1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x0661e30cde237a1ff89409f46a67b11df1ddba32f9badcb4d7f9c24cafb3a94c. 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/ba1c1702-e6c4-4fe9-8a16-c4de6e17667a.json and https://artists.proofprofile.net/proofs/artist/ba1c1702-e6c4-4fe9-8a16-c4de6e17667a.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 → block OTSBitcoinBlock must exist at that height 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 0x4e22e0802ce1de3b66a94a0b67ceeb96edcd7fba2354908ed5e6b084a4091cea. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTAY2434538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb161965616060cc085450d18f4ba133fbccee6592b4a38b20ef4d03c6d89e832. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTB72363508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0e8d7550091f8f62776b61205e95b641ad7be9bbc0927dc808c0fdc343701e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7T2440861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf287a96da9339623cf51811312427c2695fe277a53c956258df1499e30c02e0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT3EZ2486328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f01482f75557aa65cfe019893487246a6038fe300cdc82b919f758a1954e44. 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/QT3EZ2486329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bd9addeba7bc1e2da13a85fbc314d93bfc0f36010b964b48b48f22a4db1464. 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/QZHNA2502709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4719f8f0e89f2789f6d941c0d2eac9fed565367d6de3af9864593094e055d0c9. 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/QZHNC2528259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f8a82f5feef885d84fb11674ebfbca289fd6ed0e4797b485eab9bf2fc6bb45. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZK6L2546779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a972d993a051db7830937eacaafcdf9c584f38b68d3141dc6b0e5d1b804b71. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:49:41Z), 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/QZNWT2543615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35c2dcb4353bbd9b769cb0c5cd4c24d87c87faddc1c43e11430283c5a92b7c2. 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/QZNWX2564817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac64309fb6bce0d36e3631054dcd9b8871e52221e4df37ea815f9008772f3757. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:14Z), 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/QZNWX2564818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1764f768cc0b54ba07769cc4e61bab5d0c77211eb528a40d555dfae5c95095c4. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:30:39Z), 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/QZNWX2564822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690d30610ded5cb21c98245ec970ce9a238bed5e2fc8a3b4c88381210c1f7641. 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/QZTAT2525975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d89f86d45fba1cbb3c5550f00dcc1535ec88ffd967b40140fd00e7d7b1d2a0. 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/QZTB62513436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df90610a0237a21111dd403439a573f75edb7a4e4914d3ac7dca2ae2ea9bf75. 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/QZTB82508106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef26e4e9ef5aae067bbfa753260ed0895fc98450e419db5029ea58241ee247c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTB82508107.