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 0x4bd385fe3570ffe25e1c76b0e988c308c57fc1898dcbc1ec96c9f33aafaffb51. 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/8883fceb-6ab7-492f-91c1-79c6c9747629.json and https://artists.proofprofile.net/proofs/artist/8883fceb-6ab7-492f-91c1-79c6c9747629.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 0x2f65843d8b5a07bd2d32e308d37509b39ba0bdc05eef308edd44e632678ed33e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTAW2448554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1f1ce5d8e3ff566218a4418204a6d41426d9733d65246db7ec691af0e8670a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTB62419541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b44e8d30673d2788bbf5ecb93e69980cf7a08035066e3dcbb0e1feaef21a0a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB72471977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e1886abef6f722d7ef5d7e6334957e3b0f30d4477883893fa79585d62fb823. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZTB82471868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbace7aa52f813ead9bbf33249f180ea11d466a5e77b532e311c89689e95f22. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZTB82471869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8ed8aaba938f2d8f497b65f14ee940e2951afaf183e00978e84b4e76a3aef2. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZTB92482473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fc968a49ec432c1a61719aad0fcd3bd33a54741b46e29ea8be704ae111aa52. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZTB92482474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17a6b51d359be7925180d6700c1369c65ef2447b821a249a58f296f87cb167f. 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/QZTB92482475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0229e56b2fb0d0af27fe64ddac24b0b0a0d786c1781b9d020a1475471af9d96c. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:38Z), 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/QZTB92482476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc827efbbc03cb106aef79f531e6f59502f3dde612795c2ee5e5765de318cfeb9. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:02:54Z), 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/QZTBC2445712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0667d908a6c6c2a655bc2325a0450ff53c47188a100f333e260a37ebb0c1bb. 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/QZTBF2488282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9702fc9d92ad1bcf76da5abb1481d4c16c5ebf65d92018a53f19a4bdd6d7bf9. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:33:37Z), 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/QZTBF2488283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b51eb2a0513ebcffa99387b30623f9747f6d386979f18593ecbfe87811d4b15. 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/QZTBF2488285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854277cde5fb91e796f189697ea2960ced8edf38055ee5a47e144f112df5594f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZTBF2488289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd169e3693583274255ae1426897a73969bee5a150b441620cdb254c148051b90. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFE2422022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1a0e25813062b713940ec37491ba12ee0a5c851b6a414de5dbf6ed8a9360d8. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZWFE2422023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f6c040310372dd4cc454ad90dc0612db5764e0b208da222fb3f05452fc4eba. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/QZWFE2422025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d9d1852638fb8ccb1e99f9c914b4ffc026f7d9c2f0d92a6eebb348fb2cc99f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZWFE2422026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b229ca1840106ec3ba5cfb48a5519eac138cf7652997055da791267ca7a806e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZWFG2428225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2603139431b4fa23760ffa87d92cae6772d5e9204d398477c96c6d253126de. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZWFG2428226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c29158ab931ab7b19565f31d6d931a6d5ff35b81d557d0183bb328a9deab34f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:32:07Z), 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/QZWFG2428227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d6aadc0ac74f28e746d0e97d190b4e08ca2204474c1a41f46f15ac3d0623c5. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZWFG2428228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0f3c191a3eb02b8735a83fa37ecd61c66b6c2b5916bacb16cfbbc98604a6c0. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZWFG2428229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28608cfbd7cda4c2da49a660af25aee37f59496ea608d9c72fa227b342728ac9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:30:44Z), 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/QZWFG2428231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ac4ecbf9d4ba8e77237e9211f38f05541c1363c42e69d0726f977d4d692f0c. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:22:35Z), 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/QT3F32536622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc213b37d283b20586afe7f10e9fac1614bef9bf963955005fcc7a8f5e9e634c7. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QT3F32536623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188e0ee2a740b0a342101ed4d16902592b6c3b392f0107d40f6e3f194ce8ee81. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QT3F32536624.