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 0xcb1ddb36bda6c937c7cdcc0c01178c0622bbaaa325d5ac4742908fae719ef6cc. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0863d60-dfaf-44c9-bb0b-407263e4b13b.json and https://artists.proofprofile.net/proofs/artist/f0863d60-dfaf-44c9-bb0b-407263e4b13b.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 0x166156a588df0c32ad257cb0444ffe2337718c9b8f2cb8e4dafa1d9bcacadad6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2033379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0533976014ea53b3ece8cab88eea9bc4c066a52f8c42817dc33f2428965f4f92. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2033383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1558867a36a16552963739bf2443e1a3d78b8d187ac20a167a465785210f7f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMEN2033385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c19fdbd182d8b71de5613d96c1a58542b8f09fc85223cc9bc498a70c8b93c6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2033387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3907c1752fbef49be622ca378471880e682ac40283daaf4e70de676291b743. 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/QZMEN2033390.
U poli dzikim i apuściełym... ✸ У полі дзікім і апусьцелым...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb402b41ee74a5e525c5402348e905edaa15f46ffcefddc4284b8ee63850a7e81. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2033392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856016b6fb9bc07ff68652818e4f07924987cd5218a1136a6eb9001064cbd394. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2033393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0b0ace284110360303cfbdb4e760d3ca1f37a96a716e9aa23108c6e71301ed. 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/QZMEN2033401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd599089a45c6980dca8b1a3505a7054652b85a76c0e78040e640b1df24c16839. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2033403.
№ 3 (“Lubaja-kachanaja”) ✸ № 3 (“Любая-каханая”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf008a0458de469128592a497373296713f165f0fac5adb34cd2ada23e450da1d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZMEN2033382.
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 0x897b61535d3255d8d88dd71caa0cb3bd8b0f4e9e006ac76676c87b70d1e28f4e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZMEN2033384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbea5db15a751738210a911432cedb0db540b0abdbe68d7cab986b5779fdd578. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZMEN2033386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad60b65af9993f41addd4c64981c66f8acd4f6cdb1ffe398e57c0b2630373e72. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZMEN2033388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498c33c88438eb39a3e3ebcf25b2008c0e5279c9bf8fc3a8106f3394ba1cadb7. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZMEN2033389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac1013e3edf071b68c04496656b12288f25280b28d060c97f507bf5b21dfa43. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZMEN2033394.
Dobry viečar, pani... ✸ Добры вечар, пані...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f5c2f3310d8f7e492abfdfa9babedfd9896a5be50f8d5772fbe61b1fda6f65. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZMEN2033395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46ade77e11e1f3158339566b4c6dabb11a0b81c218395e8c7fdab56cd8faf8c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZMEN2033397.
Ruža čyrvonaja — symbal kachańnia • Čornaja ruža — emblema samoty... ✸ Ружа чырвоная — сымбаль каханьня • Чорная ружа — эмблема самоты...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e478a20b8d65505fff876ee0ce8252a827c6fc6bc089d366c16e034c75ecd3. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZMEN2033399.
Bieł.Ta (volny pierakład) ✸ Бел.Та (вольны пераклад)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5368a6317547dc0ab68db5863620c20685b0ad1813eddd201d4065f8fe5c68f9. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZMEN2033400.
Ja ùžo nie bajusia... ✸ Я ўзо не баюся...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03c5cf85d96b47c76eb2c09f1988109034d13f38f495c735ba295a77dc8e857. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QZMEN2033402.
Kurapacki tryvožny bluz ✸ Курапацкі трывожны блюз