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 0xe5ccccbdb0f3fdc5ed7f318b5611ee8b6163b675024ba9a00fa73f3912f304d2. 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/ff1e47d7-0fcc-4d2e-a5b1-b6411e1bc3bf.json and https://artists.proofprofile.net/proofs/artist/ff1e47d7-0fcc-4d2e-a5b1-b6411e1bc3bf.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 0x0d3f6d352faa24e3d5a2cced8323735ed9e82f4fbbfe0431631f85700a2a51ee. 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/USUYG1299748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1fb95eae02cf72e857efb7f25bf7291bc998427eae3820d449a23469345f76. 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/USUYG1045557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec3170db669fb44b10f4b47a2c920cb1a5bbe4764900800bdfe07b49bce50f1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUYG1045574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3b722f7ec6e6b92c7c10da99e6f60923c3c76d866ff9ff9490a5a4855fac8b. 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/USUYG1045575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23e13c95d545de11c2d7bc1dc251d0c62a9737afa2f6cf779e6d9c755df7fee. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUYG1045576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a9a547958ac68b701dc24157c69d734152f1782bbd63d27eb97733778b25fa. 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/USUYG1045578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22abb304ff669f10bd7080da8b3d77224b10baecab1c0052d9fb5a8fe84573e. 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/USUYG1045579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1750a617ee545141dd415256f89491169ac371a4d760a1e1e29303245864b216. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUYG1045642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d07e4b73a6d1ff739b457ffd5bbc7bccadf8a77bccbfbdaaf43407790e8e2d2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUYG1049580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb02f74d17c073e8ccbbd7b2b54e1125a2209d5b2deedee06bb69202f8baf004. 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/USUYG1049581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1097034d56b56377d045280367df06ca1895b2a921bf71dc74392796f9a40e89. 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/USUYG1045302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cacb8a39409c2c2d9d0b60d57158543e2ff728f176b831c970fa090f76accc. 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/USUYG1045401.
Deja la Ignorancia (feat. Mugas & Jabiwana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d7897bfff6458ab96ecc19166a76fedfe1b33022d3764845b37aa91c5f53b7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUYG1045414.
Good Old-Fashioned Lover Boy (feat. Doner_art)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e0787d6003863d722a95c7e55748472f541443371acd87ad5f422bf0bd2361. 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/QZW9N2216173.
In My Own Way (feat. El Madrid Rap Latino)
Cantando Reggae (feat. Farmer & One Fhya)