thumb|James Paget in 1870 thumb|James Paget in 1881 thumb|"Surgery" Caricature by Spy published in Vanity Fair in 1876 Sir James Paget, 1st Baronet FRS HFRSE (11 January 1814 – 30 December 1899) (, rh
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 0x745351279a6b68aa7afc7b65a89047dbf0b5607eca3fcf95a8d209d7eb208531. 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/efd58508-19ef-457e-aef7-d053abe6f66d.json and https://artists.proofprofile.net/proofs/artist/efd58508-19ef-457e-aef7-d053abe6f66d.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 0xaddd0fe80833066d15f9e9b6c128ccb56a8da15f04a754b0e98d46867c0a4307. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM4DW1545685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e94130f70a8382c0c93f9628727bc9be126fa5b8005cba0300f833d796c89d. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QM4DW1545686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e52b8119e5263cb7aef38082223658d241748e4e79b36b19a6e14fbc523f3b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM4DW1545690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334a599b45ed8798ff754d1d1f612e3d55f65e9535ea51dd85ca412bc22289e5. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QM4DW1545691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1697d875046504310a1e1a41e3e181faa6260b88cc25383b76d21aaf5a79bcd. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QM4DW1545692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174296b8c5248b30ec2f6f01861e2391bf13fce87ad3005543d6339c397a4195. 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/QM2PV1547904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bf2ca3f23102cbbae3581266989caa485dda58137afa79c18159edfbafbd04. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:31Z), 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/QM2PV1547905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701f6a0188c62c90cf178bf4b92c815071c6586136fd568cbb1518ee4f73e05e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QM2PV1547907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6491875a625be5639ea4c166c4943c1d0ae0b86493b2dc0d2eaa603a889ed8f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM2PV1547910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd7b07aede745f9abe97ac034d03d8d07857f09e493fc0f398ace03b45dd4ef. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM2PV1547912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fca780704bb388228113b920d743bcd3bd76e9f9662077025b6a0ad6bada20f. 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/QM2PV1547913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2350cb6356840be951cab1c1baf371fca10a1312cccf41a72be076463e87b3e3. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QM2PV1547914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c497afb2b33ec19c54f48e21559fc786874df60ed0ca8a31691fe69b0593f4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFYX1963191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99f9ab9daea87d84b864e09ce71f2eb465780adc00f461275b31f61d20bfbb1. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZFYX1963192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23de4b7016523f0cba9504cdfcc904455e72a48901d779af3688f96f03976cb7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZFYX1963193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df19c5e5c68dbdfb5e3b2c2ba66e16dfc071f8ee631fe985b717b820994c4c8. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZFYX1963194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562de4a95f1940c989b9de3e05d7a22b9b3efcfdc49c65c460c34f65956d0886. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFYX1963197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b31f64a51a1181a6854201cfe8dace77e78bdb61e13969686e56a3d1f0a5033. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:57:28Z), 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/QZFYX1963199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba25a47eb1e92fc1169b696e250632fee2fd999f140f93c6b8752120434990f. 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/QZFYX1963204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f027295161e437d402063bec92b52164400f25bdd6fed70d7f8847777f4809e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN52412712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36bc4063af41932aa9812bce2b76d6152661dea437478eeddcaf581916fcc1f. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/QZHN52412713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e4e3046986079e2e135ea2e9407ec30f91f96a75d83f63b0522727b2b80105. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/QZHN52412714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7730d9f105fe5dc8d128bedf36193024a044ae61e1459cf47d9cd22a5fe73967. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHN52412715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88a4c9daf7abe986d51eb9c0a9266d312264287755f51976148aa63e82e7228. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:23:10Z), 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/QZHN52412716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10fa30e64e5ca6c71817089185c0f220a69a2e95aff93b47dd6ece4373c59a4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN52412717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0345f814d2be9e46a2041c3d2f6e8489481d7f38f2f666b93c14b1e7373c00a4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHN52412718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd698d3c8f4930fec62bce8006af75314a1c774959f99732f47d0d2740cf0f531. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHN52412720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c951835742ba26794e8121dc4a485021b044a570b56f809a80168758949b4b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZHN52412721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb6dd302a96ff015568b14080f04ff246f9df4203fafb87ae822c90850725f1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN52412724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488f4a211b51c1356a650eb103eec16e1f5244ac53af0a9bc351450df92947ea. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:23:48Z), 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/QZHN52412725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a007ab607c8e9289cf9d190304860f5ea440df90904c6e97f8fe441dadedb1c. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:25:47Z), 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/QZHN52412726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f1cbd0fe34774c2f04f9e8717a9eea8e1d3aa9cf25ad62532b875c70410aa0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN52412729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2085be3e722218317657077a5e7c79e84fbae810417f25217911c659dd9da24b. 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/QZHN52412730.