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 0x46e683ac616a497fb6e083e7f3d7589756bae58de3850a7c895427d7344710ff. 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/607b8463-772d-470a-955a-2ca943accb66.json and https://artists.proofprofile.net/proofs/artist/607b8463-772d-470a-955a-2ca943accb66.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 0x25a9f0fd793c5d319168afd2b41029c58241b1f4b690ba7c67a8d4bfa411334a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CH7812533088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c901e7653ae338106d5dfcc2a8290f71a953d90b37308dabdc73c4e5b5c5bd7. 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/CH7812533089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04e4e7e1c8e911f5b9d926d20b5b72dc72f72f38576d90b435472af72536fff. 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/CH7812533092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40adc8fb3cf154a8e662a723439fa6b667de0c313d7fa9062976b2f44142bad7. 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/CH7812533093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6f5640da21e170e1bf57698ef81ac6f9f10b5b7846d98be673816752e2002f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CH7812533094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511b9b0fbe317cec77d2422592d5da571bb926144ce2e6dbbb18cdf6fbd3fca1. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/CH7812533096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7afea81c2d851af124421b0d37576f63fcb36d9b42c42b029ae638e7f6889a7. 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/CH7812533097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce3acba7b0dda2ff2cfc56bdda968a1790e5b5476adc1108fc810bce9bfd307. 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/CH7812534721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9a4ef746f7583f2ce2d34f904bf2f933f8ea8bdfbbc9241a4be789338175f5. 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/CH7812534722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefccc647e515b1a73751d9cb914239d61e1b543d935c80fbd0682d55a415bd2d. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/CH7812534723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce7975a220a8b95fb822b351cee78fc3f1050cdd880d782be095de946809f76. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:29:47Z), 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/CH7812534724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b59cdee043a1e04a294b23b9dfe45bc40ba97736a4813a6a328b66f5f41e9e2. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:02:22Z), 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/CH7812534725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97551dfeaac4eeaf4a000769f0695d276f8370f5a0f102cfc4df9cdf561ad836. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:48:17Z), 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/CH7812534726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2198b544809a1ea1ab088eeb9ba58a403a72ea768707e84bbcd803258a51aa67. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:58:12Z), 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/CH7812534727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6809e386965df3e4de955856bc86962f6dc85feea46f59a3363964e25379a5eb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CH7812534728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e214ecc09e3530c8fe737c4416e3c83c3832adb43898410d73fdb075160d09. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CH7812534730.