1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x7d0573b1a0b646267185e126c7677a60faf96b2667e26877f03f2fd3d3ff1cd7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee2274d7-ce69-48d8-b0d6-cc0f250df183.json and https://artists.proofprofile.net/proofs/artist/ee2274d7-ce69-48d8-b0d6-cc0f250df183.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 → block OTSBitcoinBlock must exist at that height 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 0x3b91088eaf998b8ddd86cc5bfc04bde7a5c51c5ce02739d1de2236f3db5fabe1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PTVI12000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aa4e1815fca4a602a77ad4d5161d280dffaadfecbf327f64c0269ce674f571. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/PTVI12000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f76b4596bcc63967d253ae0156b3cb7e50f6555fd097028a86797bedb67520. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/PTVI12000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae087f4dd1b570d23eab31d5bb3957dcaef3ebd6cf113c78679f39f4bca167de. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PTVI12000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270391f41b3a4f4cbb6d116d7b853c56ce1e3b1403310c5a0e3f2808b9fa6df9. 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/PTVI12000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777c672074903a8cb8d76a22be6015af5ded6b3e8e5cbdb00432325134dda17e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ARQIW2501846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5feba49ec4b754dc099dc553d8277209fa6c8de434e156f6a4a98afbc15ecbdd. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/ARQIW2503124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19cd211ddc3ae955b837bc9d85cb438540d9b43738b7742451d555387078dcd. 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/ARQIW2504155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fc5ff1d8edaa83de502682b73956b2a20ec034b736cda5936804a3eb46a046. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/INAE32500647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45528355d68cfe0258ca79c903bd9ee170f7cef624e4f71e7f3407104c911f9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/INAE32501250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf4ed9899855aad502bf32d1bbbcbf1ea525804cddded212f2e26074a6ae9f3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/INAE32502393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67153fc50b4fe1b55e4a1ce0a9471562805ce39e045a38a58a3801315801c769. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/INAE32502394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4a701019b8783977fe7d7abf1d46d1517db9b3f7dc51777ad75fa7f82ebcec. 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/PTVI11400432.