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 0xef633057ac413fd9fddd2d7d20d0fd811ded657d7593de15a6b5fe55942bdc5b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab7011a3-7132-4c3b-b5bf-5dc75c1479f5.json and https://artists.proofprofile.net/proofs/artist/ab7011a3-7132-4c3b-b5bf-5dc75c1479f5.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a527af6c2b62087e8dfebbe4a85d5806827fd1552f165513d462091aacdf67d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PLC062238901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fda1d857f39c43280c7f266af783fb2258c758cdebbd6d9e78ee860650ffca. 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/PLC062243888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0ccb3940fc11d76134fc3aec3e8ccfdef2a68ed7fbf72c4a5c8c6784390490. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PLC062249560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc7e5b8787a2f605d526c34ad71024b8e412240a62eed95adc30892811e8891. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PLC062366176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbe01bf53c399e8a1da1cc5d495463513b239ef0c4ff6ae52ae307f8713350d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLR862300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1564e789719f7fe0ed7211d00fe4963e6ff36f9d1018cdecba3b3d173d80c21c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/PLC062397880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394e01e15d0a69f5621739e87abcd67ae0caeae358e589730a172cff5cb5dab2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLC062408741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5cd7792b35e18080d81eb2a5b2b5c6c03b1b7509a4ebd9afb0ab390b9e1695. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/PLC062506669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bd5cb724977e906edf80d7d2e77b99a9ceb81f5a38c9c54b012d77c2a2ed0b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/PLC062531317.
GÓRALICKA POMPA ale to VIXA (Extended Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b85d75bb2c012979dfc7a5d165057b5cf6fed5bca1f0ab02a6bc0b2d850117a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PLC062554787.