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 0x75aa4b63b7d33eb2939e7db75e0f977059a2b24ca8a48a2f96cf798a25357fde. 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/6988a963-bb7d-4787-a383-9631cd4407ad.json and https://artists.proofprofile.net/proofs/artist/6988a963-bb7d-4787-a383-9631cd4407ad.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 0x7125e342fbd63b422829393ce46d7edb2bf52e1574af6424ff0920d6d0fd4be4. 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/QZK6Q2023864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2060e62608967233232cacec46ff1d945efcc1d3761c87a7f89e4002af76d15. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:23Z), 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/QZK6Q2023866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdac9a323569fdacb3cf187b5c82756aeadcf7b1b68377a3ce4316014c24995c. 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/QZK6Q2023868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a504a74714e524f22d600e55371461596b61124792189d6cdbdeb28f7c266eb. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZK6F2091994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bad950ac5a302cbb5138860a9d829c84d1d9db02e92c3b22c6ae9f3caeb4440. 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/QZK6F2091995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3691bb57b65859a0f7b2d189523e06dd6a1d17a10a5ecfdc95cbb350d96d3562. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6F2091996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d46b88f947714d88c9a3089f1bdd21c86c494728821d60ffe8dc568b1d39ec. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZK6F2091998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f71011aa54a4d5f48407bae2719131ab3f0ea64b3b77d9a656ba2cc5b1d497. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:26:43Z), 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/QZHN32199926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4869b4a2d1ab59fd3c19df0d3fe54bb6f3ed1cb8935b5fb96f2eba793950b39. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:05:38Z), 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/QZK6Q2219703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd198ef2687b045548885bb910555a03d9465c46f4f90aa137960d2591199189. 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/QZPLS2241350.
It's Beginning To Look A Lot Like Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada9cb38f336b7027e54d692e604bb40c5fc79ca2237c9c885bcb07251ca4d5d. 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/QZFZ32318157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e67c99c2e338cd2b72094475d550bbca6225dde8cbd50ffb0238d18937c665. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES62375653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5f10f839c3972333a6f2d75515b6b64ba44329a45118e8ebd026a34cf88c61. 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/QZK6H2348342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80c65d513e185ba107941382a4c2c449a00c1a9cce2eede4840cdf0140d013. 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/QZTAY2358468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b3db594da3ab1d74752f1ad42bd389f9bf0907eb580796d967b10daf01ba59. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTB52325898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed9a1e722dc4d7d8e0707047e777149f28ae39fe5d475b81b389257cc1e1db7. 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/QZFZ42438675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf8e4497025533d3aae02cbf428229fb8e043af48c754dcd7fd8d5386c1d40d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZDA82421385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd87056aa97e47b6551f87b434d64c859313c84e49078f0c40442d1cd7690b14. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZTAY2410243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fa45e09110c2190216d66a0a33398aa99369f6bab555b9e2bd8e0ab10a4674. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZWFJ2483478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf366ab9d254530921b88a2826ec1731e32d6a1d65b2e1662a4281c5d2d535e03. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:13:49Z), 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/QZWFN2436749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a504a74714e524f22d600e55371461596b61124792189d6cdbdeb28f7c266eb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6F2091994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bad950ac5a302cbb5138860a9d829c84d1d9db02e92c3b22c6ae9f3caeb4440. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZK6F2091995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3691bb57b65859a0f7b2d189523e06dd6a1d17a10a5ecfdc95cbb350d96d3562. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZK6F2091996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc12c5ab44c1b3723a34b34dd976b631f0009142a740711b745d01994645c114. 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/QZK6F2091997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d46b88f947714d88c9a3089f1bdd21c86c494728821d60ffe8dc568b1d39ec. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZK6F2091998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd198ef2687b045548885bb910555a03d9465c46f4f90aa137960d2591199189. 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/QZPLS2241350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b3db594da3ab1d74752f1ad42bd389f9bf0907eb580796d967b10daf01ba59. 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/QZTB52325898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61db3fdc9de9f2c021b3257aa89b2636c798922b5114348f874a566ad4961da8. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZHN62534017.