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 0x99264f54294b4d441b4a210fdf022d7f2dcdf515df539b6286ad1677a544fcf5. 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/fcc480ae-467d-4663-aec2-6538e6dcf4b7.json and https://artists.proofprofile.net/proofs/artist/fcc480ae-467d-4663-aec2-6538e6dcf4b7.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 0xeb1c2f45c37b9635cdacae75133a30054a28dc0f28621f34ec740484b45016da. 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/CH7812039915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a32291d621a70d1a658b0030dbd24cb9308b0eab82deb2863b961ff17b42c7b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/CH7812066462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04807171b813f8c036e2dd167a3cbb0f7d7f48261d706e5dfa5ac8d4107a81f. 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/DEQ022119649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3c11f315d2ebf033da40e2a01da45ecc86c28ca13934ca37b5c5c6458c0b89. 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/DEQ022274645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1da6a406547eec2848a6c4f37d97b42821861d90addc8c6b4edd1fecc84f809. 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/DEQ022274642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0479e176fe1c607c624b960b511bc84e80bf02db800a66f6bc2d75d8e6bdd19. 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/DEQ022274644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3c11f315d2ebf033da40e2a01da45ecc86c28ca13934ca37b5c5c6458c0b89. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:59:32Z), 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/DEQ022274645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf41623adbae2dd66f263f40c5c09cdf52e9b9112e2449fff0f6d56f5383dd6. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/DEQ022274646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22330551703bd3914c07598efdfca9098b77911e60f7857df5c84472f2090e1. 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/DEQ022116430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f607689e397534808c7a46fa8e6e122222e964b48f8cd69bdbcd0f84d561f92. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:06:35Z), 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/DEQ022119172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc401dd2838c46fecc32a4b3a6163b7dfdff009fbb023344adc334a0348babb0b. 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/DEQ022274654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4739ce3277b3d48336a2057ad1687ad92e9208876e30e0846917a7b180c03624. 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/DEQ022280902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1da6a406547eec2848a6c4f37d97b42821861d90addc8c6b4edd1fecc84f809. 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/DEQ022274642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0479e176fe1c607c624b960b511bc84e80bf02db800a66f6bc2d75d8e6bdd19. 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/DEQ022274644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3c11f315d2ebf033da40e2a01da45ecc86c28ca13934ca37b5c5c6458c0b89. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:19:45Z), 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/DEQ022274645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22330551703bd3914c07598efdfca9098b77911e60f7857df5c84472f2090e1. 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/DEQ022116430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04807171b813f8c036e2dd167a3cbb0f7d7f48261d706e5dfa5ac8d4107a81f. 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/DEQ022119649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fa8c5dd8c054c2b66270557ce446e3a623472ecd48b1518d9de6bc44fda2e2. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEQ022274652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f607689e397534808c7a46fa8e6e122222e964b48f8cd69bdbcd0f84d561f92. 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/DEQ022119172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4739ce3277b3d48336a2057ad1687ad92e9208876e30e0846917a7b180c03624. 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/DEQ022280902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea25708b5113a095249856a58efd118180c60ad6136e2bc21568e4f396d6889e. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/DEQ022380012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b7fce13fc895d3512ea26a2e4e55e558487193b2aa63e8d9421f0e67ec17a2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBMJG2317643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d50ec46a869a986a411c3aa8e82f7e6f97f7834eaa78c14776902c28c8bb698. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMJG2321726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0cde000afa7c8fd6a2e100b3a648c318b7982363d056c65a7c8adfcc30d577. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBMJG2329377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb11b0d50a777360629d1387346e25642aee9c747f7a2e56c131f510f2cb1a47. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:56:28Z), 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/GBMJG2333991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980fa7288cd2012156e632d46cc91e59346b29c2d60223535b2ba2c065615e44. 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/CH7812372496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381404b553a22ad2b7bf5bf1856912af5cde233a30dc99d4fce2011a6654db90. 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/GBMJG2408173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7676529a10f016a7530b0968601414535237cb6a0b48f99c46945b0f867fc02c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:09:40Z), 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/GBMJG2416275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1463fd4482c112e6573c28b2fb97239f7ede89945e993aaaf5ca879cde0e5c70. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:57:25Z), 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/GBMJG2426836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2904bbdf80c724e6a0f14dc605e55d44249e75b9a10df3e377a4801fa7430743. 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/GBMJG2430484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c976422a1a53d9c64d68a80945de12f1f2f1daf8f7827a02830f17bada056fc. 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/GBMJG2435365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b19656fed82d12d2b9995484b4e4ce9b561a7818080bae9ae242986af91e22. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:37:24Z), 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/GBMJG2435367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86732e853690c03c2103dd83378c4aa7ddf8e8fa6028b2b12827728d9dfe2129. 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/GBMJG2433316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca500303d6bdc8d7b6eb905f25dd656d15275f44bf243f68401e69827504e9d3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DETM41610687.