thumb|David Kikoski, July 2001 Dave Kikoski (born September 29, 1961) is an American jazz pianist and keyboardist. Biography Born in New Brunswick, New Jersey, Kikoski learned piano from his father
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 0x3996b5a7ac36b8fd1b410e9ebef048bccea542eb74c0ff8ee926a807d5eb5a74. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa0fb922-04ef-462a-bc6c-4d6684661f1d.json and https://artists.proofprofile.net/proofs/artist/aa0fb922-04ef-462a-bc6c-4d6684661f1d.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 0xda6a4c51063dc7f5ff517bd6d8d718031a0f2db11bddf562ab0a0f75c4e433b7. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/USHNR2133602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf123b17d3f1e77161b5749ac0f3e9792f9f5cbc699f1a09379ef86bb4e4561b4. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USHNR1932801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57caccf8cbf629c96e35bea954dfb21a8da2df478e354ffa98e5a45f68504c0d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USHNR1932802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5262ef76dd76b0d5051bed56e1a5387c88b9a1fc638c0897f910719b8cd008d8. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USHNR4932803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82caf9fe39c4e41e15e2706bc2781073134c50de59e39315a5b3a666e936e09. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USHNR1932805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ede1bf66c328d4265317e906e575c1346467e3c240c83894d96ba2718d4e0ba. 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/USHNR1932806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf2d5f4bf359b3ac3ccde0f5379563b9437b6539ba22c0511b9173653ae76be. 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/USHNR1932807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e1b831b21ff3da68ec0f03787ac263f6713410931103a26a79224ee050141e. 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/USHNR1932808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fc21a384f3b67556c8e3230b22ee71173880042c36e7bb45f61bb3ee4a2b8b. 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/NLGZ21700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25115593886439160db466916155657ecd38ca7edb2577f7b560d5c8153eca59. 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/NLGZ21700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1536aeeefb95d6e58e56f60c02735fbf28c3a8b4ce24f51044b20620be4b5ee. 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/ITC931408801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126d8e593b1739546759ff9f144b8c798383b8da8ab69a89c236cd3cd56eae89. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ITC931408803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c791eb4188dabd98d1b1ede75a1de2e2fef788af0dbd60bb9713a59636db90. 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/NLGZ21200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e61f4b8e6a94312931b4498fd4a274d7d1b57dd096edacb9e49a2e6a17fda6. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NLGZ21200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dee2e1df3c8f58ebb7795cd611679884b1bb95c0a09df03bee15cdfe62c3a54. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/NLGZ21200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec40d009f88d8628118714d7d714b5b6104920217df568c453eeee3c46c4b8a. 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/NLGZ20903035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6565f6b75d703535ef193cb55e4e6188065c7dfe8cc48e732862a3efcc44c03b. 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/NLGZ20903036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c104a505f59d42e92e6327f95dc3958f8d7213e442390fc8ad6d51182a5068d. 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/NLGZ20903037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57eaf60a54b06a37be77b49fe521be0b17401d1140285901cd8456d62ce8d46. 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/NLGZ20903038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506b0db8447165fcfafc9abd0340ebaf209cc4a12bed6ff18df65974c172dd7d. 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/NLGZ20903039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28839a56d889a9255f5cbf31c8b28ed4747e507b0dfce2db777cfe58510ecd09. 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/NLGZ20903040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093dd6182ca0fcc753e7615f5904fff01738162d4b1e00ed88069546be54b7f4. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLGZ20903041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1896de085120eff8ba23bfc4340b8e6a423f8f480471feb55846f072e90f023a. 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/NLGZ20901383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdfd3060cf83af3f7513cd1484f55a062ba0531cd29421adfead497a01ec584. 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/NLGZ20901384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c35df4be175263f6de5a9b577163e772ee3d4def4189f70a7cc0fe9f2fedc4. 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/NLGZ20901386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f21ad047d5184efdd28e2bac6d8acb17608d956a294d7af22f92d96de0b5bf5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NLGZ20901387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5e2ea2d0fcd373d9b9727fa756ac6cdbf2a9ae035da273a2997817caa09fe6. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NLGZ20901388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cc0a8518e980af5b36eeb53ef3d261cc8ee39651c53e8c67ace9fe4d720d25. 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/NLGZ20901124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275785a9f86a26c64115119d23b781261231da2df0d334dbff1d63029da7ffbf. 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/NLGZ20901125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7952622cf95cefd7e32ef4521662a8288d068a3b457c9b1c87d6087a58631f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLGZ20901126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f711cc2d580a219acc5b5fd5e75cb0a060e34ce582b11eaa3a52c4771157a29. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLGZ20901127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d32756ca0e1936e2b01af155637a2dffe17dfca5787d304098fb97580a30ca. 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/NLGZ20901131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58d5a803ae61a45f026eec5137095b0de5e077196462af370e85e06cde17c71. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLGZ20902467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4428f729c335f1089d981bbdf77054690b9343f19310cd4c66f85bfc395729b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/NLGZ20900858.