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 0xb8e0771e5c2d07dff8eef00b919a66bdca3e299bac35de2beb77a85ab20e9fed. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe882435-e893-47db-8216-c2a969c6237e.json and https://artists.proofprofile.net/proofs/artist/fe882435-e893-47db-8216-c2a969c6237e.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 0x5f31ff4cbd738a9eca77842f65a059c8f28e1112cf563ff212d57ec11de553d9. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/UK4NH1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf83d79eb9588b99b63de89426079d06f50c1c3770ea58cc38b8709d2ec2fcfd. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/UK4NH1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07899b6ba8860271e299c7a864726b014761dc37f75289a9a0075ffded212fc. 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/UK4NH1700003.
Uptight / I Was Made to Love Him / Shoo-Be-Doo-Be-Doo-da-Day / Higher Ground
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1274321e8cb27fdabd16fb08a2a00f153df0cabb73eb73bb3089ffb0b4e6b33. 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/UKPJM1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1279fa8846c24c6ebe3301be9f664e25320268a7502e666f1ff487f232e394f0. 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/UKPJM1800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce09c00c7acfe246e57f78bc5bf2b19571cccb0ceb9bef9d992fc237d12cd3e. 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/UKPJM1800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bae8acbde02a0f440405c3a23a6ecfd33ce4410495dfafc9ae5b71a243a237. 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/UKPJM1800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6f6b689ed2fa8f52d6edff33cbecb6e43d5d9568d08739ac540af76ec21ba5. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/UKPJM1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f7a4ca645275ddd54982b95dfaa11d76767d4a9d56cb0ddcefd6e9ac91bd89. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/UKPJM1800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f537403f9f79dcad66d26b4be1e66e7e8a06d4fb97cb9885c1a26e53177382. 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/UKPJM1800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc459ac7945ed3ed991cb1fecf24520988cd398f7546598208d81a3dddf639f69. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKPJM1800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547005fab79424d46f1092f6cfd7cfb8b57a85b2af9b560d886e7458151a9f1f. 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/UKPJM1800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b793ddab1d9fb84063bcee8fd075be57f3476e4745fbedb73d192960283683. 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/UKPJM1800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f645df7f25d5741274f165a3f4e61f2a412ba7047e49e20323c8de28531a4d. 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/UKPJM1800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9988d9cef191a477045232c26bc13ec099db1419134f28ce175e1dddb24f6c. 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/UKPJM1800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583ad8fb6cf6422b17530fde52d456367796c48132d67689595c149f44f949ca. 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/UKPJM1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cbec5f961f87ef93ce2fe0356984128aa53eb77fe98413c4e3ed5e5eecf087. 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/UKPJM1800033.