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 0x76f4d8c9b4cd378e51ee48a88094e0e231a49d17616860bb24cf595b2778e38f. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e8fe2e2-250e-4691-9fe7-76660ca8d811.json and https://artists.proofprofile.net/proofs/artist/1e8fe2e2-250e-4691-9fe7-76660ca8d811.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 0xeb02851aac31b2f37c66c2db000a29fe5b3f003461a435b16fd782dd1434f6ca. 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/IL1010102285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edc262769cbd3309155129958f1b4f0438238ff298497670a0f921d80acde20. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:02:55Z), 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/IL1011097856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3206c098640bee71c0516502b1fbb8a91e156d570564b0899d96d8f25d333df3. 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/IL1011097863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd112d003ad7f23a9d5e84863a86ab1a9a776029ed08c5fa09b22758b0117350. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/IL1011097828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba7fe2a419ccb322f143fa75bea65b6911e75b3b5dc7e9f5639ef733d944f4b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/IL1011097855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033d1a5f2dc2ee9cf4f6323b506fae45aa3f70a611d0bee2de9f3f9bf499a9b6. 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/IL1011097829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df6bc63cd41acdbd1f4a50c99e46ad0b6542c070806d384734b2b89c58c5d22. 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/IL1011097847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ad2823c7d2067f85fd24a548e32d141858e1fa1bb0c772852ba96a68d3e018. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:26:58Z), 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/IL1011097830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2082849b9bff9d7ff283d6b446e7c6d0ba194b785567a958f19b5b6a6ce9ae2a. 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/IL1011097839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a2c5ac9b2dab4f9167386d6e86a2c3358bcbfa31107361339788926b6f6572. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/IL1011097834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633d9d06a2f2aa7d6e86505991ffb7a901fb7ca6289490eb2b67d601b47225b6. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/IL1011097831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab249b5eaaa6ce1612774d1b9ad9de7284b5b6925a56e3b2298dce2cdd38dcbc. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/IL1011097848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66530410d64e344e0cb0e00e2b6545b64a84ecde156814691f83c676399cb8c9. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:15:59Z), 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/IL1011097845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d40305786221fb0e0bc0f4aaac2f853cb89007ead457720c9902a5030929bb0. 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/IL1011097821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b01fa5c71b262022b06966dd7f7c6fbccd6d66eec07443a72d4e19100335a5. 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/IL1011097859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dfa01c08c23a1c1649eb1fb5ded897b5a25cac487aebef473c1be884c3394e. 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/IL1011097827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b348e8cd5eee72d6e07f977464464304b3b52e489047d42775d412aa4af0b8e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:22:00Z), 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/IL1011097851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95029653101ffb1c27f9e731e00b142a060028b64dd4940bd53cfe6b57ab957. 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/IL1011097864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaa40ec5f5e83fb1b1a03084d8479567e6318749a5b35c93841056d7ebf649f. 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/IL1011097866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4929a4fe46375a6d563ffa450168cf2babb1ed94888b70f74c9057f3a266e96a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:17:55Z), 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/IL1011097836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e40619b73a7005e539776468fa28aaa157f89ecb5f5c4d8f702057c342cd69. 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/IL1011097840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe1bde8ed158dd9202996d16baa587d47d1f301f8b5608ffd5db01e7394f8a1. 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/IL1011097865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4236534db080f13bcb5f614a1f1e48368ca45794f30abfd25920bf99be57edf4. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/IL1011097837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896bd37300225d0f395a6d66080f3a157764dc6a026c68df58de20e9590c53e2. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/IL1011097826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3686fd038fb1e1b35df72f7f064c0bca3e5db66523be4a0cf027c6bccb4cd720. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/IL1011097825.