Fucked Up are a Canadian hardcore punk band from Toronto, Ontario, formed in 2001. The band consists of guitarists Mike Haliechuk and Josh Zucker, bassist Sandy Miranda, lead vocalist Damian Abraham,
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 0xa8934287fbc4aea4819f0317c9168a28fd9a294a41028ac2b681d623a2660942. 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/b803a321-5f72-476d-a931-80cbcb660a3a.json and https://artists.proofprofile.net/proofs/artist/b803a321-5f72-476d-a931-80cbcb660a3a.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 0x3237ef6e040795078c75d975da89e9ba602881742c7e39ccc260ce407c9a1988. 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/USA6M0612201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9d1d349ce3ed5334270b922624f906bff1fa9f40ddad4dc78904c151910d80. 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/USA6M0612202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e09a6e60a45be8723a3c458c5513f400405e424e805a7a614c4546824e2961e. 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/USA6M0612203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa073d685108841253b94fc9c859130fec65d8bcf24421ba6607531e9e221c92. 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/USA6M0612204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8de7127684c4286d9e1e3696ac28c72a9f2be52b9924339a1ff6a2c981b060. 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/USA6M0612205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe999563aad40bf18964f749100ef26025d8c7db6699c42c817bb693f6e1154cf. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:32:48Z), 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/USA6M0612206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd233f99563d52d4e5afbbd8f2dfdbe527deb6be20436decd923c23cc6c3bcdaf. 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/USA6M0612207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b04f66855feef21761c8412a898f2c4ea55be51845294e2f21bba82243ca4f. 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/CADE60700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b3b552ebe79786a2e9428c1d97657d3e45280e5711ed421171e42d71f7d56e. 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/USMTD0880702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffc73545e45d70fe145b527c9d0bd7fa43531d7013846ac473c8ed6f4325a78. 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/USMTD0880703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e444b46ec67ac1479b2efa36a59d22adc094d09bc0824e217667daa4c6cb073. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:53:55Z), 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/USMTD0880704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676db21d6dc58bd13f8b4bdebfd61cddcb79afc1da1fe6a45d202888f3a9191d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:04:46Z), 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/USMTD0880705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c38fc4258017867d72a6f0cf8c14f82802d3765d3778a419d1ca39ef152ec47. 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/USMTD0880707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed3dae3b020dd4b8d74baf27e7d535c733d2e1b92788b3a9f69ccc1da157abb. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:36:06Z), 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/USMTD1101499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1139de03393032ae6fd1dd8596c93e0b29f71b0c6b6146669c417e70403dfc2b. 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/USMTD1101504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a38d36862fce97c57c3c85d691e6cfe6059a712d935ff2cc560f3939dd0fcd. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USMTD1101505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5784e26e89e47afba348462a2b056f0aa2f20fd1e5ad14c3b9a4ec157f270e55. 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/USMTD1101507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7788be5eebbc78efd45c4fafa6fcb70f630796b05bdcad15fa3b7e60a565ee3. 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/USMTD1101508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72db6abbe4e5ce32966736bf3b12ed0cadb49c412af4395f829f30db6226312b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:39:12Z), 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/USMTD1101509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24864660a10a92abac00160f40e2e1e63ad0d8fda68b3a54c899b0cd416e0245. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:02Z), 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/USMTD1101510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f28bab38eed979fb6d6e5e747716f01200b991b8331e75c76e5c5ae0b0aaada. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:34Z), 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/USMTD1101511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f36fdb910a12db0dde038bb7d7e6bcbe843a798cfc1898b5e5fb1814771481. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:01Z), 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/USMTD1101512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267d46793f59f2959d721791a41c9ad950be6033cae18bfa8872cc4c999acb85. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:57:26Z), 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/USMTD1101513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3f5e57b97bf6459dfbd818bec0e269c149e5a301de344a17956c401e58b414. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:46:03Z), 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/USMTD1101514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1aaa22f1f1511388b1b85a48d68b21b05cfd5886de3c7fbdbab6a37370c4db. 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/USMTD1101515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56413bcd6396685d36a6f036ac69ce2051fda5c32bedddd1b360f9979f11d0ff. