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 0x7608e5c1965116542cd57e27c26bc11fe80ae77f6d13c4a5d4776fe55b89e419. 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/f55449da-56b1-45e7-bb4c-2b9a68917464.json and https://artists.proofprofile.net/proofs/artist/f55449da-56b1-45e7-bb4c-2b9a68917464.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 0x49c9f8a7d2aaaf906b90d59cd7fb33ea796af8ee2952d1f2d14040be851ad9c9. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/DEH741804540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b155b6c100c00a3c5c1fd9de9bcf0849259043513e2b465f9da17e1ca32cad6. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:04:43Z), 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/GBKQU1926125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8d64f41f0650b8582c2b31afd280d3cbde4a128108933b6887c7165edaca8b. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:05:38Z), 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/GBKQU2039148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca223ad798d31f8003703a509c22fdab4dba324b5299df5dbcf50c3ca62788f4. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZ5FN2055811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83820b62df933b26fc1a9252d518d59aeb775a53d26374055abb5d0b94ebadb2. 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/US83Z2121501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944b3af216b8a28c55bee2d72c2c612690568e3dded64b2e93d9cf7f5ce99d77. 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/US83Z2121502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a5e20bf67650d6e7a0213bdc9915b6c5f8d0408dbf8dba323bf248395d263c. 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/US83Z2121503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010c4f0fcfd90232cf4d2e86362936090a66c1322d554b7a64506fb1f270a648. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US83Z2132124.
Montreal Madness - Unknown Concept Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe355764f67e56b0c180a2cb343f7a8b0545d8275cc01b30d3e97094d6114b987. 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/US83Z2138529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03645e8199ea5464292ac5c67fd6db9a8e583d2304afb024d69840ad3aec8440. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEH742178699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44abe4de75dde8eee37e438794e0e5d14b80531115c2db6deb3062f4d299ff44. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:45:38Z), 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/US83Z2346011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983ca00fe2126e14d5962d89a004a67409837aafd6e64d935d26ab1c31b9e905. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/US83Z2346012.
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 0xff4163e3b2bcac1bbdead73ef035424d0630e82de9ef9a3fce39ac7712788675. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/US83Z2473603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e953044993ceadde4cfc087087578851ffb4a6d2f7066a14ef2f32ba282119c. 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/US83Z2489208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8232d2b11a123d693bceb149bf959acb90cab604a93592868846379d2182dd15. 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/US83Z2489209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9cfc3eac6737cae5bfddd7c4f34b307d7bcafb134ae7db1bb7eaae49dddede. 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/US83Z2489205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2919dfee4eb54905c1372fdfe97f25de29e9f42d745c9f444fd3191027ab82. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US83Z2489206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a5385daafa237ab7c92c3c873bffedfbbd254bb1248bad06a3438768cf3ba8. 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/US83Z2494509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e0ac810612009cbb745d33ec593b4f3c72059df7f70254ec89328a004215c0. 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/US83Z2494508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a7fd791623db69251788ebe4828c26ef4684fc734aed6b800b2c67021ac5fc. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/US83Z2498709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f16efc65cc7307ccf752e3bcfa0829b4d25bcb99d5d3105d67753eb697f610c. 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/US83Z2402076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c0a57a6e9858f7fe0476a17268fafa15184e0f930faf79fd725dcdb5504576. 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/US83Z2413262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a5a6a208cebf21085a9363df50bca9376074d06d5689a14b1906bdd32e2895. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/US83Z2413263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4852c14e3561b5c15373cfd8cc8bd36c736e6e53a84a6c75611982f823bbea18. 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/US83Z2502944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3417518cf49f46c3a093538965be2d28e0cc5bf67243f37625af5122fed342ff. 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/US83Z2502945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f7e7c92f3efa72cecea016a6f374d12c3a26ccde9a5d61314987b40a5c2d0b. 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/US83Z2509304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6206f5a132341c3c0a6d43e549b8cfae9ccfcecda38d111fe8db82b6fe852159. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US83Z2515832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb0942a2730ab00b70d6ab83c5246d3f7d6b4942b6b0861cfca9da6901321b7. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/US83Z2522844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f32ea3fe5454b68e0abdf2885c90d8e640b1ce88f10004d24d086a7ed8e793. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US83Z2529953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f605c250d8ecf0ae318f6b3f02a12673a00eee9233160f76114ef15afd7e4b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/US83Z2544480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fa6d01a1d972e95ecfc39211a117dd938e1c21c73dd7a9d5dd83d4a59ee893. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/US83Z2552518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf921b0583aaee229efdd3e8d2850fff7d2b5e46e70e965ca2edd116dad295800. 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/US83Z2552517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b2cceece50560161bae759dc87eb90d86453d4e7a9773de30f6edba2b59c8c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US83Z2559094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9317a6387effd3d33b86df1b06a587080ee5d569d80886056c8ccf3c8de3e8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2319723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce412f45ae092d675b44c0dc8a81c5fbb096a5a942a381fb036fa44f2851ce62. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/US83Z2208116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3d8a6c2a0c9452edb9c58ba2b673c7aad1ccf8b5053ce61d6da0036f3079b3. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US83Z2328683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fff4c632c09150e88d9ce26c2e616620facfae16c86400be996be587cfcab31. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/UKR6V2380426.