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 0x7709a20967cd8a792fd6e6df5f840269f8cafea77c38bfa1d95318bbe29420b8. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3fb5ff3-5b5d-4fc6-8e7d-50b211c26cdb.json and https://artists.proofprofile.net/proofs/artist/a3fb5ff3-5b5d-4fc6-8e7d-50b211c26cdb.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 0x723ca71cdb5f517768fc0bd352e8d30952114acd5985f43c7cbf6f7bd8439a89. 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/QZEQU2301749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4d89149af64b12fbe4dd780099837a5581fb34734df795e9279887117191a7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZEQU2301750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1b90163c9c7a5063d9af6122ce4a0890b1100f765b92018759e742f5f682c4. 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/QZEQU2301752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd8a3b35c73ef88bceb65797161b7755c5d237e3531daca088d75ffb533fadd. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:54:22Z), 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/QZEQU2301746.
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 0xa5ee3fd245e5979ab229a7dc3f3d3ccb87b537d3c662310d51bd7a45276b0abb. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZEQU2301747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b6052502e4f8ce0937d4c2c5a48a82f94017b91571e1028304a36d7499ead4. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZEQU2301748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc726a47e46ac8e6c5de2a2010576cd34f066cc4e37b9e57f3f41970746ec11e8. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZEQU2301751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81dd00cf370845f52800ebc49df38f839610ec3da0e85c2d2d1a0bbf903e86c. 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/QZFZ32343405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a23ed1db5df27a697d76064c8253a635682b1bfb0c20b2e3aaf20673669ac1. 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/QZFZ32343407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd8baa33760dc7ff697c09233f818d2f7d15be6a409c2a64f2a20055f71b834. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFZ32343410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80d595bb4a66b7a043686a46c3f5fa3dde03d4df00c1ed11de3926a0c76e082. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFZ32343411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda092a790b50374f2992e5dd90a48aece42adb6ff3ea64226247b1baaa4890c9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ32343412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4febb44ce9b3679a83e9ca5d7736cf9b3c2d49f34b56e812efcb5bd1548217b1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFZ32343413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa893b60612428db2901ac112a1e4cd7c4dd96beaed4600d3054418253199b663. 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/QZFZ32343417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1319f195e055d2c08ac6330cf36d34b372c428249d853320998376e240d23c7. 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/QZFZ32343418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ee1e5ec43a428fd84aa81a2d4645275aa44538efd72733281361ee8bc1fd4c. 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/QZFZ32343421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94a63f8fcb2c3a3decd31f3eab54afe4c6650e8f3f1043f4587754bb3cdacab. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZFZ32343404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de7a9a0f979405bb7bf3741e3165bc90d52cc68bf3b0d6373fd590942f7b76e. 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/QZFZ32343406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47501a663e6c56f77dd21c19cdf99e23ed44593846a7a92db667abe4652f86d. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZFZ32343415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d270576bcaed07ffa1af8b29e76cd3173ec6be8a52cf382316a5771826738f8. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZFZ32343416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd9616eb7944bca1d37b048435d145588dc78b7dc34e9e51f4ba9240ccf4c94. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/QZFZ32343420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1454772e5878636e19dbd2b70c5bdafffeb3db952232a7b287b6a8604a2117. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES62322398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bde52f4aa11e0a714429caaea686200412783eb0a5f4b0fe74a4a287381dc1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAY2242173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0987c346c903beedf14f338184efcc73f65f025c2df8b9c5f4aeed9a4882fc28. 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/USLN62200601.
Merry Christmas from the Saddest Man on Earth