEG932403401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0886193f324392d80aa9c5c93bfacff6d8e9571e0f7f8201189616067cbe0743. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/DEG932500199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94446188f3c1bc763ac13c6405df62e081f3c98d4308fe621a18107b6396deba. 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/DEG932500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d39eeb110cd71bd812e75a46483017b9701265a9bb581a36acca8610c5a44da. 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/DEG932500191.
10 Years of Rhythm Section International
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e89141e92e08fed4a83febe9dcb1f4a5c2939e9c007cd468f3fbb1c78472f1. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEG932404248.