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 0x3f009d17c2e2fca30ca9a7f2f8429d97551adbec38ca96a7743ee5fad235613a. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b6f1a7c-344c-4ab6-9623-8fbcc1aac052.json and https://artists.proofprofile.net/proofs/artist/0b6f1a7c-344c-4ab6-9623-8fbcc1aac052.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 0x557cfb76edb6f39d695eec6f10f02be9138824cb8ceaa100b83287601df616b7. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GTA012400193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bdba6d920f23090a72f9b72bfb550786734675a2a28bac97ad62ec429fb5d9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GTA012400194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4cd477614a2a6bc4bafbd836fcbe1acd41e9961cc16c57675d0315d4b2dc99. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GTA012400196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6912ca8c367382bc6f551101be9c8b9a197ab394c220a7d6bf23e36c50857baf. 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/GTA012400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d92f542df6bab3b4141b99084ea537db63ea3b01af95fcf9c927a4bad0c1a41. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GTA012400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2e44d419716e4512150ef6d64497959825f7b6af438dc3dc0c0179faf2ff68. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:31Z), 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/GTA012400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b67b7222e1d4e5ea9fade499b60300b34c37e9c91b7e88fed17a13d7443a212. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GTA012400206.
World Music Guatemala, Danzas Mayas, Mayan Dances
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2142bb9b9742beb18197c61215f16997e6a9a0d6748aeabe8f348da076faa04a. 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/GTA010705317.