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 0x0e3a93491a8e604bb7b56627204884e6b236c40c4f6e7b703729c3d382225271. 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/d0842a5a-99e4-46ad-ad8a-2ef6d9dc37aa.json and https://artists.proofprofile.net/proofs/artist/d0842a5a-99e4-46ad-ad8a-2ef6d9dc37aa.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 0xc93c117af4c9a3fb7f60fd4ffe50c5e93a63300b853ef757ffa1090c81210c55. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:36:35Z), 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/JPSR08430010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e5a45097efbb22edd54b6d0d5dbd83ed35435050144c008558ac56cce828de. 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/JPSR08004720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239bb1b29864a282fa3cad64fe59c18575bd56de8909dab0ea4756ef110b1a82. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPSR08100740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6976212090bc49ac018157251970a630bdd60714b3311eb6dc82e2707ed5f21a. 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/JPSR08212670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc16c1c41dbe88b83b1a6f51b9441eaafd0e0a83adcd77388f7b110dc48e8690. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPSR08015750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4bfec3445f5d1d4efe720aeae55d23e1fa788114a36f2f272fe1bf8d772e5b. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:33:49Z), 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/JPSR08570023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb835831ebd9870a9f3619d452fbf0dc2bc81e01a8bf1395a1b7f574dafd49ec5. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPSR08570025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde68fb2f6a6a30c71b6a9237dc10263b2b37c4730387c0610e343748f0ad71f8. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPSR08570026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc868aaacf8a30e02102a291c865e7f90583a8dd87e0c848316b37b66fb2a37. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/JPSR08570033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ca0bad622ceb7f26a0f2346ab027554414cf69526a7a4ff5564dd474e6010c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:16:21Z), 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/JPSR08201150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8674e788bedebba0b3456d8593b240d8ad23da08157febefe85c228dc39f67e. 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/JPSR08004760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c706aae065146fc360c39740555d7bebb953ad43e8625a665de12a77fc090d6. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/JPSR08335510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15c387c82a32a0d614d52ea9c71338c103a1cd70907094f4d854927bb67abb2. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPSR08335580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c00d5d64ace3b4d05b617fa7c06ea994bf064c7c94dcf2df8a9cf69815dcff. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPSR08335570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9716e314ea9ff46d8f49a528d71c19f826efa8e8450e7cbee6ef802f263d47a7. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/JPSR08308550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c60b240d0cef879048e643197fd4a78e9610038ffaa25b3e0e64a0a54c9ac7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPSR08308580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801237fa35b980d1883f30ad1133988818d460e04d571041c879512b7969fbff. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPSR08631010.