John Jay (, 1745 – May 17, 1829) was an American statesman, diplomat, signatory of the Treaty of Paris, and a Founding Father of the United States. He served from 1789 to 1795 as the first chief justi
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 0xf42e378d7bb61fb50f42d0aec5cee7e9696c5e8972fc5e156f5f8cbe0171f7c8. 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/5ca3436a-5c21-4d8c-9725-cc9e2f6a7063.json and https://artists.proofprofile.net/proofs/artist/5ca3436a-5c21-4d8c-9725-cc9e2f6a7063.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 0x0b1276f2ad46570c97c25a49bc4f7dd23fb49337fc926e3eff02918e610ced00. 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/QZ7R42251738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16ecdeb00ba23ac3055232156b8967075bb7346a65e0ead64e8ac41f0899176. 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/QM4TW1617125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1166781b018e805dae604acc6e17567cc1abd59a23a6062fdccefacded7f38b. 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/QZ7R41952487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe129b5174ab5ed4a52bb34eba1d9b32c05b6bd930dd6d37ab91c6bac79b12096. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TCAED1970225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7852a98def43f0e44cd17336261fc0963d745be556a277b8f8204c953d52db0f. 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/GBWUL2110564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19595e2f55fcb167c74d0ce5a1578ee1e1118b8261b40d1214df4a8a2d93b046. 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/QZ5FN2089595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7933e7814be0c0f6b37390a4ae83d13239d63fd733a81682cd45b8df0f921c12. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZTRX2384905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c0bbad51e6e6a0c3ed0212332e056cb30e28c8f057370367e7a3f6dcb8ab61. 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/ES71G1514254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b591e8572db9325437c021e40cccbf5e2f368b379d4eedb9aa42ac3c76118d6. 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/USASN1302045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6a969d3aafc3a293464d961fd234f2c8f980c4aa3233795aff12469f43ea00. 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/QZES92467180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5b4b9fececf655e9556bb0c5494fe3af24ad6546a955bad45141a03b28c358. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QM5R60700041.
Nico Canada Presenta A lo Under - Zona De Perreo, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737fcd7f56e2b3601a61305e70a527717c603b5148ae9d59d17fe7f8a225f5da. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US9PJ1200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403b41007ed869e9b0d9f622e5bc6fe4594dbcc462228a94c90b403c1999bca2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NL8RL2420837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96247695607e8f77a55c5c0e4a4ce864a0821f8d45b6213070b10431ad38ab21. 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/QZ7R41852825.