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 0x1d1b95a8cc15f952e73ce61f824ea62e4db962255fe77907cf40bc1c493ed4ad. 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/bda56ff5-8382-4b1a-99dc-f78437d238ed.json and https://artists.proofprofile.net/proofs/artist/bda56ff5-8382-4b1a-99dc-f78437d238ed.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 0xd0be8ac6df70c87f148d39bf3d6e81a2ca36c8eaea66dc6a9559e54ea3aca2d1. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/SE7TY2501113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e750bf040b670ef8b6df338c021444a03a7b4337e35154406f0f34252d44b3. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:17:57Z), 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/SE7TY2501117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87575c72a720e99be5650997712a1e9f0386d2aafeef87836839b5dec755bd8. 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/SE7TY2501133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80d675ade484cad83d715bd8d9a2fee0259781678db53e1cbfc03c7c1aadf1f. 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/SE7TY2501145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ed7e10e5108482b6d28fb9dc9c2030fda398431f98ea9d8fedf6861d27450f. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/SE7TY2501157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807983c91f7d845b4e1fc864b253bcd6c87b0e6e9bdeea8cce7a8301de2934a3. 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/SE7TY2501169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5869e837d56749e44a8bdcbc5013bb664090b82a3e2f9f6dd24fe2461a3e500. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:22:17Z), 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/SE7TY2501177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c619157144192621ba33e042ea60e9c35b152e9da759195280ce2f426259d8c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/SE7TY2501189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008d5d507c7155717b911e68873eeaee590c9c79602b1f14bc8964de48339bca. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:18:49Z), 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/SE7TY2501197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b2e563e4ae91fe6a255a20007d82b1aee7b48e97596b9c4d5df71a138e2313. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:48:43Z), 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/SE7TY2501209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0f0f5a56a8e5e5d6942ba3eaaedb3fbec33ad8c4c639273bf4dba790ec3508. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:43:01Z), 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/SE7TY2501217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e85d55de28bd2dcd882e1aff8e36af099f22249152b1a0bc8a8c470e7b4a67. 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/SE7TY2501237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcd56216fdad3ce55a81cc373e4100fe3361b33ac491aaf41e43e00a6b427cc. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:22:29Z), 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/SE7TY2501241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc024ff81460ca502c9400012ac7b13260608a32e834c854a1bd87817c2085108. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:05:30Z), 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/SE7TY2501257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ea09c5edc553ab6783f803bc51e7b90eab86cce23b60790550590e9ec993f7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SE7TY2501265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a7fb730dbdd708bcc5f4000cf078c68d033f543f5cac86ef9aa2a8ef8de041. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE7TY2501273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ca08bce2a35e2f055497a75f2efedd6cb81675c245846d932406a6501e17d5. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/SE7TY2501277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0205fccabb03e9ecac8a6caa5b47a92faa0521c47d6e03b52984c443ce74b556. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:28:16Z), 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/SE7TY2501289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1ba7e13459e2f0ff5f7bfc4168270efc6caef8632d980059814de3a96507d0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SE5IB2297410.