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 0x21dac9d596facd87815eaf0788b7cda65d68338ac9ef4d975be03c2ee6656bf0. 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/18cd4bd5-8228-4c48-8430-9307d33a76af.json and https://artists.proofprofile.net/proofs/artist/18cd4bd5-8228-4c48-8430-9307d33a76af.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 0x62f8386fe8c84e58d6e458aa000c30b743a9c226c160552df0e7ae25a6a1069d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB2LD2010108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc461a1b90638feec7297f81aeef01af4ece68a50654c0f9e946f9968b5ec90. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKPL2141822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbb65d9d23285d175b4af159f223388f8bba7d89a6f7416c909dba9dc050ed5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBENL2303736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93a182258e99e219cf28a1bc6724066cc9a94dc7b4d584a3f27fac98cd42620. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX872372440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa532257d5e499dc003708f747af44238e3288db0a093ba461c061d4d6a702b5f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX872372441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ce6243346ac960fa612860bae58f8013899b9223ec2b64031fdec8e4f82b48. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX872372442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ddcc4fb960f21429d9245be8209011c818027659d663eedf708a3976d4ba9b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US39N2302786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a90879046b7028abdf519034ff2bc82053b3674912d57e039efc1c355d05130. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US39N2302787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68919638cad5d2eba756622e70fe352a15f87a5d5140d5225b9dd92cb172fb73. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2236540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d2305369150aea2a3e139462eb37833e2675593dd81b347c5b2cdae2a93cf4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX282259793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf265ae12ba982f9cce2bff4e66e17a908a6d974f33669164772c12b902ecdab. 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/QZHN42137116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f910937b8067559cfc1529ed16bba2eaf9cf2ab12ae150da3d9357a844af3e1. 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/QZHN42137118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616bfa8cbed965920cda39e3edbfd09d6c833fa30fe2ac8e47b1a74a9d595d72. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BE5KW2400560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec1574740b0abdde65398e822db95b6be1cdf9f3204567acbd96af5e38623e9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USZXT2353151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3345c156a3a797a9b2aa1dac9295cfe9d3875d677164c45667c9ab1351861c34. 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/USZXT2353153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464f45c4c33b6ba5c7ffb2c83d8f3f0a81cbe93bb4627d1097e014bcdf5330bd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2356674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf443d8a5d6db52effba35049c9b12f0cd6bb92c01ab543ba0d670a12f20140f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEPX42300623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f13d00deef85ee77c41551156b74723481f44fcbfafa2899504830d6a74d4e8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR0006109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d8e014f3c55afb20bc9c5bc17de49439cd5fa3a4b34080344f7f4c1a920457. 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/CYA112000823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8935d327054613c146138eb6583714f205038c0f21115c37d8d712aa8fdb311. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2045622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ee296d9e35d48293481a5671cce0befddd45d5bf1b7f70f0e65e6628e3afcf. 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/QZMHK2040222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5710c0df136d70df5e6031ccbaf9d86015c93524bb63cbf2f9bd32477307243b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD2010138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860d9a26ea4844e2c91f909cf02746da1f1c53900d684d6a6355e00de3a7d26d. 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/QZKDK2080351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd3c37b3dac8b0004bb6b515def403f3bee58a27b6c1a84176bb97c8328cf31. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKPL2006481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8576dc5fc4716be43641c182b41fa898cf9ba7f403828003e74ba91ba5692324. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKPL2003946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba74a14ac64740dd084852a82df7c8838610838d94a9b6f1e733269929c5e6d6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKPL2004222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125c911538ff60adb50f52073461fa07c4e59503ae73710544fc62cbbb96ef84. 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/QM42K2071854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6ff2163e29115703f78a594e004af01ee61a89c6ef3ffde49714f7ad7b6a0e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM42K2082914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e53e3604b272d8ccf4296c5c6e11fb3424038a501a7b0a7d5c2e5e52cf97de5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKPL2091721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8543c5fb43e6e9931e9312809f1cea3d1b1d3b3c01727ae56eec2ff32bf487. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKPL2089890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9609a7d96d6409562374ba892f741b0223c210701b221b54a7ced5fdc3d94a5f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P1956610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5248d9a7fa35552265eeeb6778c0d6ffeba199c8f207f78cd4b1089f1488147. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN71908433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa35732a57da0caaf011735e111338bc080e0fa7cc8bae903cc4e8e17eabd3ac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL1971129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbb65d9d23285d175b4af159f223388f8bba7d89a6f7416c909dba9dc050ed5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBENL2303736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0459ff4fd2e21f375df604a6c2c47648fe445c4185fc620b3a101581f37a7658. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH3132318304.