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 0x265aea329e7ec4c030160a442e29bff6726fe6e2e10794cd6a2300876ec53a37. 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/e9346a47-45ae-438a-bd08-9330a8d2b75e.json and https://artists.proofprofile.net/proofs/artist/e9346a47-45ae-438a-bd08-9330a8d2b75e.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 0x8d42c2d067333389ddf0d28b6be8513f82eee0c637f620e7e12997e6c4dafc1f. 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/QT2VB2513424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe25f8dabbb91cd733c139aaf300e56d2e7efd64f0d5d454cf2afa5572e357ea. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QT2VB2513426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45c0c0ac18e7536a7ac28b614ae8de8d5c4f2179ec68595b9cfa9a91a6324e9. 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/QT2VB2517560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73c5bc38178ea7801b1741598c563b1506812f14b0e09b8a07d479564e6bf47. 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/QT2VB2517561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf545a4a39701a1d1f0e5e67c7b84c03c90fc270b2f08470fd9edaf3df9119c15. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZZ7L2459949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68449d20d517e9367abb145b89763ab1457fa34a377274e1cb84e67b477c9f8a. 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/QZVEM2562062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529423e358e3909dce075b3be291c28a275da3bd916976845344366e4045e5f0. 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/QZFZ72579261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246ab7ea775fc8ebe212b73498b8abd08d1f6bd4927f39e7b0c316de317781b2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDA52520272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc61e5d7dde63b720d13d975739fdd6544135d56f99f0095924c5289ee8dcd25. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QT2VB2517563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aca0af22c289f9ddbbda1da87a23551aa04a5a4c4239c4157e6c2de83ac52a7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZVEM2540520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5126d7c3c97fbef462eb64718715b540cb9bff84c6800aa6eec2f2846b434de5. 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/QZVEM2540521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf293eec370164d9ecf87d87c10d1a078e917b5485f6c1e770552e447227e48d4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZVEM2540522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1598cf6799799945323efedc64642e3e186ff93a40e2aafb4df38cc919f58e5. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZVEM2540523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b015cb2d91bb26a15670c9bd59745883a72bce72e195f424b6d02e4fa228bf. 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/QZVEM2540526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc266286eef2b25dff2054d061f7059a4629044aa3a5c2fd9a1633c09937bfb. 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/TCAJM2522787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5a5a1e71274c7412d32a12c292c07beb189e810bc9d43c9e5a6a6865aa10d5. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:31:29Z), 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/TCAJM2522801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6164c1b1b88ca595db68aa52c5c6a54c21e517a5d1cace78250a72c32f191083. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:28:01Z), 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/TCAJM2522809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754e1077566beb187f9f9e12b2923572ae92c5fccbbf9f4fc04230fcef708b3d. 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/TCAJM2522812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fd3d2872e9246f4d85c39daa8bb5eeaddf15a92e03b8bd92613dfee8d7b88e. 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/TCAJM2522820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddf613dd31091731b89f5b66e6f2d6170e611764345f949a2bf3b50b4385406. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJM2522832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27acdf3306e56d944a542956910d6690596c5103108349ba67a3903985774a6. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCAJM2522862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0edbb94f3a9a3619bf8b4d98be72e01aa6ddd7b6d223e2e02d0bc957b95a655. 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/TCAJM2522878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1eb94f13660e988930bfa37906b65f02306391f2af00ea3988a838ae2d5ca4. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:44Z), 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/QZVEM2558138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cb828bc6e524a07413f60393e986d9024b671bcde097ed57dce0b35c23fcfa. 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/QZVEM2558140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c052677872e3620d5d423983e19a2aba896062e8aebf77163a4767d7d72895. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAJU2564347.