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 0x656c03880fb7377aa91fbc0dd93671c36479a504bd02ec684c753da9be1ed086. 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/bee5462c-3d49-4b76-a08d-827449029ee0.json and https://artists.proofprofile.net/proofs/artist/bee5462c-3d49-4b76-a08d-827449029ee0.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 0x61bf461f108c25901eb7aca4b15993ec9a0be81cf8cb3ad54fea5863a316b4c7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:54:16Z), 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/FR2X41984154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa507d31efeb7a5378ef8d450479289f0b5cef4e2e02bc0cb96b81f0ce6d517. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRPJQ2100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a5dfc699a52f2dc68317192694056cb771b2418f9659461e108dc460d10308. 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/FRPJQ2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf667206eb7c56dff4a68d9b009fbbc781845f55ba351f26e84c70cff366de663. 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/FRPJQ2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096b080f1fa9601a587bf9c9d82c85b32924759cea577bca2559dfcf63ee710b. 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/FRPJQ1501740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa507d31efeb7a5378ef8d450479289f0b5cef4e2e02bc0cb96b81f0ce6d517. 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/FRPJQ2100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681e788d4793c26a288ee1a3bc3367ac78cad6bf0d6f14c038bb3b2c43ac896b. 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/FRPJQ2100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f11642fb2393179f10718b72eab9a4c9036ef9077d187cb72a5722e9d76165. 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/FRPJQ2200330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932ba84aa26d7022713084f7e857fd7011ea26e102816f1bea792bbfe4e9ff5c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRPJQ2200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32288f28164136d4e592d505f3f7f97ff3f91b0751a394817b9712ff9ed581fc. 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/FRPJQ2200630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddfc0d9c82f0c4d8b8c41cc12b66e80a94fdee1b68527f64065d0d3fe144d97. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FRPJQ2200480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f11642fb2393179f10718b72eab9a4c9036ef9077d187cb72a5722e9d76165. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRPJQ2200330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932ba84aa26d7022713084f7e857fd7011ea26e102816f1bea792bbfe4e9ff5c. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/FRPJQ2200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32288f28164136d4e592d505f3f7f97ff3f91b0751a394817b9712ff9ed581fc. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FRPJQ2200630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188484455713b8a490e802902a1ad2a9891ace58cf815e18fedbe6d2a482496d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRPJQ2200660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd5a0c4c6bce4cba2de9f4b90ac113f3397e2fff7d43647cf166614aed3973a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRPJQ2300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc02abd07e67bb2e3a9be8daab1bd35bc1ba28e9bed9506425e39bbf56dba13. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRPJQ2300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc047564c65a7aad1ef701e00fa85b195f39a4f800115847bcbd5222e71cf2a63. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:23:46Z), 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/FRPJQ2300420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3c998afa8d272afdebd61eba19b86761b1611e716b3c8c6097ac872cb071b5. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:04:50Z), 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/FRPJQ2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04d5a62061b773902c68921a9cafea9eded803bd1a3cdd7841ead0312dae153. 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/FRPJQ2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d6d9a78eb212d209505ac1afeac973f7b89ce44d4c8f771d8d2ff2172eb2cd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTB72462661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b50980e6c50323dee9f9a8d7b2e52869b2ee2985aea9769ff8251a95524f477. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QT3F42408158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905e725968ad3e73d5ef4e481dd2690788ff10ba163fb4b6ca28887fa3ccca9b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QT3F42408159.