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 0x808c6133f8317683d7248c1852136539c614f9ee73dd99a810c71db53c3bf92c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/786722f7-5e78-47b8-bb32-f191b98df9bb.json and https://artists.proofprofile.net/proofs/artist/786722f7-5e78-47b8-bb32-f191b98df9bb.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 0x9b3a038d735980b0d5dce27dd6d6134814df482dc704298473ae3d79ace6afa9. 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/QZPLR2418108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35267cf990f3d4161f439b1f474e6255c336b5dbf8c84d535ba33dace0a5fd1e. 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/QZMER2485551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a3e06b8c480b925c1238a1cc35781a4eba4aff2e1f911b63a0c4fd8a54ff5e. 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/QZMEP2423935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74603ecaf842d0a7e0835ba400b665c60558ae6cc1557ad860871022b94910d. 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/QZK6M2449747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0f5794e7826f2d3f05b6bfbeb5bd5dcfa5793978b522df3ea353a2c40a97d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTB42319654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41532bece09c3629243e8fa97f8436b079066e314e0e0d120db054d5e534642. 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/QZK6M1913856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec1f72ada169abe2a81743b4cdc38c2ed375e079d9c48541afef64ef3d21e5f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA52373498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296f199ff5cf2560d004af8329fae7115308e3ad8d42ce811c6cc96ce4e288d2. 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/QZFZ32332353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7731a7c4a75cd05c3893a86dfaec2770d3b00778aef0891a203c016cd9a8d02e. 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/QZNWU2262172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876625e07b97ac2a69475f57e95997f75ca99720d010bc91aea8edef2a16bee5. 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/QZNWQ2263610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c569dc3c860eb8e73f1edec47da53dc96718a294e62c51e90089aaac9439cd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA52373499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296f199ff5cf2560d004af8329fae7115308e3ad8d42ce811c6cc96ce4e288d2. 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/QZFZ32332353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7731a7c4a75cd05c3893a86dfaec2770d3b00778aef0891a203c016cd9a8d02e. 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/QZNWU2262172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d97b43ed951e0941419f46dbee44611decf972c3d92235cc056d5d35e95a2d. 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/QZFZ32180348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff17438fad50cfefbc24d029d17eea4a8280dda452e95df573d52493320760c. 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/QZHN52030633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41532bece09c3629243e8fa97f8436b079066e314e0e0d120db054d5e534642. 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/QZK6M1913856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924783a80f6f150e3625acab86430b37eeaf9f314633436ce6a40a8aa3cadf28. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6L2440840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1000716461d75b118a569f0d98d8d830426b4924eb052923ce87ff2284a3ec5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUG4Z2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7b733f5ccb2890b56a7b81ad0cae9a4b7a8357d4423a56d3cd58c39d6aceaa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMEV2472224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74603ecaf842d0a7e0835ba400b665c60558ae6cc1557ad860871022b94910d. 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/QZK6M2449747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d6f7d8bb3da1be0be6703f813e70ca7869aaec24b3295eb6343efd9cc9525e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMJG2413380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a5bae9f68776bd75c55ee5e5ddaad077b9dbe9b6a7da5831d781cb9562c99c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ8B2398781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9774f90a0efe86ce8498e5d8b8d26889cc099d1d8f87752265b72e276e7ab7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZES92464198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c85914247c85fcbfdbf62ebb97d9e5622f3c90573b19699d71825a0ef68c667. 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/USHM22466999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25612955d1b0534bcd18170613ef5251e1c9ea62739cd48962f3a229477d9df8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ32478080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada54a69efacc0da7158de57d305f55a785e35460bc222d139988f3c597ce2ee. 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/QZPLR2464893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74603ecaf842d0a7e0835ba400b665c60558ae6cc1557ad860871022b94910d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6M2449747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92a4ece0dbeb218ae33081ff17cc129634ae96b220e1ffcf6b3a0a6bbe249f2. 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/QZPLR2418099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a3e06b8c480b925c1238a1cc35781a4eba4aff2e1f911b63a0c4fd8a54ff5e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMEP2423935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdf92a719c131b2c8b530e9e09a7031b151a12375fbf24e5d3dbdd428c032c3. 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/QZPLR2464896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35267cf990f3d4161f439b1f474e6255c336b5dbf8c84d535ba33dace0a5fd1e. 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/QZMER2485551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3a038d735980b0d5dce27dd6d6134814df482dc704298473ae3d79ace6afa9. 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/QZPLR2418108.