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 0xfea7c4948af178e55e87f71ab6203d168f9ac7a94c1c3c3b9ac86cfe2e9b83c8. 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/0d3eea3e-a997-45ad-8103-6ecc27218a62.json and https://artists.proofprofile.net/proofs/artist/0d3eea3e-a997-45ad-8103-6ecc27218a62.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 0xe7bdf075124b82c636318518654dd2d84d2c9323d32d541757e7847d96fca436. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR6F31301190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df95bf29d8e197b2293ef50971713f8aa30d06914254fe5b67244eca9c255d7. 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/FR6F31301180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0184b01a0478ca6f190965e854310d63530dd24548acf1fa7c74f63b0ff7bf. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR6F31505290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a0f7178a23d60a3f1e521280b0cc3046f81fb3a42f42f2d65de9b4decc557f. 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/FR6F31505300.
Propaganda (Toma Fetermix Remix) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ef8a3394022b670690885e5aeb49bbab00054c981f1c62fdb3d2c9eac102fa. 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/FR6F31405100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bdf075124b82c636318518654dd2d84d2c9323d32d541757e7847d96fca436. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR6F31301190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1fe708d47f5e06bf01431e4f422e2a9d370bf728a8a6ffca58a92b8e23e292. 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/FR6F31301170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a66792d780599557c9c7c4dcaa146c97c2215b91ada4d6cbe2c5a5ca4a24db. 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/FR6F31405130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd261e9ce3b2e8200f5cb31f33ad69d0d5ecaa68c62c6d7cb4a5de5bf01f9ad46. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR6F31405180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1cd7c7450a979a464078de58395c01dabde3d68c281b4e388855c5bb00278f. 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/FR6F31405170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b6d453c043cb80294a0ee82cfbfc4e9e80a806e739aa83088cd6bbb582fd19. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:39:41Z), 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/FR6F31301750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df95bf29d8e197b2293ef50971713f8aa30d06914254fe5b67244eca9c255d7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR6F31301180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa037d6953cfd773980fd0e7303fe87944d3b200d2e52372d17998078b929f204. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR6F31505280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0184b01a0478ca6f190965e854310d63530dd24548acf1fa7c74f63b0ff7bf. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FR6F31505290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80957d6d1987ba311c90720d3266805895407080d6f4965355b28d2450528645. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR6F31701240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084a0b594d666b3f50fb70d04b8af46d1aad9d2babde35c828ae93ff162a204b. 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/FR6F31701270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa81186ffa68196493cfedaec180728ed42e68c109d9a7c8eedb947b08a99cf6. 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/FR6F31701310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4ed62599d72b0edf7f66d8331655edb0a5243996f3609bb8e557697002dc71. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:25:31Z), 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/FR6F31701330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefddd7993f688244485bb976561972e31bac328a1e0c1d0e7e7cf49ca3fecb2b. 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/FR6F31701340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105d01387de0556b7381650b44d3ecf6dab4487f6d452e19387d2c0c77fcb0f9. 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/FR6F31701200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fc53f60c2d7cf9326136e666d14838395b81986f3e1c8051b92bf010b47d37. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR9W12350626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda4c0fabed718ba9d7fe790837ada4e2b9d00b8070a4a55d16fbef269865f08. 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/FR5R02400744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0356a3451ca27f8b32efa48d8688840544997f55ee76ae15dafe91f53bd26ed7. 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/FR5R02400745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bfe96225bfbd938efd99a763b78fc20c3e2694e78a7c78808bef37414bceac. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR5R02400747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddb597bb666e8d39808e1ff63b4f23119559c7d4dcae6aa61573810b35106bd. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FR5R02400750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546ecc99a95f2ac4ce99d5af362e6302ca981f5c1d23383907481a52b3e4389f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FR9W12549610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7ee19a882755573632923cc5afba264f20711af3d187f898848daa4ed0208f. 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/HRAA41901269.