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 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 0xc37d0c7e647aa3dbed83fa8b3ff8fa0e472074cf769ebb25c8141156cbe70ade. 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/ebb04079-37ba-4c9e-ac93-629d09d7b185.json and https://artists.proofprofile.net/proofs/artist/ebb04079-37ba-4c9e-ac93-629d09d7b185.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 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 0xbc81bc61cd476a8c884d72bc9ef8f008d2828eef5410b7a5a623fe7b837a89cd. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZTBE2350108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe07ff819b829366a28e4f68e630e3d9cd83c10c91f22b3f92fd849332b25e4d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTBF2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18dab94e7bbeb164f18a23f7039c9e84b833246aed411a5144bfed2e5a3a658. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZTBF2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a67341bd0d83047bfd7a131841d40383c96ef1ff98bb58a25273ae0b951cb5. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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/QZTBF2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4f250c4a95181a3914da67b06810fdaa436617a08d3d233a2e348cffb4c4ec. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZTBF2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfbc59df70ee1f1bfaad2ff69aceb77c6ab2f87616238fde8684a5859ea45e6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZTBF2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fae3dcb5c4f0cc553a7726ab1883a047d4b86c53f88a4e8db66a47ff1e13dda. 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/QZTBE2319616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc1b66e08a9094c5729c130dfb262650199a671419e76ba0f2b3f3785fe02d1. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZTBF2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea18fc0f06baab38601afeb6aa3b49287a2691e342fc9782f86b87aad7a3f5f7. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZTBF2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94010a223b37dfd1a739a4ab018301191dc20cc3cadc41074cea78c58b26e5d1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZTBF2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299b67a1a647f76051eef08d607110f844ae2b289fee469bbb8c37f2d7dc0588. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTBF2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134358a7c2f9317d4e6f554df38a36612982658be3d900f06fd25c1375a5e0af. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZTBF2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6243d518d1b03ce9074ff55d58e3e21202ea02ebbaea01285be101693d8f01a5. 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/QZTBF2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8de0bf8608f2814a25afb70a46b653818e300a47d1f7b11babeb27d12b2e500. 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/QZTBF2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da87872f98048c51d798736e6cfbb3a7de382a2418ddd9c1413a23a4b6e6739. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZTBF2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9bf1709212d0ff93097787b04cf9bd1e945ab9d056921191f42a4ab915705f. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZTBE2365949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dd28091db012d92ac25a9d93c1347125add84eac13746c916104ee3df6d565. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZTBE2365950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b405844cfaeb2dba6fdd31d046789089edd769a305aed0df2ceaefd732bebe. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZTBE2365958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f07a85914fcc8415641429604aa17f66a0a5ec8e25bead10425c7f19ea0ed6. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZTBF2334144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4c71d1a5e3aad3f2bbbef6569772d46d846ee45e2478297cbaecc5215f047f. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZTBF2334145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edeed7e0894330fc923066b51cef21139a45deda39df69a1b965e6bdff33136. 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/QZTBF2334147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110cd4c5d9e249572d4c6713f1740b25b958aad4aec26ce8c2b9bf3d5e7a6acf. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZTBF2334153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdf69cf8146ae8a1efc6701059f340c47779f968282cf3478a08b472e498129. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZTBF2334154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3dc784ac29be3f749e7fad5922662f30ccda96dbf60ed53b2f788783cbe80e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZWFG2310327.
Mi Ultima Caravana (Mix Recuerdos De Gaspar Cristobal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008c3aebc38c83c8a816c2d7c0e64484e27f05bef2db643acaab2a38f2b58af7. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/QZTB82465964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7b15b6653e15fa61ee5bbb1f636cf32399fef3f7f7af2c6556e46979ea7e72. 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/QZTB82465967.
Homenaje a Gaspar Cristóbal (Despertando Recuerdos) [Remasterizado]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4bb6584b007323d5794ff875291c88a82eebf680ecd1e362394a3229a40316. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QT3FB2552608.