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 0x75ffa93d12239bb92af8a7e87f617fa347796fba49563c483e05ca2166e13740. 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/bbb89b04-4a40-45f1-bce4-9526f65ba8a7.json and https://artists.proofprofile.net/proofs/artist/bbb89b04-4a40-45f1-bce4-9526f65ba8a7.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 0xa7040f0cf89bf30e5bb3f75bf199443ecde4c2a6f1a301674d87eb41d96c244a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:51:31Z), 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/TCJPF1760654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4f7b8926430d00ece83699d71d54fa52771f1b5ab79b037bf03110d0ad9aeb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPF1760641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37697263e62a571c4e9d70b5943297e9b0f4a8082c73ee5e314f48e2272fef0e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCJPF1760643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe53f594a691e170fc3c3549640f3541ead379bf92abfc45ca1b2e44c59180a2. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/TCJPG1846361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554095bb8bc7535ede31c952e6c1e664505f9766858f923bf6c38a7f4c73fdc5. 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/TCJPG1846363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbbe7fed9562c339897d150c6cb6b7020364b57eb34e1d694e89465f9b4581d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCJPH1800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e49ee5a51b676f6ea77c6dcf37a3cd2d34dc608c85a950aa2673dd4a26f2a1. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCJPH1800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbbe7fed9562c339897d150c6cb6b7020364b57eb34e1d694e89465f9b4581d. 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/TCJPH1800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bc5ca553cd962f341de9117d35c31251296f0da9414a8b8f710343f1b18a3c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCJPI1807854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4362935beb8371104c3196a6350a789c286a2d419dd31c2d58ea1a414cb1eb67. 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/TCJPI1807855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34db4bcd30f499595f7c6f8afa6c63ae43e5e0d8befbfc88acc4ac8819b669a. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:57:24Z), 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/TCJPI1807858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bc5ca553cd962f341de9117d35c31251296f0da9414a8b8f710343f1b18a3c. 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/TCJPI1807854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4362935beb8371104c3196a6350a789c286a2d419dd31c2d58ea1a414cb1eb67. 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/TCJPI1807855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84160d85f3d2f69fabcf7e45626cf2959dc099b67f139f272fcdd1aca2ccc163. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCJPL2008493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b0cf5c28e7cfe0974f64a32aa27d4a96388cf3293bbd93f16b7eed442f1d5c. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:23:45Z), 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/TCJPL2008494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b0cf5c28e7cfe0974f64a32aa27d4a96388cf3293bbd93f16b7eed442f1d5c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:04:57Z), 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/TCJPL2008494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc6663c512268dc7550a150db1e8c8baf2e55b2a9f248416abfd6aea4a3c098. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:44:47Z), 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/TCJPL2062300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc6663c512268dc7550a150db1e8c8baf2e55b2a9f248416abfd6aea4a3c098. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:30:32Z), 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/TCJPL2062300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ea8b1295e893dccc3b65657b10c193500b0ac23d154a1b23c78296fe0fce5d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:40:46Z), 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/TCJPZ2469529.