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 0x23aa8cf87d6b7800637b4111a4f9bd7c8fd65aa364c435815a5531a8e480172c. 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/fca41539-07ae-49bd-8ab1-15a93add7f58.json and https://artists.proofprofile.net/proofs/artist/fca41539-07ae-49bd-8ab1-15a93add7f58.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 0x1606a98064864bd35c7a33782611eb4d8a93c34c406aed20e6dfc76895d2297b. 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/DEUE12584851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb12f39b657f0fbe4399ebfd191861e885fdf76700a4fb71d7ffd2b01163355. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/DEUE12584852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b2b647186d8e1e5dfe431f9cff1d6aae063f0209f94f014c396857fe5aa562. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:09:29Z), 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/DEUE12584853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee331ced75e44621b63552ad85982cf61070e2ef710ebef0feb82e5daad4461. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEUE12584854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4495e883908727539be4ee89fb75fdf75c08bdb75771d33393786e361beeb0. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:42:55Z), 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/DEUE12584855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbea254fb0ae60a5083cf4c91c81a8aa66706b701e72cd30f75e5c09cabc628. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:47:09Z), 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/DEUE12584856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68caf01316519136bbd7ac741bb00d41af1d1aa0b40927a5d9bddd2dca251853. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEUE12584857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9fea609325e92e2814bf59a28fc4a5901425d4e201b602ad79ab269cb98659. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEUE12584858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada848ab7eb71290b3c0ef2e225e1eb9c7eebd15212714a150910aa98958bc0b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:11:30Z), 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/DEUE12584859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede718c6c3dc1614eaf3a53be85096029c0ed5673c9313f712063f858400cee4. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEUE12584860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5473a0484a96921ae194313e008eb635f5e86bc121d11ef09bf6897463307c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:09:20Z), 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/DEUE12584861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f983b00d51c233862f2aad3be87f3855dc50c30be8bcc168a9a377c3c763c0. 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/DEUE12584862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e95a37ce88fd48d8f7c6030a4ceb124f6fa0a5affa9dd63da5f2982de4b527. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:36:10Z), 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/DEUE12584863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2940af18da2470fbb35bcfded1ac0ce36639d8aff01904e71d30e0f16075781f. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/DEUE12584864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3824f5c3fa22dfeef514ddd680a7066906836a5967581bc0201c9dcb9e5691. 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/DEUE12584865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5651b321d0d3e9d3a2759160ec7e71d83c83a323353e17907ae30edbd15e2c1. 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/DEUE12584867.