Cayo Coco is an island on the north coast of central Cuba, known for its all-inclusive resorts. It lies within the Ciego de Ávila Province and is part of a chain of islands called Jardines del Rey ('K
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 0xa0419225fd2f08d522f34be5f82ac5bb61f148d21d0592009bac2fe75b214866. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3582506b-34f9-44fd-bc81-65fd18d54de9.json and https://artists.proofprofile.net/proofs/artist/3582506b-34f9-44fd-bc81-65fd18d54de9.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 0x09d5962c43b8c980ac4065647965944f78b6f61526feb88719826f2c15251d6b. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZPLS2131590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a60703e3548549d0c3da5bf009993846dc983c93f5e6675cb60dcfbe493ea6f. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:06:58Z), 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/QZVEM2329179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe006b485c7c048240d394fbe9a4e5a27e9a9934fb616d9bbead35d176fab5fd6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZES82351959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e15bc4b643ad4f4c72512797706467fc4d61175331c93ad2480168cb74dbb8. 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/QZTBF2399101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0c86e84106f2b449910bcecf3b4f65b81224447ecc0994f737568a29fc836b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:56:40Z), 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/QZK6M2459104.
These Deep Dark Woods (Abandoned Recordings)