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 0xed8ad461521ce182b145376c32c3eb53fac45eaad7997fd8ccfd48867f6ca45b. 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/81870b83-d595-4e9b-9221-ecda933ff949.json and https://artists.proofprofile.net/proofs/artist/81870b83-d595-4e9b-9221-ecda933ff949.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 0x5af60c25dd23b76dd41719aff6a483186e99a0c30b088e33a5daceb85dcfdffb. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/USL4Q2349805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc115996a5cb2a8944b7171532de442f449654d9aef113e5698a73f2107a8842f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USL4Q2349806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf39eb65eb6f950d1fc2b123465bf0f8ae3673e75ba1dd418724b133f0f5b7e2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USL4Q2349808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa882b6bf328aab48692ec576e8c7fc90595cd994e035bee6c12a10862e48afa3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USL4Q2349812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148baf225ca39411c6d756d655d06ab5d8008e636f73d5be184c0e78b2e218de. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:05:25Z), 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/USDY41953098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485ec5e07fb1650a9c696103e536db53b0c8a3966e7838368f351e04bf737f8c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:40:04Z), 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/USDY41953102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a14fe58724cd5f68593221386e45ccc7a1ff4f96650b2fdd6cc5bc2a7997a5d. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:37:03Z), 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/USDY41953103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bcbdd8aa8b8bc2894699e54b9ceb0755fdbeb8cb52331638b398dda67144b9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USDY42256665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09af150e500d3fd44922bee946a664ca8d7be242608e70f92cbb1592e980a358. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USDY42256667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727ad0640b768f4e1497b03f05ae573108e91adda1a30d16746e660d5e4404bc. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USDY42256668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7df98c4bcaa69142ad78a2dbf1c198e2b5a65e0d65b5116f9355a6e3938f8d. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USDY42256669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f27d34c16bea8b40a7f7cf654763132cc3721efb8ebd1aded196986d7fe7ea. 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/QZTBC2482438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba6fb1a5d6b059e60745bb297502ec760266284a488f86b07de23095396ead3. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZTBC2482439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5563435eecf44d7e04908f505dfd543cff600ecbd9d8216b2f4bb7a0d7ccea7. 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/QZTBC2482441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f032e4b8cdb88880a987b5d2ffaa50a79a14ec1d24d227220df4d27fc01c459. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZTBC2482442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7502f24884a244745533c552075f475168149d2fea53fc1e9688372bbbed9c4d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZTBC2482443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312eb8f3021a505f9092b27d72876e6a380080bbfac4b6cc8dacb81de0abf460. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTBC2482444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9014c00de478e1a5ecdc5fd60714f1e7c99b6c872c9e44ff7580caae8c1c242. 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/QZTB32474783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a0b8597cbb59bf47e13fc84c84d5756ffc9be9e330b83d1497d439ed8bacd1. 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/QZTBC2482445.