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 0x78640061839095941305459c8d872457059d7c1627ca4dbbac89b87a96620f1a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/528916f0-abdd-4048-9537-345fff4df06b.json and https://artists.proofprofile.net/proofs/artist/528916f0-abdd-4048-9537-345fff4df06b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Snowdrop (Original Television 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 0x30e6a7b4dbd8f7ed42f6a9370f6a68bc20400b2b03ac7f7909c6a0b09107ad71. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRF702200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca10b98aecc4d8df1381b472a17536106bd9e9fd6ae602b6ae2a2f7ffd2c8669. 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/KRF702200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60397f22ee529c61a1506b6a0a4b97f5edb49ae4c10c757793c11a9e8e626d2c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRF702200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8643f57f88e692293576bd291ba3ef9d54d4f497d1fcd16aecd9deb2f08a7afd. 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/KSA002300835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa84c1380edb746e853c09339e870fee50de1874b5a2fe8c0cda9267fefb77f. 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/KSA002300836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d74358ec67e5cd17cf7921c8955052ce159b8c6d7e208195a4f4b3130240f2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:45:22Z), 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/KSA002300840.
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 0x2799bfbe01e06ce3fb5273c203f58c91dec29288a9af8b9da60ecaaf7c4baed5. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/KRF702200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb596efb4894711ff1659d242fb28ab44443df9698d71f17b3cdeec397cfefde4. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/KSA002300827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf631778d970e5bdadfa9bd163b6fb1edbf24864358159d30350d7f7858790a94. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/KSA002300828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d2be75637b8aa4dc439f1d1b8e75a27f3597effdf1e55a7e602602d8b535c6. 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/KSA002300829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd8c78a9ec0a98eb3ed9922975403d2c1207f530249f30db6b79efc1bc63ad5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/KSA002300830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07d90140e5c7b43a08e72908dae44bdc393ba0e1e0ca6d9b7482104308cce63. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/KSA002300831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f83692b8098be0b776dc87c71752c312138df311bc955ea059e59706f701e5c. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/KSA002300832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3053d5c05a7c19c0d4283010dd8a5c3b8d34c6dc17fd4e16cd3b0486ae7ba328. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/KSA002300833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e2f060a6afb8788ef41b3afd09d5a2f125d878116db58ce69d24ddd3c4a215. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/KSA002300834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc000d861b7d7015982723797929b741a51ea2a96844939df76d8c066c2133138. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/KSA002300838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf247df63d02c43a425b219658a72f3326f1a4524687fde69ca41f094d03d8454. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/KSA002300839.