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 0x74564bf6ff32b80a2ccb2142e62f27e855488a6463d7ae937151e93bde478af5. 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/68ac39b1-a052-41a0-a193-86d71fd6e3b1.json and https://artists.proofprofile.net/proofs/artist/68ac39b1-a052-41a0-a193-86d71fd6e3b1.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 0x97282a8b5f6a2f5c0447efd82709ea01d43a51709423bf9e949b52c0d4bcaf24. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRN1A1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7e9e8ba2fbbc5fac2ffdff9dc93862b4b8ca0d5cbe5cb42b0f1819a17f51a5. 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/BRN1A1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dbf5f4976bbac03854f1ffb2c72efacdf6c5c1fbabd27dfcde7d1008913746. 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/BRN1A1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f96436783e38c6165f8c0c7894c646cb59f58ce5139127508034e3f3814358. 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/BRN1A1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab108fb7ee646659c717894247c31cc80401e040b456aec2ca0fdf349e5caa3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRN1A1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3c5bf2a074c6cb066effd5c2c0cf90d9a73a9e609169f70870818ed65dea2c. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:30:43Z), 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/BRN1A1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92fae766ac9158cbfaf9fe1f5272fcccbf6ac4635a79e0f3aaea4566c3e442d. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/BRMV70300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3f4908fdce41e95f4662766c745d4023397844c0f7c284c554cacb54394435. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:11:19Z), 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/BRMV70300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c56304d1eac3ab5f22f9126a1492c1581e55d3383beef1a7c7872a6e1c8695. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:09:08Z), 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/BRMV70300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd755f424d43cb3f23e9adadebb3c5e24bf1d4050d431d0676fc7daa54dd87072. 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/BRMV70300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1138a52c4993e7667feaf51b2afffa6927c2e6d9011a9c3c98c664871e8c076e. 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/BRMV70300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3244139977bae947b8460628d58acf89b0f49cdeeb904d7510bcb59a815ef1fd. 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/BRMV70300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53326e8bac9855afc95ba5a7349fd4a1086a454603c21811b36514dd1879909. 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/BRMV70300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc30a153cb079028632f0857d361ddff81b8da5878b3df026267241e34cc0c8d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/BRMV70300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37ad0e79df35155a5f07455ee5d9a575eb7f35d55f20e07567989ca70ca6118. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/BRN1A1900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d41003236cbb836e0f8a75880c107c3554650c0908d1e3ad2ec4b775c857332. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:24:18Z), 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/BRN1A0600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a39d81b1cdb9533a2a9b68e92441d8cfa642cc6620a61de9be40a02fda5204. 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/BRN1A0600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce4bedc6b1605a78092f707387448595f5ab8a566b555d1a21f94c39f34f389. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRN1A1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab44f920768b050df2076139f346763d061bfb0e880bc1df724427f4623ffbf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRN1A1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4597a29f8169c717bd85e666c211b9c9244be3d6e09753aed32951a8fef3ee9e. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BRN1A1900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada8d426eb95bb6d50490f0b86a3e9d60f918c54d8ddd26686dfd45311a64d97. 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/BRN1A1900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab924243bb14a05087d4596745f7c44069d98d976367db24fd3bcb5bc49416d8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:43Z), 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/BRN1A1900032.