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 0x678dc24a0c79c072e4ad3a820f2613441e15d260bab4beb4f10b112ca11fff8f. 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/89ae0b10-be18-4e0f-ae35-5a0d40caa000.json and https://artists.proofprofile.net/proofs/artist/89ae0b10-be18-4e0f-ae35-5a0d40caa000.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 0x49b7f0700c477bde085c32e2539c932563c40ebcd6d883cc71fb9602c6375727. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USHM21749749.
Ard Skellig Village (The Witcher 3: Wild Hunt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4af827f13e40cd6eb31d41ab0e653670c9d0a178e16f110499198a697ae866. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:23:04Z), 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/QZK6H2350846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a41ece96310f5e2440327190916a693e066ef4b798bfcdbb3aab05b97ea185. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZK6H2350847.
Ladies of the Woods (The Witcher 3: Wild Hunt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc736614ae7db151a0dddaf800cc4ca920fa1e94a0a7c2c4c460031690508ebb3. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZK6H2350848.
The Wolven Storm (The Witcher 3: Wild Hunt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fca8a318a40bc8b1d3d895f49020a79577fd3949cf4d20882699c732d4e25d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZK6H2350849.
The Song of the Sword-Dancer (The Witcher 3: Wild Hunt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89ef6e548b2cba50b2339dcbcbd1a8d3805a05b81b66fb54b2bf59babaaa91c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6H2350850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156db3e71649ac96b9507105c5373a0b5d897d43ae4c3e57b7b5c4c2914ae0c5. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZK6H2350851.
Ancient Stones (The Elder Scrolls V: Skyrim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2983d925845d3f9aea38ddf293bac1dd6a5e9ec25e71f79a81e8b55faa2373c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6H2350853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7ea73422faf9804d3207debc0c522bd7d42dd36ba605437c2e4cb249e22752. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6H2350854.