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 0x00d9b3a097855dacbb5c86c8d6e09135c5ffa2634a06e2cccb5f2957548dd250. 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/822fe15e-9be5-4800-8263-8e590b7f5628.json and https://artists.proofprofile.net/proofs/artist/822fe15e-9be5-4800-8263-8e590b7f5628.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 0xc4ddfe1915568ebe66277308809a9fd5267b194952218353d75a1ee47c7f246f. 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/JPS801850393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97925baa9d7c72a719052df5bb8fd7f48dee37b8af3d788f94688234358dbae6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPS801945308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075680d017b1f5103d2d445853faef7232b72276e05cf5fc866e3ec038e126f8. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/JPS801945309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe086a2bb460df8d5dd7233b5ef9275da98d517afbc5145e3c81cc7ffcfdb8183. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:49Z), 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/JPS801945311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11074ea4ab67340c53692302b94338c30ce894831fc2d7074d69b701d9dc53ee. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/JPS801945312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0824f66bdb7eddcf75d4b4ab33d4456347561af4f87e3a98e01ae95080d89c70. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:26:29Z), 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/JPS801945314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa101b61a85b2dfc5b09cd1838a2880175a8a6cf1cdf866e36836893450dd9bb7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPS801945315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa6e861e5a8800ef2e8059c5713decf62dde18ce2eea55ebf630cdc08ba8a6b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPS801955805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c99b339557ad95c4d401d14c66d231c64a2d09fe0f18b7dc710dfc60e32ac33. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:59:34Z), 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/JPS801962223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c21bf151f343eadfbcc06d405462860a087b6f6d9ca48878a8a38548536953. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/JPS801962224.
Live 2: Anniversary - Centro de Convenciones
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc3c842cf8b6f155a10afd7ab79c675cec23b574bd5068ea5d65a131141441f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USJE62004093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83aca00e9736bc1ff16c8faf4d2156cb549cba7446044de9143a1a6698e80ec. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USJE62004096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086d6f0b1b7683936618c327f4bbf0447c45b51d19402fbda923670c92dfc2e0. 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/USJE62004090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f53efef2746a1a0d51216390a8f353184a61fae5ac7bee4296733007f80258. 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/USJE62004102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2091a9c78dc584dd9b399a8f658836e9d34e38702878cb5a91a58a9ccac87082. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USJE62004092.
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 0x53ce422db6657f29b3f9d5218c32eb41b71b31b25a2a698fc6c119ced5a51d23. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/USJE62004094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14a23a82ef38b874058848db1014b30a7d19ab71b6c53e69207f1c755711f64. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USJE62001167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec16fa0546b1cd4d673580bb14ee2a68c111dd30a1ef9461963e30161bbf5fd. 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/USJE62004095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed29a44d6eb94aa6dda4b590479d2d6cfe02b6b40133280c2e14d01d0a13e027. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USJE62004097.