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 0x6e9bdda4e1451c1d233f5f54109de90f33b9fa9b2e1563454e971ee4490598d3. 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/f1056e78-48b9-4ffa-9b24-fc655d2538f6.json and https://artists.proofprofile.net/proofs/artist/f1056e78-48b9-4ffa-9b24-fc655d2538f6.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 0x0849dfc4a91df462a401f00df8e46254ff44e3524c4d521f9fd13bc341777ae0. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/RUB731425405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cb9a38e24eec9155ac6221b6e2e21b1272553a471f83e6f3196239a2b5d681. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUB731425438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe0e6042084b4ff42ad31aade4646f08175e88b7780a70785aa5365adfce568. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUB731425412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ba2178f3fa06370416202be187c1921e476c9249fdb28e73812c0fd115a5d8. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/RUB731425487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ed4eb22fdc0b872ef87c514373cc506ab79cfbefba89a20d9e53dd994c54cc. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/RUB731425421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb0a639f52f19f4fe74a715aed1845f2d331dbd719e61e33c3bdd58b92533b0. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:03:06Z), 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/RUB731590629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cae249992bfe8cdb7de99f8e7ce25bf50fe8dfc7ab3c0801b5e15ac986f1513. 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/RUB731590627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ada0a160879a8e5c25c9c5cb04736b8b9a561cb3c0e775329083468f2762c8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUB731590559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cf00d20158837f00edf454455b3ab655a080fdef76c57a59eca59536f96edb. 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/AEA2W2541860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0991c231021e27ad01f1e74750fb81030ceb8dbb3bbf9ef375d6376be9eb36bd. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/AEA2W2547153.