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 0x04370f11bb7c10b74fa6acb329619fd21562f87039a5a805748bc83a70159962. 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/a212cdc8-5d8b-4ac6-92cc-af650818de84.json and https://artists.proofprofile.net/proofs/artist/a212cdc8-5d8b-4ac6-92cc-af650818de84.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 0x6b90a11a143d9a81787b4fb05f215cbecc5b57ff3da7cbd7c21e69182bc439be. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:56Z), 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/QZES52479913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8f3e96306aba431663e69b4fb1c0136595931262db41ed932ed2093bc255b5. 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/UK43Q2286715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31323aa6d8e14a1f659aacba35656760c5e939a2da9b7dfe7c93c7ede042d27. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UK43Q2270336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638907bf03e00a7368d2cc3762bd9b98149624173349ea255faeefb198d18cc4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UK43Q2299742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1839ebb418c793408b76ea498440f56ac0c4f96432c9444e568b832e9895086. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/UK43Q2257385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153c0b74663caecabb6ca3831854f2d41c9d2cb58cd27ccaecb8d2daf27dd58b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:18:44Z), 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/UK43Q2330332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1b2a231d954e52f7b708ba3c6464fef0d82cbf9afefa38a2fe55e50d5b5a66. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:20:51Z), 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/UK43Q2343891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef1ce2ce47d4aca0f42102075dadc84ccd5dc9e75f77c9700245cd4e94d94ef. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:18:18Z), 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/UK43Q2351327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461ed81d21915d656fef5f85fd71f95999398bace4e9e6f33fa02a0537545e19. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UK43Q2337164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e9278f1b752cf99529822e159e52e7d89fc922efd015c47eceb8d4b8fabf84. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:31:26Z), 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/UK43Q2385105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644e9f5448b31c67a2bc41382c1da83c3dc10aa8a7360303124f67a1c4fac720. 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/QZFYX2462462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0a383aaaaf781803dc753e0232b2dfa6f82a210f6ab72d2dc9a94a403bc78c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZFYX2462463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87b3db22d43915062f93b70de0bd14c5ced3da13cf50cea182cbde56b44827a. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZFYX2462464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8becb8221c4b9e55b6eae532a3dcc72fbb9668d508834058e32945a9b7720cc1. 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/QZFYX2462466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf90c1c6f6dd698e79d454ae8e6b3e9fabc61c942d7d8796f6661732b6b6786f. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:06:00Z), 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/QZFYX2462470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80454c355d6d6677f909aa54162d1f62dc39879e461ab413315da8d486669fa8. 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/QZES92406862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f996153236b10d0e03463a9fe98ddc4de32816b51fc39ebccf28fa49da163dc. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZNWQ2468325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538f902ac509d9855721e0522dc6ff05d04177da23c8f00f097cc5973b2ebd39. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:06:25Z), 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/UK43Q2482855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a18cf07bc0622dc2d1dcf914db194d3db782c1d8e03baa0e5f2382b44356860. 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/UK43Q2432291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10157aae3eabcdb8f984343ac45452873f5c382d116450c868a30e519465a660. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/UK43Q2468675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5406f01432429b50f2106155633c5e275aa435ad589e14777ef4087e44c387c3. 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/QZZ7U2450304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf198fe44c7971d563d9587221741f9cb1266911498fe107405b5303d6effcffd. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZHN92591809.