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 0xd34482ac14ceed147b033b52380a398a36153c5db066df56caa73743fc32627c. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68243f9d-d440-49be-a0d7-b3bb5e622cb8.json and https://artists.proofprofile.net/proofs/artist/68243f9d-d440-49be-a0d7-b3bb5e622cb8.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 0x4d451e3d366841caefc262f00d27149a277ea1e74e72215cee9837286046eece. 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/JP92Q2527940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51040a634c3d429af35b397ab1527507cceb7f0e174ac9d370d8cd8e1d524fc4. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:17:15Z), 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/JP92Q2527941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320a779839b172773a9fc6a09a6c5b81c5d497daad9ffa085257051fe8108578. 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/JP92Q2527942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb996f1902e24949b8323be591f8f98ccc881adcef4b6ca340d1491bf811674. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:41:33Z), 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/JP92Q2527943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f37b99c8c018713d4b5b96ad5fc3606d6c650424a896c6aa77ae45fcc81544e. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/JP92Q2527944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93a4bef00b1df73254c1185ac70972ba8066cba5f3c7bd2071f9a237caa9eba. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/JP92Q2527945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2a74d4189026199613fcb4f74118c9be38adc03293295c824b172a4682178a. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/JP92Q2527946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689e5ccd954d6d4a4ed22837b6ea7e49185b832b3edfb0e97795ba53d13ef584. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JP92Q2527947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e871df88d8773b4b6a2473186c16f6baade81f5b764b4fc454fe898f3322a9f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JP92Q2527948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49d87219ec31af96d4f66d6b29db0f0ec0c7b329e3658ceb00730675579c364. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/JP92Q2527949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90eb34a18684b781f559bcbf9a41895e26cbeeebe67c4c62d227c6986529c368. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:08:26Z), 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/JP92Q2527950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70598d3b1e9e15387211a893b8a49406a3107c87f1d1352b28939ddf24161dc4. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:32Z), 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/JP92Q2527934.
世界は諦めなかった夢でできている
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7808d1cab8d27c1833bd6e0d156ff23b6d3d09a5cba75ff91a51c53f18e3b481. 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/JP92Q2527935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbdeb250a521fce49e660b782e6dbcaa70a996ac001a9d0206b40232f9c8654. 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/JP92Q2527936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f8eb27fc591147f7c5f2feb777570a93fcd6bd37245a46e0beb6bf7b824687. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JP92Q2527937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa274de067634eea6bd003f13231c610c68bf45e3f1d0ea625eff17b7e26214a1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JP92Q2527938.