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 0x036ee12c28bd488dd27d01eb15db77f7688aa5af37baff06b3deb7b0a5dba162. 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/0532d0ea-c783-4228-ab7d-661d6c78dbb3.json and https://artists.proofprofile.net/proofs/artist/0532d0ea-c783-4228-ab7d-661d6c78dbb3.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 0xa02ce7e04533fab357c1e2ff704521fdc34863d6ae4467d620867166c9da6e6d. 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/USDHM1617250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad31f5ba2c1fdf52d12595a24a2f7bd9ad99ec1b1be4d154b2ddaee5e2d00fc7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USDHM1617251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b0950229e9492ca83ac9265ad2274a711ff9424e7361ce19a0b64db668223b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USDHM1617259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db092661ed1fb474a406cf616ddbc089b573d921cdbcd2cc4101370aafb4541. 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/USDHM1617277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaec7c1a245d1b6719e69f5ae59171e5fe0b8405707e57bb98e4263897ad6f6. 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/USDHM1617278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2db9c0b734727978a0fe97a800d502873360e2694618927136aa8eb1d72eb4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USDHM1617280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586e6bf5130acfb1348f243ee37df14a7e00cfd0ccaa994a436e8952167a122d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USDHM1617281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7933fd941af3868b956f64c586d7f7a2a1381f50c2c445bc66270503a962cf. 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/USDHM1617283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09284c9e7ee2ae3481511858615e926155be128512df66699dede26b35f6247. 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/USDHM1617284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96b82d578c017a6307cb4034177998307706b22f3675b401ca427a7c7b04502. 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/USDHM1913359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf1bb40285be0fefc01d769edd3c95b61457098cff977c4f0cd1476e5e194de. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USDHM1913360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7c48eca6bd89e85b53acfd4d047145bc9bd6fd14e47b3aa963d7238b6cf2ca. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/USDHM1913361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc033ce4245a2d9c69d970960540d9e72ba54e56978cce187d2a2177039bd9f59. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:46Z), 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/USDHM1913362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf4a343eaa2133b6c20286ec155d60ccc940a6b84046dbc731cdb3cac304ede. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USDHM1913363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7062240f30fc48f38f176b662da733baf1acbea91314f4eb2bb28bfe32a4477d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:36Z), 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/USDHM1913365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa882e1f1cbe3c49424e655e6dfa3dd1ecbaf15cde96b0754af5f382cb667ed68. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USDHM1913366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e0274bf0bcceca6f4eb5b65d511ca7ad7f7dd968a737f68df78ee160355508. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:29:27Z), 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/USDHM1913367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7545c3bb4ecdbe73074b98964914d31605f073f851b622ebb4d59d7182f160b1. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:38:10Z), 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/USDHM1913368.