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 0x4bf7057ee80799cf7b05a84862c31616af4f8a065382e2150296185fa9e4e31c. 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/d5833574-611d-45d2-875e-13b94e65e21e.json and https://artists.proofprofile.net/proofs/artist/d5833574-611d-45d2-875e-13b94e65e21e.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 0xcfcb33153b31db3db0989714738c988a1407192679d9fdcdf135a056b767b047. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/FR9W11920807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae878af8f6a1f82e9b157c2a56b07634094837b4bfbcda578d226a1a583e448. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9W11920809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d66e818512aa9605e39b7d6ca35a43e3827c9c551eeb43508a9609d10905e79. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:05:24Z), 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/FR9W11920811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc0d3695d69d4093f788e929fa9dee58d485e9a4cab2f37ec430d300ed832ad. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/FR9W11920814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafedc504875c81669b1ce788615915db22671d362334ea399f8d7f42b937b7e. 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/FR9W11920815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61d8cec2123c4c95adb10119cd1c5f37afc513e04f94b9141268d9df35d1d11. 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/FR9W11920816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8ec829c9da0d331c5a8b4210dd835df6b46af1dcfe601bbc7bd13bf49fd72d. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FR9W11920817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882f413d27cfef48ab4d2ef9820174575da92f93077c012988b31af97718b309. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/FR9W11920819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ee99bd41f5c7b921a6d2ebce7a5f0fa8a89babd6555f14154ad35f8979c9d9. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FR9W11920806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb698585effdced6b51fbbdcad8655916c5a6828d6627a1fc8fbca27f9e24e4d2. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/FR9W11923070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa1ce7be3f6009f58dd5f56d99a38ac38c4de319b83ca04a38bfc7956341ee2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEZC62256197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa514d07a83fc69355bee29d587e82a824709f6009ca16157ea1b9c8dadbfed86. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:49:38Z), 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/GBPS85335054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1177f14573fbae9a417796088ccfaccf5b9caa94ad0896db4e966d3c502f28dd. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZPLS2481232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb1d2b5d71031d648e2edf9b5a19233550c6df07bcc5415dcecb2d910db5531. 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/QZTB52427136.
Nylon Archives, Vol. 1 : Cinematic Grooves
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b5d918995f0476fe9d5e33d7af467ee19d42e0681c7b97bd486aabd6561b54. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FR8KQ2500530.
Analog Machine Presents - The Brothers Nylon (Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8caf07e16f86fafd02975019213f9d72815ed49fff4d3f6f87ce8a52482f0f. 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/GBLPF6779512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f2316288ea3addea71fa71f98e7d2b5c823af15982402b43d34514638ae4b9. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBLPF6779513.
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 0x3c54fd71b3d6f9e8c0812b34a9e4d03154acbf94cc30cecc659203926b4e1b65. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBLPF6779514.