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 0xf0a9f737c4f8e0d3fccd66282ee982e9c9bad77fcdac10ee943e27135235cb4d. 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/50ab92ba-cbb6-4f86-8ece-cd9917f06c65.json and https://artists.proofprofile.net/proofs/artist/50ab92ba-cbb6-4f86-8ece-cd9917f06c65.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 0x22a4192ab83d285eaf36ec97925d8233b4c28928eeb63cf07f06ee8951c5bcec. 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/PLV402401819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d4ea0201e00bf079b1259b603ad5fddc9c34526e01bfd4e32fac61738f78fe. 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/PLV402201721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c4cf7df97ad684d4d34160eba968c40a70c141a306993c3366d795c9c0ce23. 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/PLV402201679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb5e0c00aca31e3426817420477bd2ef2a122779cbe9c950403c3680a374332. 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/PLV402201705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8252afff7e85313d055ded1274fa2c34cc5a38c3b10cd1f61307f47bd52a5238. 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/PLV402201715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25edd604bfb6dd7efd8fc12a58510cc221bfbdbbbb94d1b276437de3a5ca3759. 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/PLV402201716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc953bcf0c0818c3a49acd9ed36d23653c9e27b4eccec4263474a94c7ce4806. 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/PLV402201710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd329d4ded0d6ea63f757e478ae9cf819aa4c51b30e99d2bf84c68624edd7199d. 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/PLV402201718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020d784b070b9670968cc96b9d04787b87543efde30bf447dc5e70e840c4b363. 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/PLV402201719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2101253ebb3d52151962bf691916e592d7d099571538a2dc75c201b323aeacf2. 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/PLV402201720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d4ea0201e00bf079b1259b603ad5fddc9c34526e01bfd4e32fac61738f78fe. 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/PLV402201721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33c05f391970a75f7b4a8d438b00160ba0a7e1dde634dc1e5578eb7875901e9. 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/PLV402201722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2dbc67e73bb65927436103cc9deff8cf65fb1ced3da5f544575dd049fe03d6. 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/PLV402201723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7d3cb3ae3adb17ba4f1f3f41b1c206a0ecd6dce4596fd38e3a99bad9e8ce74. 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/PLV402201724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dbfb50f6b449d4551ab2754baa558a3f61cbc5fd60ddfb074b3aa5450618a5. 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/PLV402201725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ff8203f91a54d7824aba4d43f667d1f49d6f81a19faa4e1089739d6a6bfcda. 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/PLV402201708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca0e50814d51d27a54fb606e65075e2a389ca69cbb0e847de87f5bd8a2e4140. 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/PLV402201727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f9ad28ce3d28c911f87acc208fc70fb3044f7af90b2d591111f5ee1fae5761. 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/PLV402201728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129b44f3d95727ae79008b7aa9930426c0c30b7c95b1a047c029d4e4f8a7490a. 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/PLV402201729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16709c7ef872f6c75893e48880a55ff41b22b0beb4166242174b5195bcf739f9. 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/PLV402401822.