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 0x50caccb5f0386209ec09c2a9af19b695edbcab4bb7e9cf355176fe7027fd3be1. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c96b55ac-7c5f-4393-8868-fd04a11a4aae.json and https://artists.proofprofile.net/proofs/artist/c96b55ac-7c5f-4393-8868-fd04a11a4aae.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 0x3066d18cf7bcafa8c74fd38fb6be796efbf92e3b770d44c5c0ccd428520a0602. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/US85P1214502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03f95345a434e61ac36123dd19dc14894ffffebb3542da07b41c74382c9c60c. 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/US85P1214503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d4214626a45ae5c744775c9652ec6e88261c1eed009f7a00e575a7588ebd2c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US85P1214602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4509ad15aa86254bd0b48f6eaa0fb3dfadbf60c2e1c720e25de61c9ebf742d. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:48:12Z), 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/US85P1214603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd23ad0bf54984908c6c255ce1742ec88e238603f322b609ee0f65b75181f58. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/US85P1214606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066e3907bf621d475628eb323b1059cf4c088b07588bb8d9f84f7bc3b7d5a02a. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/US85P1214401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5798e1819e9d34ea7827daef27772011cb09f93c6fa970ae6d2a6e60047c5b9d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:33:23Z), 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/US85P1214403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41743e5aff0b96a232bfb444f509775c7fbc565b50a50f163ba8f1825d2e814. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:05:35Z), 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/US85P1214404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526b6a546f6bc3253e35462bf7aab07fa3d3e33706e1d2f6210a9e3906983d1b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/US85P1214405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a14259a6b6eb5496fcf121b3b5ca490eb2643e98288c6bbbec8b2064d8f0229. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/US85P1214406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5719f840d399ba313712a281b9d9c91e160661e1dc8dbd419d13b5203502f5ec. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/US85P1214407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55a1545eb34453a3a81f76310f42c0f711143dcf48b355c2f3232355ef87815. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/US85P1214409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa478771e52c8fd9774a7488b5d76d7709394a127e1972d584d6288e08fb70a89. Chain 2 (Bitcoin): anchored in block 957674 (2026-07-12T07:50:41Z), 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/US85P1214410.
Saona - Gilles Peterson And Sinbad Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01c967a1b5c119afcbba34d0b31dc899e421dd9bc5fad72bec4234d48441656. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USDBB0610600.
It's Showtime at the Apollo: Best of Comedy, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c0f3029175834480b8f48e616c390966d6270866acf087dacc9b5209804cbd. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/QZ5HC1780709.
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 0x7139dc23116a710871523cb621532c4f906323f25352867a91364844baffb887. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/QZ5HC1786801.