Felix Jackson (born Felix Raphael Joachimson; June 5, 1902 – December 4, 1992) "Felix Jackson Is Dead; Film Producer Was 90", in: The New York Times, December 16, 1992 was a German-born American scree
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 0xeaeb423ff505f2cea4c8a9d1dd7aed259cd0fbac2161bbf0824ffb629f9401d0. 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/78fd61ae-c94a-448c-9dec-7d9724e6dad8.json and https://artists.proofprofile.net/proofs/artist/78fd61ae-c94a-448c-9dec-7d9724e6dad8.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 0x23247ea2a24e4afea3067c58d67fe4fc024bb826625380ac5e89eb1f3e5b2f3d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKXN22370133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c08775fa530ef88698fb3e7fa3e6ca12278651c345a4e885226f2c5ac45947. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLFP2339326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fcc8631bf8f9edc043e9e6ead797de539e1e310f39f907ac98e5435336d75a. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GBLFP2339325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9616b7cdd987a4dfceda2f263b23ff649c7310e30edadb7d72ccdfcc8fe4db. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/UKXN22527025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bd2813dadc1241785198c2725e95f9973dc233a1bd0669baf284dd53cbc5e7. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/GX3Q92440327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a39c0db8e99dd37f54d295e7239a10c0eb4c88c8b4202fee2183ae936435d8c. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/UKXN22370130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c848b238fb1e3f6135d2fbec5e28aab33903c410886fd53ab0cf5eb254f546. 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/UKXN22370131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c08775fa530ef88698fb3e7fa3e6ca12278651c345a4e885226f2c5ac45947. 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/GBLFP2339326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c4d7cc4d39e9713d6d17442bcc590038774f6a8b18b3b10af38a5738f9576c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBLFP2339327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086d3d16fa0656f868be925384fef8a16f9a9e7f759d9e6f927b062189ec779f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZYXP2348497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a39c0db8e99dd37f54d295e7239a10c0eb4c88c8b4202fee2183ae936435d8c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/UKXN22370130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c848b238fb1e3f6135d2fbec5e28aab33903c410886fd53ab0cf5eb254f546. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/UKXN22370131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9a6c75bbc93152c6cc7980d0ccd87b2666d1357e7a9bb3b0dd5484e34ed5c6. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/UKXN22370132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23247ea2a24e4afea3067c58d67fe4fc024bb826625380ac5e89eb1f3e5b2f3d. 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/UKXN22370133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1cf9dc6406b5b57b774a390f78348c576e912e83f3b1d5a6cd2e75fcf1dee8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/UKXN22370134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc5c57389e785e2467fd0e9974834242bd2229c1ebc90140084b9048f2376dc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX3Q92440326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c401f6ed1b0646ec7798bd4520a6da16aecdb49e14033c09b8d2aa490c8947d. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DEH742432395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3408f9b7ed9a427e89f5e85036dd4c38d58fbec13fa3a9220a3c676a0bad7d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKXN22527024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5728c97f50a4082fda0c0a42742cb946473b45550876f3f07a14b9b38053e16f. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/UKXN22527026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812877b0c8dd811c619107fd8b72f114c3a3f094b2ca730b4fdb6cf563081052. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/UKXN22527027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fadfa15d44b8ba53ac3f3371bebe45b1582ec4a5f39ee3e8a69b5e76228dcc. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/UKXN22527028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86aca86ce29cd44e29b576e1e7f105d1d9841202ecf180779ef4b8f1e6e13829. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/UKXN22527029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508ee86262376e13afeffb12cc4ba0ebf91a6786b97d9630077100e9b5032f7e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEH742522997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e21d33b0a60fbbfe55b3227482a5c6dd0a36e51a3fb2bf0775d5fa056f5862. 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/DEH742523023.