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 0x4b7a5e3ad75c8d3dc8dddfe26407b295d337730326ff0f3fcfcba83b9913e91d. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47fe42d5-6aec-41d1-a344-708751ffca25.json and https://artists.proofprofile.net/proofs/artist/47fe42d5-6aec-41d1-a344-708751ffca25.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 0x0b045c969fbc5228e8651209e1cd9bc63ab88b9f739ea06c7233b576008f8ceb. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZHNC2471356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a07917bd8e2bad1874fed869e21e611defef518e15c938baf13e37a64272456. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:49:42Z), 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/QZK6N2418364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5df44477d6703de57bb015c21de167578ec6fdb0199a08a77723c720b16000. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWQ2433884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e6e7cd538a8e6326b699eae1faa70290d43620e58b1db9e7ef728f127ea333. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:00:47Z), 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/QZNWX2481199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0a5a73650e33b6c61a448a1299d5dcf67629657feeaeeb89617f6e2cf51df2. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:47:51Z), 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/QZTB72416747.
Pon Vaanam Panneer Thoovuthu (Unplugged)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a0b3f81d034570de97c3caa94e15791c7bbd6499200dff729895fc51341c46. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTBE2445391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb53f71931b5a237d0a746dfaee6a283ba5ef36757f4bf5a1afface10c71cb5f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:04:58Z), 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/QZTBF2426855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e042d8980e0c9fd1762480a156567a268f294a51dd2e9652d1a7d03121d4083. 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/QZWFF2437790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0f68c4929047dc2e998e6cfaae0b090a559c22adddc9aaff6e0f8ff0d907d7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:07:17Z), 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/QZWFK2446067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322af4939b930d8388f7c15bbfd639ac5386826670fd8e13b018dc827ea1ec4c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFM2493065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc5270241440eaf22c40a6e3c3230b214478f1bbfd89e55599e8ab66f1b6e5a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFV2441789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d21bdcf0e92220ba602dcb6418535bf5760aa689cebc41e1d07d95c8057216d. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:32:32Z), 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/QT3EZ2484470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc78cd26972d670bc47d05933289cc26187370daa40a1803ce63cdac6b96e8f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZFZ62594731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf104e69ca971890a54ba7e7a837810801e2c2854bfa6101799ae380884794905. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN32505763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e51f33ca06cc51a58e7cf13fda917d1ddc7b0f2f12b3f5982a3f18336147694. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHN72539364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564896ab8f44a614b3ed0ef58d9abd1c246e048e75053aab60832c3353a6673d. 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/QZHNA2518635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e82dc2e920231cbdc9a296d313f4ea2295b95469021c4d8f1d7228e4034175e. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:42Z), 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/QZK6G2544884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6077b8754c3169bde4b82d5fb4757e6b94a0b7b5941dcdd17f1b2adcd4ebce. 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/QZZ7P2592935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052b7db02d238030c9653efaf363b0e95efd4d8eeed559aff8c6801ec9914d83. 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/QT3FA2515258.