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 0xf28e60c5b2b58da0e8cd289b6607be0861c77030a3f79ba0124f545909e2d421. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb12e62d-3cc6-4546-acd2-b03605ce9d21.json and https://artists.proofprofile.net/proofs/artist/cb12e62d-3cc6-4546-acd2-b03605ce9d21.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 0xca50b535b002f290c9f3370c55248589a099a2d4ce4a730b5b4bc132f6b03af6. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:45:00Z), 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/QZNWY2307417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc77889c671c4e15f18179ad8270a6541ed3ab91b8619265da5b795342d862b. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:26Z), 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/QZNWY2307418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc294a6abeb2a1d913739b53af97e459ec6b07ffd52168abd606fa9c009b470cd. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZNWY2307419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278affaf12d0fceebb898edf35b9aa61fbc82fb71e864ee6884bbf1a82469220. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:02:27Z), 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/QZNWY2307420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bd294eba7a2d1b3ab33dfcee3accc257b9547d281ba1501e3c2df0b8a1a563. 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/QZNWY2307421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44deeca2c6072dda6fd1e3fdf475775c6c4d65aa57edce24c9733ff550893f6. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:52:24Z), 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/QZNWY2393748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c32fa8665d7553e1347d1b47af21c29fb01d1edc26325a20cee7424672f935b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWY2393749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf210ded2e431c700608c4e986b986ae5706b6971557f8fa34ffd7efa6fb52111. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZNWY2393750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff61a786ae4f83844361e5953d84872991cb24d9f42b4e8216aa344e28b3efa1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:25:29Z), 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/QZNWY2393751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47500ed3e411a1eb2d5a5f36ee15bc9de67bf0ce3e8b1ac910e0b32ea5481d6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZNWY2393752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eff7bae1d13a16ee6d849e4b80e3f414071b6cda746297e1e4022fefdcdfc54. 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/QZNWY2393753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b1fa6057995e3c1c561a1265b505029028f557f273e12394c686b50dfc283d. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZNWY2393754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaace490873da4a51d33848eba736a77416c7aa6656578f6c011f89cf9594bb. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZNWY2393755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f424a61c7e6f39ba8c24bc02dc88efd8ef0311592dfc2f12e3f080b04a6b5f. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZNWY2398523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d7a37303094359fe6f3a3d09f04b286aefffee69b929611bf1cc5d7d10a1f6. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:17:59Z), 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/QZNWY2398524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8848979ca0e414de4880627c135e3df664682aa6867338374978573f8ca42fe. 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/QZNWY2398525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33b1c3f77f47fa58119a8450b9b9d6fa9de1a656dc83d80b752f44599fe65cf. 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/QZNWY2398526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aad1b0699510d51f566b45f29c08a27d4416f8a48f773f35afb10c6bc84bde6. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZNWY2398527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee14b9c944acb2c27fcb3ca94c4e7a53917e8fcdee52ff7dced7730688b654e3. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNWY2398528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff81b87198b8bbef79461e8b8aca30c40101667feea159f5055070ee4ab0ca4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:29:56Z), 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/QZNWY2398529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec22c46c246eae4f46e78f8b88e180fa2d7df99a9668aad505073601705a8e0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNWY2398530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3ac383194425a8bfb8067c4aae89e332298c7f94154854def1cf29c2cdceda. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZNWY2398531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bb5c14596846a102b915686b6510610da6818bfe88b1dc0f342a29e7d33ef4. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZNWY2398532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04c4c20644617ed5235a356a2fa922ef0ac5e70f81004b4da0d99d4e38594db. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:32Z), 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/QZNWY2398533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae80ef5b94932f3340a13d21b2445aa2f3e548e75c766147eda1d0cbedce8dd. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:28:15Z), 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/QZMHM2493098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f005f2af768daa738d5a911a717cb2e205f7075c7316a18dc0cb6ee9c7fe8b6. 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/DEPI82410182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53783fe59c402b91bb77582d0cfa43607f3f3e124bb5b2d5909de699855d0d86. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/DEPI82430109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b710972918957c0a1325f2606d415041bfb377604286b54867cf92c1e4404f. 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/DEPI82431056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da7a5ba63d1829066ca7606e4f2f923a74560cc4453b5062b7d5af7c26580de. 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/DEPI82431057.