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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7448664090a3b97ad9c4990203025854b7bbe03a11b5930dd2d30d304af79951. 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/34d80383-7268-466f-be86-c38889003edc.json and https://artists.proofprofile.net/proofs/artist/34d80383-7268-466f-be86-c38889003edc.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93b79822997a6c399f5d81012876031c4bfcc740cbcfca3e7900e95589c83d0. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GBKPL1134804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d48fd8790e12e6e83df57c39afdaf09c18199946015baccbdb37f8d902968c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBKPL1134810.
Don't Let This Moment End - Guena Lg Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf874e8c0072395945e974896adaf4ad68f0cd593525d742cc94664fbe8d7529c. 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/ES5051300631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704d21414306f3d1db51d5aa4d68c37e30153dada5ece14fe93dce8d665398b7. 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/ES6101801151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4660f34ad1e8993e569c4350363cde13d8f56ac3e67c3e247a976586c376ba. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMFMF2344890.
Searching For The Golden Eye - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bbecb5bcef2d7859edd73a89a13ba345cf63b696f873fd45f8ac3902287e91. 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/QM6N22498801.
Searching For The Golden Eye - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3870807c0ce2f2128fc24a2a7e8c9d74bfeaba7941697b0eed1f0546de473fd7. 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/QM6P42426724.
Sun Rising Up (feat. Rebeka Brown) [Acapella]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ba599ef87b3daf7d97a4f4051eea0a60c6c9d7872a8a6a4da07fdeff6cc779. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/ES8830410113.
Real Things - Carlos Martinez & Uriel Ramirez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e912469316eac3e1702963989c12e7340a9cba0a79f0d983175fe1252da2ce0. 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/ES14C1840064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb84ed17829d62015a5fc4d0f5a8bd3508cfd18d07513416dbd49f408815f7c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEW871504805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafef91fc42eddac041bf993c6d48750f9663689fc0c6ab49416b828b0a9acc06. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ES14C1540074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b0435b6b27d45a76d940d226fe19ed9b41449b58f6f027201562bf1f1f5507. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKU932500761.
Millenium - Pastis & Buenri, Ruboy Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e7a88dedb0c919739b763e6f0223db5a0a19414a104292d4bd30a0d23b3159. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKU932500762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfee05875b996f34ac2dc25379e35117fbd1ba3328e7582d26b4c66357bf11de. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUS21110005.