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 0x84d543da49101edda0433033955529c10fef080fac74b56bea8704aff01ddb40. 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/38f05541-1e73-4e25-a48f-abeb9ff1f637.json and https://artists.proofprofile.net/proofs/artist/38f05541-1e73-4e25-a48f-abeb9ff1f637.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 0xbf2d860bd36e3f5c7bb27b5ea00c70b7a385bfe88c993b958e8e913a0c10df74. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PLC062529591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571684124abe36403adc97d9a0af32474a507d21c5a7be26fdee08bc1a1b2a9b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/PLC062529592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7157d8289766dc7f1a48047b5f733d05af0e8c1aaab9b2340756822c0284147. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:35Z), 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/PLC062529593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb6db9241aecbb099a35309809e022fe03fd759518eb03a98cf359b4c752c3f. 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/PLC062529594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf124e4b442c9b918c03cbcf93b5ffa9f4b63aaae49419f5515bb74cb87ebc7fc. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:20:50Z), 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/PLC062529595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda7f8e731582a9a538eb48ee60d96d3bd67b884660dcf23f2d5d149ecffff5e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PLC062529596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b17c1fff6aa37475570ef08d4c148ad2aba94e09525464aa94b31694cd8a5b7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PLC062529597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5109ae3c9813e118940ed917924367dcdf6905320d8500cb511d1bb9b7687c98. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PLC062529598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02130e973a25850f024355aa75dc67784f92ef530b26f9a72b80dd02b55ff835. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:32Z), 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/PLC062529599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd27d3422cdc8864805e1ff3fec1438d0a8928ba28586155bfd9a14a3d40a09b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/PLC062529600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c55e29119eea6efb1b4e457b3126b59d5d81e986cbb8e878f3c8a2fc7e1e4c9. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:24Z), 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/PLC062529601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2de00b1361ce3051998a3d43c3272f6346cef879e0e376001c20bc1730f4d8. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:26Z), 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/PLC062529602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36968767528dcd752d0c79620b706270bdb1954f1a9945f96932838cb50a0aa. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PLC062529603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8889f05bc169c5f94a00247f16a89b203f906dd9267d6933367c3f92c4d7bf99. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PLC062529604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08df9aa71c4630f522cee342844d5ef08b7c863b516f1af15b1b7fece2960e63. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PLC062529605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c56f08383ed856f4278292a6644f1ca79ba11c9c8687cb19089c81d4abc504. 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/PLC062529606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa600e2f9a197711b251f387424e829e1d7827ba0e9e890bf050544a5d96fa3ea. 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/PLC062529607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d55d77021b104e8a05a477aab43bb4673659fb93fbe3843dbdc0fdc37f4feaf. 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/PLC062529608.