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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ed857b970ac637f687dc7fb963eb5d0c5755339a520ea596d147eb6be53cda. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9923e3c5-5a55-4072-b4c7-37f04c511bf4.json and https://artists.proofprofile.net/proofs/artist/9923e3c5-5a55-4072-b4c7-37f04c511bf4.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f63c5ce881f162237e363a072cab7857983518452b72b36de517af52442a05. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFYY2005030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbb47e54a99d0eec00a214ccd2faa5f4eafbe157492ec97d11ab8e87da2dbfa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFYY2005036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979433d1b7a20a9633432b9afb035f4822fac6695dcb46880eee9aa283f380c7. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZFYY2005041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae15627e52eba44c978206f9453e98a02c541c621f1d2c39536ca9eaa04c7974. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN92189265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa676b0f7e2499ed0d15b361ef25a86105a051d4ddff17d693a37170cc6f4554c. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QZHNC2296211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c3c2fbd04801919946a441460823102ed0a79e9a3d8a08199ad288b8b06a62. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZHNC2296212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd2198868eb4cd80a550e551db04cfc09680fda331cbcdb2da55856090b907f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHNC2296215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b1e3922c67b2d9c9f3466712da9b51a06a64222b3f0d593f6c4bf059deffa2. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZHNC2296216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2747e10c18306117a068b582848cb05dc5ebe04d3bc8fa647a3ca0bf500928. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHNC2296226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2670f2087aee2d8939369eb7709126d857bb39009a63e8cd5108800e2f8c817b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZHNC2296228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0664ecf223e5c06a6ca70e6885e5242203f22472a0bfa562017146f9e5527d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6N2213238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74388a55f346c542917649e8f4823ca181a366116d0d2fe328e9613ce6d66be. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZK6N2213240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5777cb5492a902891cb6d531b83750c1564f1c0748e293b2f033a8a0f728410. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZK6N2213241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab9dae74d37ced0ba09536289dc23757ac505a3912fc276d2bea8a638b73e76. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZK6N2213247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fdc83a87837064f3b4271a7cb790457b7636194b1b389984840c2f8d71a121. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6N2213250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bbbb1d2c435bec9b4db5ebaa3dd2069e842febc991b147e6dd371eaf53993a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZK6N2213256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85a49cdbae18106ea9cca8183074cd2667545d279559ac3320274cf35a7adf1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZMER2271609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da83a012a71887a9910627768a5318fa08e7aace24d4f1f94730ed955910abf. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QZMER2271613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb1155d731c238bf75c586a4eec1a82bd3bb93f0370b397e35504ad1da045a9. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/QZDA42359341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb09d195c97c154eae22c4106ad137ddc33a1e9799cfdd2b7adc71ef212cc58. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDA42359342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd479de012f8f4159e945abaf4c843b16ac2d06bcfc91454ebb7e05d3b360f2e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAY2376560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad9abdbff45654ba8a6958fd1b714cbfee0723059e030cf23df9063d42fb4fa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAY2376562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7fe04a3aaa964f2bef0473792ee80f1324119c805d0017cca8bd9dbe96b749. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZK6L2590868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5080c8001b76b243358376ca7144a9a2118d58bf084ab69d574c51f5265292. 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/QZK6L2590869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ccac03fe600da9fac826484769520c239ef14e2d7681ba48f974bbe65181c9. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZK6L2590870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a51ec8728da8eedbc3756d620b327bea38f221013b0756988d6960ed027038f. 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/QZK6L2590872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3d1a87cf3ed41ca2cbdea87f3fff58a561091df97f073aa1fce147031ac0fa. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZK6K2518462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcd9f8c5e60c72b6c3d0bc07b4826cff0c7ee4ffa2f5c8fe1b38f4c998c0dc8. 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/QZK6K2518463.
Forgotten (feat. Nutso, Spit Gemz & Wes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ed58388136b28606615cea9d513546242a9dbff679ac2889c0b8634472cb1c. 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/US6680913056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3836c67b3f6517fbab1662cb020fb2474af292dea369390bbc1f4e1679bcc00a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZC62146173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe59c2ec3e0ef1f7baf5d6587cca86547e8853ebb348cb990a81aa33ef574cd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAY2314999.
All The Time (feat. Spit Gemz & Shaz Illyork)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1627d18bc96064f90c75be4a3bb4ed9db656ad567b14c66520f31ba47cf3a79. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W11203586.
Rap College (feat. Tragedy Khadafi & Spit Gemz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7e45fea7e70398a7dc07105aa2b51a9932c0b38cde1f911e7e69f763673847. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USCGJ1448469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf9dc02048776f6987c0babe48b26f50b1e9217c2c626591cf0ad4412f1d4b0. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QMDA61811663.