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 0xa750940e1af68160cd34fd6aa050fcc1904cc47897b89a9cbde8dfb925a8a9be. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27cd25f0-6185-445d-9661-0a70a8d8aa20.json and https://artists.proofprofile.net/proofs/artist/27cd25f0-6185-445d-9661-0a70a8d8aa20.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 0x34bd23ed0176cd2541b37152df542786899fa7fbba52e083270f38732726878e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITB281100037.
The Heart Asks Pleasure First / The Promise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b7d23513f02cf32574d7f5423ecfc1beaa94b8f53340aa7731ebf65ad05cd6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBDVE9300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16adbaa29cc81e0a684d051dbd5e16495dae3ae295977259091c13fbcaf75f7e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBEKZ0300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced53c0c3d89266686c5f3f163bdd72a13bbb2e662a59f903eda930d9f8efcad. 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/FR08F1200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce52d5407bd8870e99a114330c611ee68ddc8bc1797ab9fb01766f52905a49dd. 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/FR08F1200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a5c58b19b065c016f226ce89984e914db2a599f1409ab8a9e6965230fc0b70. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR08F7700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb5839a40704f0f7962bb6a81f29e00b4871cef9b1e01dd1ed4287ba7ed49cd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR08F1200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e967e339ac4fc65b915f23180297b9e61f1f9e6d3fdd43296023dae62477e8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR08F1200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e749a8399434f07455898835381c84ffd96a6e8bfa3daf0b395bac054cbccfe. 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/FR08F1200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1655b66c88ed01ab66adb7ff1b12933755ea0c756be9c83f69efe0617fa61a0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR08F1200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11d964c96d69b4fdb86bbf0f3c989b7efd432d3a023612a1c135de5681617f8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR08F1200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d88ad3cda865c23acaa9d8aa6b96a7ba8876a7e9b9556e6b2e93a618de54763. 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/FR08F1200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a9cb7e0770f14af7e180a5d09385943c5780c485fec4768cd291590c0aa8b1. 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/FR08F1200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01889261ddb33866dfaa4bcac7655cf3b34546742a5f68d0487319146fc825c9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR08F1200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958913d6f9964474e11a83fbbeda65d44536d1dde9287527460e886151d20598. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR08F1200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cea933fbfcf51b98a52629192cc228953feff4b62ba6a5697916a1f209d9b26. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR08F1200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584a09038d8adc758463d1e7200240e1a9659c051f1a4a1947856018626ac19b. 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/FR08F1200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac460657a50fc5c76e2fee2a337e57224aef60fd27c3c4fed3ba4a232624798. 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/FR08F1200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafadf858473e89258149ccb9da9012c3766d45979491358ac9017988a714be15. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR08F1200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ebd0edbfc59d7410e9503e9305b3d7578bea948dfd6cb27c0f9579d0b2abc1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USH7W1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61eb10872980c63e8dbe9a739c511c025058472e1ce6c7e5c430ca895b788a56. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USH7W1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bb028e6c1f7d1aac3fd3c2edf863255f58d5a489245979fc8fc00eafabe6e1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USH7W1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b05f6d6fb79919e16614f205488ff013e29cb9f6793083b469ec03ae2716cd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USH7W1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cba7bf2ab5f6234cf1e7e620a986e1e36bd763ded98941bfaf32e05ff345a47. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USH7W1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa426794fe179deaee7a06ad616179e5ced52ca9d1f4db5489735fb808545a6. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USH7W1700002.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6069b67602203dcb8632cb8ac09ae360e7b411894ca3885b53136eb125ced1e8. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USH7W1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe9a06e174416fafa70042effb321d8205e1b16b039b08c3cf9a933cb51f32f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USH7W1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc675eadcbd4b0336617b5d555ef5e504347fbd3b4d66b73332c9c2c28d8e342b. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USH7W1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f844680d806726bacc7adbfb5fe1afdc59c15b15ab8cec8899c4d73a35e58f. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USH7W1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda823555ea09fa0ea4cb0fab700cf2d51e7b819b9c11a50406e03fb2d4345f19. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USH7W1700014.
The International Staff Band Of The Salvation Army
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eead5dd4447b607db0db584021a0324d56c063b044e753f5a0a47ba7ca3aec5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUM70812970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8a16b4d9f4841e3fdd710da8eef3bdc32aca9a3a72fed9ed3477a23f0cd049. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUM70812965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc62aebef0115c6607ecb2c8f4ede29627c3f48ae251c388bb526599d8e2fce. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBUM70812964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdce28a372b0c8658c5c8a11c4a96ff87fb2666b7bf37fe03c4fb6e799300160. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBUM70812974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff6214a330996064b81cef749eebb6258fba8b1acd1255da466d1eb57603c0f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBUM70812976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc841309359c609da2745368dc90d10d449fdf5f14ad0f7b1f4d890f64b8ebf64. 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/GBUM70812978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999a563901a62d4fa6a4b1028922414c3720dfea59abb8a3eefb8529d9a80b30. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBUM70811811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f319c3bbf01c11f5feeacd6062c982a689e91a539862f5c2b51c8faa0c9f75c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBUM70812968.