1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xed49e5d8f54ed45c2dade90ebbe6d64867dd2b0dffd88e061d96cc218ad8ed32. 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/2eb276a7-b56f-4a23-b6d5-064194d470bc.json and https://artists.proofprofile.net/proofs/artist/2eb276a7-b56f-4a23-b6d5-064194d470bc.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 → block OTSBitcoinBlock must exist at that height 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 0xa71b1fc7fc01a9507ecf4dac06a04cd0229565094936dedd5f557942b6108209. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:47:57Z), 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/DET551100241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220d2420b9a959d916b023348ad534b02cd0374fade703550a0f0607e301aed1. 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/DET551100242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582a602f8b7768fc144844dd21a1feac262ee8ee9158fbc061d0a6158bad32b6. 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/USHM91355821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a9852aa9c95145cd1cf90eebf08fedf82d0e14cd5c60793149cef137c8e60a. 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/USHM91355823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5ffbe180646016286a99f6303227fae3f63cab6e78dc1f8d4f139b4f79357f. 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/USHM91355825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372469e0b9e40aecd2d3b59978e7f96177788c88acbd32cdd9b1a36ca6c8d772. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:58:42Z), 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/USHM91355827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4ada9e6de3ef9fa7fff2abc8fe7a196fbc097ba636a17146525bf0ca17a417. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM91355831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c6e0fbe8a18f4246b8606d30a4d74ece4494507228f6aae9f1cabc3484bc92. 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/USHM81453822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123db7c20570d8dbac2c7529f4df29585c4a9a0a1124d142fa5eb441710c643a. 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/USHM81453824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56be0205cfbf4d77c02c42c212fe326313b0e02f976288b579837e81ba07077. 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/USHM81453826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32a001d94850618eecd554e1a8a26d9d9b537076274ebd850f4bd9c6a6175cc. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USHM81453829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d17e4c5bb910c6362ceebd42cbca5025580c937bdddc17920fdda0664b8842f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM4TX1777131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58413ffb863bfd408d3464dddb71abe67fa2039c81e895bec77ea024e5fbef48. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:09:16Z), 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/QM4TX1777132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66fa5dad46ea0ec705a84410988f77da6bfb2fde9f5810087dfcae3c4c03774. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM4TX1777136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87707d463ced22f533e6e99681c60c9e6b2ef3f02606d7c96891fd3d2b907f33. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM4TX1997251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3166bbd0242c3ef7ba046f02e65eba56a787e0e082977db39231ad8114e8242e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:33:38Z), 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/QM4TX1997252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870ad121d30133a05d7465c8fad2914293c73b2bc8aed45f49ae45bb316399ab. 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/QM4TX1997253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755dd1dab2fa32c1befc867be5ca1d2e2efb62d77654c994edbf1e70546fde39. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:17:45Z), 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/QMBZ92063723.
Shinzou Wo Sasageyo - Attack on Titan Op 3
Gurenge - Demon Slayer - Kimetsu No Yaiba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3505f42246895a90728e9e2269d097f9f947a55c401303e8c2cb2307c963cfb1. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QM4TW2358769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd44e7081978cff0fc659b80326433ec09e5fa9a48a4fd1e6eb865f403cf30b. 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/QMFME2338444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf16e14314cc17848a289b12f3cc393cfb8c7b6e8d72a4c39e05ccda8a964d3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:58:42Z), 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/AUI442400089.