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 0x9908047ee97643395bb86a66f6aa2b9a166992aaeaa008724b07c31d87c5e466. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9be0cdfc-2906-4aaf-9677-13830612beb8.json and https://artists.proofprofile.net/proofs/artist/9be0cdfc-2906-4aaf-9677-13830612beb8.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 0x7c5d1fc34f71be2c99578641baf8e68343f9e95bb1f911edd2b551da0a4718bb. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T19:07:25Z), 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/QZF8N2187119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ae4c3f4ed31f860dddee9b72400954b14274612c824559bfc7e083fbd0ff6e. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:51:34Z), 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/DEH742305726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fea365c2b96bb7ed69c613f2a4c24ec13a06a0a1526a784323e962549cf4689. 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/QZMHP2365040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da3d9fd13297f20d7ebebb7f8cd0dd3220b231ca98959f1daef7c24c1a937a7. 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/QZMHL2390802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafb534093e6fda0d797f48f3c1a55c11406d791fddf1301cd3dbaaca5dc1b15. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZMHP2358633.
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 0xecb9104901afa3ebd29e34208d35ed1354fc96d00b033f0c7ae537508e65073e. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/QZS632320976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3597523f82b9a228ab2a7e9b2c6e206484604c8e88728c3b5b02264ec8fb86a9. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZMHN2358136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e46d282a9becf4be600295688b9bb8216dd76b98ca181ffa1dd15592e09f384. 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/QM8DG2361625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbb1d35bb3d3431811caffed8a11736acfe41a2abf69ed72c1e0f43cf675bbd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USHM82382527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5233d16b42d6a5a09cc0558bf6e4ebe67f208efae6cbd141fc9b0d60b03afb17. 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/USCGH2417250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e617acd869769b77982149ab0780f9526f95dd5d6077cc6ae4792b766397d6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GXBNP2475393.
MAGNUM OPUS FROM THE PAST, MEPHISTOPHELES FROM THE FUTURE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82005457205fb338f035e255972c4cbd5b9c2007d8e5517e28c6c27bbfafc6f6. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GB8KE2418688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c59de90be544906eb300957ff46aeb9e25a091b1e97bc83fca5bec54fb5975. 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/USCGJ2554806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82cd4d5f8bb3fa0c169797f0a4272d3cc813b09216504c4ab23a9b87b26de7e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USDY42575246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd96e1a13d232a30f335ce159d7b3ca40515ed6aa0239f6c32e9b587c858dda1. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZS662538009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb107f2812431178446570f7672fdc67b4df16a880ab98998566bf07843c431. 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/QZS632255062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e935cf24d18a60ddcf3bf4d5821fa504220e0b50cdb0f3e17555b649079edf3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/RUAD62300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae35ced9a08c13556346abb08e824c7444eda7317bbce95a3554a9fe52ec3416. 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/QZS652215927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96efcab536b1e76c340fbf4c238a403bc5f4bb93e05c360ebedfa693b9eb95e0. 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/QZMHK2477379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc3af8b8434ed9888a4a817a6b33fc58f2e47a06c67a9e661f35b612d74edd2. 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/QZMHN2397243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01b840e261d1a88fabf8a13fa7570a2210bd2b8aaa7440af8973f73a6869d34. 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/TCAIR2458592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe140e2803f3837b2e2f617ed8a0ddaf9a5ec400845b827fcfb4900fb535ce3de. 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/QZMHL2304936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecb104358263bd90d1cdf060ea752446962b53eb7c58fd5be4d654ac771f91a. 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/GXBNP2448165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d1f485bca269666b437add7828b6092b86982681a7391f9f00b2f855bb0b8d. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZMHN2373657.