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 0xe1a4f967fac6aeac73e9345282cacadad580dc6c2a1d0daa232f0480ce30f75f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7d07f72-0e9f-45cf-81cf-83d16527fe17.json and https://artists.proofprofile.net/proofs/artist/f7d07f72-0e9f-45cf-81cf-83d16527fe17.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 0x4b2f4b8237a1cd21a8bd89c6f9c3d5826addf3a8bdac2d3c5879747ca20cb39b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/AUVR11002304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5ec9c299970cf6050870bdd4397bce4049a868147c469578388e27bd41cd1b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AUVR11002305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7460116a8b29da7f0ee2dad59b68a5bce0a3190b30de74fdba69bf78bf331d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUVR11002306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc682f9c8624b34ed622380dea1d6b3a79a61ec196b8c0b25337ff49f9f12f3ed. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/AUVR11002307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982f79aaaf935184893685cf4f254cfbb3d4611701bff04eac8554d816af617c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/AUVR11002308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5f3c084d0f950a9ca71a69cc0eb165816977aa172e1d37941f23a831a12ec0. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/AUVR11002310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c26bd557a89f717275363d62b008145686139063244918f78f48904cdaa0dc4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/AUVR11002312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafca830b0a5b2ecbf284169dd6c516ed753cf67a2e23626048310eddc72f3be5. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:19:43Z), 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/AUVR12103074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd7a853ff0601ab6f9f4b3f513287a53eaa1e986bd60736d743f37291b455dc. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/AUVR12103075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415592fd84833be639bb717d8c109d5450172e5159e1f09a3a85e10cbe2fa93c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:08:18Z), 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/AUVR12103076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7751cbc266695df2b79c65e185706140ce562f2c832ecd75b4482bf81561f46. 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/AUVR12103079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b9bb04aedb6b27446f8e4c035cca427079609adbe8b2b29e3eb278de04b11d. 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/AUVR12103080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d13ba0821ea5a56137c74ccc0cd871c3b8680560064462830ed89840af3be7e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/AUVR12103081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa574834975d996d3f7274262a8783097ef94fc759d12e1855f6eebd8a3dbbc. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:57:32Z), 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/AUVR12103082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b42808c770592665cf65f022fb9f941d5e6bebbc890a0fb3f66213897828b51. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUVR12103083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2032d5bd362c06a0350ef0d089045c4cda73851dadc126e4e6a8cc502d7d2b3f. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/AUVR12103378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b60f662c2f97c6a4f00e2abe67c7ff990493588d6f449900780c26e394993e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUVR12103381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155bd75c5261dfdb45bd73361301f04d06b4872a9914276cd1619eff2c219694. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/AUVR12103382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb328f91347c66a2eb9053dca42ab0203aa51cec85c34ed420a6ddb790059638b. 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/AUVR12103383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffc3d1b2a4a08fdf376e46704d0974b90b91b1e93f2be47b1831b2b3cead14f. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/AUVR12103385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3db51a088b257edf787272e927ba9f67e824725628a1b61255f212fe03fa5d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/AUVR12103386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cefac583c5220517f02cf08b882b974974998f998784844894b638a4cd775cf. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AUAQY1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c68f08001a94191e21bad53e9181279a8986b6470213e18ad03d27cd06812e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/AUAQY1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff83e241b665be8b779cde769df56697b7d7358d3b8bd38c1ccb4e478a94ce2. 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/AUAQY1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c972ea6fdee00126237556a9b465fffb6dd4f82274226b4233bd1a9409642f9. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:18:45Z), 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/AUAQY1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396b81a25aff1022e8dbe5a88d6bec585c72b8fb50dc35207f97beab03f1b6dd. 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/AUAQY1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b979fc08ef7946f3d4ad040ee0ecf3f6ae18737a49bfb63ea0a5994bfdf0aea. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:23:54Z), 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/AUAQY1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bf95ed4719a41a34a3b619d07a71bc4be73a695fcd5cd83b02a19fbd43654c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:28:31Z), 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/AUAQY1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb004c6553ec7a65b0f2d5d2a3392658c5074669e23d61bf752ff36b2186ae24e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUAQY1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e7e15b51f02fb55cfcdef2294d66f486fbbf5bb8ceaf4a5356beec89c61e99. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/AUAQY1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706f18e718ee6d5774a1784b12168eaf119420ae15b69a9686f4d89b7d27aed2. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/AUAQY1900019.