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 0x26ef14048a4efbf961dfcf9329a18efb99806b6953b7decfae61f1066994c2d9. 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/8da8e569-cb4f-4b6f-b764-91afb16db4d9.json and https://artists.proofprofile.net/proofs/artist/8da8e569-cb4f-4b6f-b764-91afb16db4d9.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 0x945b9f5d1f4d68758de992aa48fc4b158776aa6ed88fd004c6aa94e866768050. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USLZJ1866561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cf1750342ef79094f9d5012c227bfc8cec14d6d28958f3033589197ef64d62. 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/US83Z1829401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2d7b6fab6f4e2c37c18707116b873d0532a450030a2ae64ef1543a47815ab1. 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/US83Z1829403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31afc6411e1c56ccfb9102373e1fae5e4b99cec402794f95ecd6b82953f34ec5. 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/DEH741901148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8453da143a9ae03ed9aecdffa9d56d5c1eb05bc2326b54f4fee110df834981ef. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEH741901211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4cdec9d0f32bd71046d5dda9e2a8857cc6e9a76646a6539363fd7923313cb3. 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/USLZJ1956373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a2f2efb8bf2ddc44ccf64abcf067ceb1710c5010fc7570960c5d645bbc16ae. 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/USLZJ1956376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63e0703a37d3334667913afd9945e6888bc5427a2e9b9f231d37ceb3af6fcfb. 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/GBKQU2017526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46aef3c61d573d401a85b0248fcf4b206524dd1a9a50dba5976c4a39c6fdb7e0. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/US83Z2029224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafa1def75ad165d293276f75a866f9206f7a9b96ddeecb849b85429f1930226. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/MXF012100020.
Ethno Sorcery, Vol. 3 (Compiled by Salvo Migliorini)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d6c47ad6faa771478c399908e05795e4565e755b29ab4ffe20fa13c06d820e. 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/US83Z2235454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1ae91fc8d47764cbc3d77519a765cfa5b4c56627d1160022804e432215cb3c. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/US83Z2308678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65af9e2694d68f1a8b63f63685a733ae1db2c1923280ce40c145d170940d20b. 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/US83Z2331029.
Añejo Four Seasons Costa Rica Dj Set Organic & Afro (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b32520bf9481e166c8dab697dbf83f3eb186f56a5a086fde3ca186f515ea6bf. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/US83Z2133161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462748ff537106a2edfc3a9f63bd8156699e32cc2655db2c6cab1720c329b108. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US83Z2504932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c64a581e8e04fbc9094e2eedd51db9d7d47d577e54acbda20579f76bb512081. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/US83Z2504933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3af1bec13f5069acbbd272a09ec316a5834241aaf922494d540a0afdb66b5f. 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/US83Z2504934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be1d3d5d82c003bea59e5ea5f2cc83a6fd8e5915b54938355f521b4b999cf28. 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/US83Z2504935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0e5d6f93712ceca0615e6c5d9aa46cfdcdd5ac1f1a2c6671eb02a5799e0192. 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/US83Z2520167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad264728395bc9c341e13b4dddcb81c9b8c7482e53d56e952005197211bf73c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/US83Z2532667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5427185cb71d08616649305d517a226b63def27b8bfdb2089126589a70d9807. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/US83Z2551779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8453da143a9ae03ed9aecdffa9d56d5c1eb05bc2326b54f4fee110df834981ef. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEH741901211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f8807721a99f7e15edf184e72e9be0e75c78a8aac654e17e7a714a9ee56af0. 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/US83Z1791673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089b1f4c2a4f20936be0b7af4dedd8372439f4ef6a45bfdebc63663a1daedb19. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/US83Z2121016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bfe34d95994ddb1e3ef5fbb0b4ac69b8579166383da25b22c4251ac839219f. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/US83Z1935155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4fdc041ed530e15ffdae1a7a9d4b7f3ec09bfeb5dd0ffa3db5388737fd9b4c. 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/FR85U2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1e4eab7c7819ce71cfcff577e287bc4fd6aa4364ba7d3285d7954955db220b. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/US83Z2147834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1870720cf6e611d02dc6ff2bd2aff5bfc0c35ff5951650b46642eb7142603c7b. 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/FR85U2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5581791973aff5426e98a582bf56a430fed4f58ae762d7d4a49c2b9127df75f. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/US83Z1775472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb679a35db857f74a2c46bf0987e57bf9b8fe2c79fada1a254a45a9d5ac39b08d. 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/US83Z1904523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae5efe22376ecff08ef3c3f7fb7983f70e90247d3537ef2f70f111aec1c2cd3. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US83Z2019457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd315813ff1101bd6f71cbe3815e354d377a1af264e1714fff8b0946e130c4178. 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/FR85U1900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa0e16294827029e78dcf9b780f5f14d539858122c5f42ea126441d5db5d1b1. 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/FR6F31920060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbede72cdfaf759d66f78eef40c8803cfa917bf5d24b15dfbcecfb05f3664610d. 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/FR85U2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9c8086376f2d99bb1bf1846547ca04250e13d624183b41ee30b89cb7dcc82c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US83Z1928052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fc6945416be7f069cdfe5f4efb1c051d0ea723c8203afbb3de12fc4b7db2a6. 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/QMFME2010173.