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 0xeb9f44610afd3602964d11587f90adc37951c9ce5cd3747b2f88e2a58830abb5. 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/843bcfc3-db74-4102-bfd1-46127614952e.json and https://artists.proofprofile.net/proofs/artist/843bcfc3-db74-4102-bfd1-46127614952e.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 0x6d7da5342bb718a3474d609130acb2e49d69d638874798de2f2dea9d8220ea7a. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZK6N2275771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc583b3fc69adec398f9d03aac2d5b926562057a76a1418acad63946d13a9bff3. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZK6N2275772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d747734d0b342c206bfed4631c2e624275b4c218fe0c09808ec59eb315d8487. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZK6N2275774.
Sleep Better with Piano Melodies Part One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aab0d32dff3ab2097ffd4bd5887bc7fb2e23e1931432e42a3b2e90d56731ed. 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/QZK6N2275775.
Sleep Better with Piano Melodies Part Two
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccacb25bec7c2167b6d85f80cf34fc601f7036dd934292f0a8351103edf616c. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZK6N2275776.
Sleep Better with Piano Melodies Part Three
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5be69cecd454492cfe63d4d26fd7eacafedf52d13648c963f477e17196b51f. 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/QZK6N2275777.
Sleep Better with Piano Melodies Part Five
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6cbcca5642cf4fa8f2ec691dcb378b26e5023d05552f1b7a58fbc209967ead. 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/QZK6N2275779.
Sleep Better with Piano Melodies Part Seven
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03496743349f7c9b08f41ddff587d79890287e1a6a6b751c16e542695493039c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZK6N2275781.
Sleep Better with Piano Melodies Part Nine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b37674e07a211ee0ec4510bd4000f18c7d67487a4eae7031226f5e6f6886c1. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZK6N2275783.
Sleep Better with Piano Melodies Part Ten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b205c74a2c24edd21744cebdedfba16b2eee56f097b4187b5e3da98a090934b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZK6N2275784.
Soothing Piano Melodies for Sleep Part Four
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43114d17abe8e8f918bdff3c4c13d39e8c5117bb9a01849d72f6df4085c6bfa. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZK6N2275788.
Soothing Piano Melodies for Sleep Part Six
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bbb28603e97fcb9dd68183f954247290566105f5c30c386e10083e0c9f021e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZK6N2275790.
Soothing Piano Melodies for Sleep Part Seven
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e4d8d098b35876858fc0b79f99f3f8b1cf5c33caf1952aba0f286cf6c83b84. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZK6N2275791.
Soothing Piano Melodies for Sleep Part Nine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4578dabd8828d9c5a5e137b19324a7d05da69eef3e8777d1c7f0cf45a3a4daa. 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/QZK6N2275793.
Soothing Piano Melodies for Sleep Part Ten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525c0b7567eba28096a86dfd543473a8391bc97b72c97856f821a72e94a595d5. 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/QZK6N2275794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796e437ed5cef9e7c6ead9920fd185bf2c957634e049aebad21b7e0ec29f98f9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAGP2231456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b9f09481de1ddd5cd5969da7a92d94bd2ebd996f428c838dc9d71b1044aca4. 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/NL8RL2338037.