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 0xc066dcc000e6f31374d835b1ac53d29e46775acb703bfb5cf022fbdaa348f784. 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/1b0221d0-5328-428b-9ea0-ace11b949bfa.json and https://artists.proofprofile.net/proofs/artist/1b0221d0-5328-428b-9ea0-ace11b949bfa.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 0x569f286fb9b1705cb9127782a5b47fb94074ad85c0a424a811c9b0b05718f83d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEZC62161362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9591f60550edb124b204742860815d0b5e9ef0a20e860706b72b25eb6ebb1c24. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEZC62161363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8306f6eb5999e25889a1958bf5659aa4018c2b14568e770710c4d23e215d6a. 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/DEZC62161364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60248b91e23fc2816f2da30104372aab9cfecfe17d29dd5e50ad20b25ea75520. 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/DEZC62161365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ebf199b81864f80c733ec737dc305db84495eb76b8e8f2881b440d20a32483. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/DEZC62161366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74095c613c68db5c6f6e1e99b440c93149c59632d480427ccedf827077185826. 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/DEZC62161367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc056fac385c9e5460fc9a4e8d2a04b3c716621a63d9c32966d97992bd7019827. 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/DEZC62161368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9e1a78374986f0a192f6503670436aede11b0e4c60ebbdef039e5722aecea9. 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/DEZC62161369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b2957b991b0744447b3864d8bf4ceb24d5a5ed69f97598eb8a9a2f160b3021. 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/DEZC62161370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1e7c15e9a685f9737c49b0cadd430406b8b5562704193838c37bac9ccc005e. 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/DEZC62161371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8caed8349c527577c8c495ed7e4f3280b8cd798545cac0ea53f507bd5dd2ef7. 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/DEZC62161372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe02535e935ddaff305c0f0cb0b6196f38df7cd6ae9a7006bc29816cc6c3115. 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/DEZC62161373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee86bf35f52019239ee4d52b29aee64014267fe5bfc64856042de47322f898a. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/DEZC62161374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd989ae0e083ff870b204cf32353e9ad4c188c17ebd0c410ed330e7a081e42303. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEZC62161375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9cc924476ab6bb22097227df8f3345424f7e532d385976ccd90ce1705d8c4d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEZC62161376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11194ad3ee81caa4c88f4e8a723b0309dec2346298d7fbe6f9430cf10a2293aa. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEZC62161377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3cecce2b0bac61d27f6d5143fc8ed1a980c8e0aebf224c94eee8f3f03b09c0. 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/DEZC62161378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe784fab407e5d1132bcb8dace246a4e82fa106ccf4235cb6b27d2b97511fb556. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEZC62161379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef91c6344c929dd2d50ffb0532943be9747cb3eb19ea0182332297534edaccc. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/DEZC62161380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5790d3778466fe7c7293f50fa199c0d14fc54213552b75603809830e78a0c41a. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/DEZC62161381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cd68bb2dd5dea87fb74d015e8ddb03a929f75ca490262ee47e2f015ca5cff8. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEZC62161382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa954b95e5687866b802330453c0ac4eb6e88aa26ff3a7bac44bc8f4c0714276a. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/DEZC62161383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde54d4152c22dcfaf2897246c7da5a4b1eca1520f628713ce433f208968932cd. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/DEZC62161384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824a9a27d8a089e07d82f18fc64adce4b6c38a42d7cc407a307448a9d7caef04. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/DEZC62161385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75098766dcc85f8543e3fc33ff0d993e53cb21b7eea32e57b48b6755fc3110cd. 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/DEZC62161386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e89938354ce15523140449afd94d5481fff7ce93b4883620ecec9281ff7b9a5. 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/DEZC62161387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14aa79beb6732ea445e9318a56daf2179d5314abcdf7c89b6c1c2c0bc8a0f89. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEZC62161388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726801212ba5b96b976643ad9d568e08a0ac5913dab8453523f5692852b19c08. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEZC62161389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47e901d960fce1f6aea378fa24d809a276320ca136b74c094b3bf41433cdb3f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEZC62161391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aba99f60dfa87cb65541ce793800597065b0d91397f8c5b4aeb1ad08841965a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEZC62161392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c04d2f6b53579916432cb2d9b926bc33d8a551c08ec903e7f66bee30605e797. 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/DEZC62161393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976088bd73dca8483d9e4d9aee1c1a652aa11f141b932ac0e720a53c640357df. 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/DEZC62161394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c98893240c54de21ef40fcfabd1aa17db548a0081317eb5b3b2c090cacfb1b. 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/DEZC62161395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48496c53be87364ec1be44b876a6ce81019b0b92afa40a14455281ce6aa0652. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEZC62161396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c766963b2b5df6ce05e6cf4af8924163ca48ebc4f2ff0c2d817da45d1fa2d0. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/DEZC62161397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f51768bc0dc83f403384d9a0f2e62bd7c97d03e13a47111a24842b36dcad72. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEZC62161398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1417ec6f99e866e49c102ee5a80f8d96747a3391ecfeb1ee78574961d517abb. 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/QZNWV2125763.
Cinderella (feat. Rajbavan & Kadhalviruz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445a9226b3d8361a10b7dadaf2101af19d8f0b89ded95b675f47edb7ad0fd487. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/TCACB1464431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d4a5a6995fec32f475553e8cec112fca4eacd2f1382552ff6a3ca1974dbdc6. 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/TCAFC2063842.