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 0x257503d1aee6b8737dabdfb2f14a798d4f0962cbacbce6d24091eed8ca9555e2. 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/130f9c68-b8bd-4190-96c6-a2c4d9a9b330.json and https://artists.proofprofile.net/proofs/artist/130f9c68-b8bd-4190-96c6-a2c4d9a9b330.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 0xea9b5f510b1c0d023f5d8ec8375240d3a28964788140d433be1d3a8a3ae4679b. 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/ES6100670818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875609c608405f49cfa905a8ce12e713eb97f4a3b52d4ad0252d5b81d685accb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES6100670823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedce7df1072ddf472cb98f57728220fca0359fb53ce92d437c2550ad7ef67022. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/CUA0Q2100612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca6519d0ecbbde8f6e81a5f7c0f49e0722069dd6fe93a27877879cd596dd667. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CA4WB2200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045b7c81218a3fb538bf052d171dc5087576247a5516fbc671156928ffd75a0e. 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/CA4WB2200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef69ad07a182ba6fbbfdbe6f9eac3dd18525551859cb572e22536165ecab6ff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF30800094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc1757bcde59fbff059d948f4b7409950fc0151e4baf64141918bb1086b205d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF30800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2da4842eeac729b43e8baecb3a000e81228132dd53cf201e2345a6d7bd85b8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CUA012005803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba623019c9326c6d9c3d9a7bc2026750d93879b000a2913319645194c79445c. 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/FRPGB2112630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf696c428a284873a0a91b5245c1aa34448a2d57b9af07346d6cb0a5fdd30ea9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CUA021913359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece54ac2dc881aa23232b3c4872f09def44cbb52cb4981a7e6812fc6a6d1411e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CUA021913530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf696c428a284873a0a91b5245c1aa34448a2d57b9af07346d6cb0a5fdd30ea9. 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/CUA021913359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332cd3ef1980fd38dad6deb289cbc6fcfd76d5c66d5e63230c524d410a3b58a8. 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/QZGLM2569458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47bb79d992eb7f30c7e10ad1fa27df177968385390d6d591dff4184ba9961f4. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/DEE791709240.
Siempre Tu Voz: Homenaje a Benny Moré en Su Centenario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c4a411213a04589680ff9d5c2ddbbe9dfa73f42562079f6315e08d6bafed3a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/CUA011904702.
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 0x7ca73e069c4c9415f7bb2380e77830657cdcf6b1ee0724ddf69ff0b5bd888a34. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QZWDD2421274.
Mad Professor vs. Marcelinho da Lua Tranquilo Dubs The Alternate Takes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb403c0915cad64da0b9e220bf09e6fb22919db4c171450819f9880a4382347bf. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRDEP2000185.
Art Bembé 20 (2003 -2023 Remixed By Javier Monteverde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e8bc76304a452228bf58f2494f26f85555561f4fe962ce0c009f70fa241c86. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/QZ5AB2424093.