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 0x7e2ec24d5abe93274755c8aff3ee1cce9131526cbcb5a1d89e61759b7a16a6c9. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0043b188-7d18-4a01-b112-a771b1c3f191.json and https://artists.proofprofile.net/proofs/artist/0043b188-7d18-4a01-b112-a771b1c3f191.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 0x1e804a7bc9da6015a3f474040ed36246fe40d42ef07dc24aceadadf0f0b6cdce. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/UYA130100159.
Canciones para No Dormir la Siesta: Cuenta y Canta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204e74e052faa4667c79804d62433664c407b42b82a7161fe60ec4fa095bbab5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UYM120500401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdfcc6234e41e142d5b944866a0ad5790a094df1ca7e68414da6a12de634e9f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:37:07Z), 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/UYM120700657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad1b111ee1d8782cb6415e0abc8ffdb1dfd55fe2b6fef81d1f4c9ba766456c2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/UYM120700658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d9ab9b0a529f85ed3b9439fbf07233a7524c4676893ddaaf49b9a2d97f47d5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UYM120700659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdc068b583816d6b2a9c2e00f82f9ca839558986f6b3f3571b76725db8cba02. 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/UYM120801288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf39a9f0a4c35196ef6efd9d85c09848338f0726500d5e7971901d886443cac. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:46:00Z), 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/UYM121101253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7dac1414d65faee4b753cb3fcac21981665cafb73635a2b7c85925bb3d53f1. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:56:31Z), 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/UYM121101255.
Las 100 Canciones del Bicentenario, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200a16ae942ab779c8554efbd331c25855074237690d3d324319aaef7b06ee2f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UYM121201059.