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:41:51Z), 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/USMTD1101516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ecab104d0db03c489bc34986f3272baedb478836e2a010ad623defeaeb9544. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:58:33Z), 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/USMRG1866101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc30e3917421f3958dd9d653e268b2f5e7c1bb737b018425c8af6e306ece9806. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:33:07Z), 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/USMRG1866102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b531b4fafdcd5525bf20216e92dfe6b6bca307461b0e730de65fb74aa9b1054. 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/USMRG1866103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3e73438ee47fcf7a7dd4346e698297b8c0edf0218323e799c8e1234342d75a. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:51:32Z), 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/USMRG1866108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cdb0e19ad58774e1603ac1d38376bbe0c5b61ebecca0c2d73ded4fde56ab31. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:02:51Z), 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/USMRG1866109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4193ef7b8bda4d07598296173afec5cc213369e0cf4f462999ff34639d888898. 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/USMRG1866116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2afe21ca478c89b0ddcfa2f8c972b3a40aafde02b6cf300bf3146b4bad772af. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:26:51Z), 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/USMRG2380109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40703ab4ea6e152395f50ce886218c80b0be09d64619a093cb24bc2b3d9bda1f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:49:57Z), 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/USMRG2380101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49afa3bc7b777e8f0938d956476683bfe2c0c1ef103991934dd1a195840383d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USMRG2380102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20bb433da3fc22cc2014abe454a8208037db19831797efd902f70f6d935afa3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USMRG2380103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc86f8066a66b9d7b0f530ad68828095ec96ba4fe3260ad03c824b3cb81d441. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USMRG2380104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ced1cbd4c3f34f68a3c5b292a84f9cba6b8e6278bdcdc6c4a9e16b9aece02a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:50:45Z), 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/USMRG2380108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5cfa615289a4633cedbb37192e69f8f5c7171185523675d85477e257a1772d. 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/USMRG2380121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a57aa883d463f22076021e7a8ad7f063620ad36db28951feb2aeae62e58249e. 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/USMRG2380122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154072bee827923d9a8155c267406229a654814b296d2412bab440c35eddd588. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN82400750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004b8de97d17ec19fbd479e87bde0d7ba72c8e5d62098d0d632750afe1715353. 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/QZNWR2460299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9474b728b58e54a0e5f31c8015e542c5a17d56dc213ccb6470ba58b0025c0621. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZWFN2408923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70e7f24f4ff778ce87eb852bb9d3615b383250261fe4b9ff34d87bc3c230bdc. 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/QZWFN2408924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757fee46434ab240664e714033dec3df87dd0c28c3da6a200604a658da12db57. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZWFN2408925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551fbbf67e0ec99fb24c2a927b24f0b63bcb3898fff98f38d87f9f04b51459e4. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:47:45Z), 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/QZWFN2408926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993d8fc166076ffd6bb0723d5aa7577074aabbedacacbbe8a6ce4ea40d7af53a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZWFN2408927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521d89b9d50b4d3e54a56dbfc6b44e3191a2d2305ba56540a1b41ead08dd1f04. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZWFN2408928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31b4952c5336714993ec79581f876ba455f0a1d94376691110dc40f19884509. 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/QZWFN2408929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9b46ae14810c11ec475c6c8b739927384bd512a61ddbf429e1937269de0738. 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/QZWFN2408930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab4a491d8f7fba513a4c7c74417fcc533bceae8613df8fae727dc909ea83b88. 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/QZWFN2408931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa38411eef885da666c5d5ce41d714f1b213cc742216bdc9b35af964622360c4. 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/QZWFN2408932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de68fea5bae1a5514ab21c7313467943058108be9c788c88e1efe4400faa8c2. 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/USEP42357008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de68fea5bae1a5514ab21c7313467943058108be9c788c88e1efe4400faa8c2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USEP42357008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b34002c4ca6708f7bc4249f3520b184300a38dbdaf5ee59fd0ced082161b4aa. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/USB4U0400060.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch