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 0xfe603b2fa7468686702e9af7900c5b8cbe41db839c6265dbe0d12d6d5587b976. 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/306bcba9-b1c3-41ff-a756-071dde057f37.json and https://artists.proofprofile.net/proofs/artist/306bcba9-b1c3-41ff-a756-071dde057f37.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 0x8b0d7ab1565966bc3f41fee2ec15bdedc0fbd4fa4899bb312c7e006ca1bdd2bd. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DELT31301984.
Auf dem richtigen Weg (feat. Manuellsen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd937bb5ae184d348f03eb4e6c9a4e1b4f7247275311c0635deae4ef5b28ddc48. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/DELT31301991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9363db968b9c9c32ec9aa64063c4276abbc85156a38a7f976359746a2fd40f2d. 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/DELT31301994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec10382bf1d947b21a3de6105dd2dfcd6cf92e25caae2821cf66a4876492ca8. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/DEVR31600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d6824bdb041f90880b9796782e438de34eacc1fdef87724f3111c0cce19404. 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/DEVR31600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fddc221b4bfb74edde142633bc5691a65f7e9c8a6b089b3ee5d10de3cbc5476. 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/DEVR31600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8743e5698677d06dc32881ba81a6bbac42ce9a8bb6920d16de306508c8f3a1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEVR31600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351afddd9d2352a763f40fad3fd86088dbab6582f225f47a34cc5adcf131ec32. 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/DEVR31600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6955105c64ad61fbb7ad33260c1af6659173d297324af964cb5fdbb5f0ce056a. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/DEVR31600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e292353d61432758aff2202fb0eb409e3a0ec37571575598b0fa7dd78c2565. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/DEVR31600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c56df49b2bb9b8f49762bfe81a5bdb582a93ab973fb007ef7cde8501c8e5b0. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/DEVR31600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a80e309c9dc825969aa60b1b028dd4ca84b278d4c6200fc457d349353a42be. 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/DETO31800179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9012b87030fd141f6dd745c6104c4139e54501f642c3f4de2fdc1b2b20f15e2. 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/DETO31800186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae9e060b2b8a971852020e80d71d7a767ccde772d3e80854fd45d0889a891f0. 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/DETO31800169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f820a0a756ee242d92e8f4b2b627831388dad49ca7b1e79d8bfc93b4ac8bde. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DETO31800170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0cfe44adf2df57993e111283ad91ba08487607481cb3007761b296fc08c933. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DETO31800171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ed70eb354a1232d4add6c634b63c617f31a3f02796336f5a665dd687823b20. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEE862001573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63650b23128550f967a8fde15507668cbc7853843b845f9b475c000e8b57783. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR2X41736415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ffce846fb840d6dff11a665f58e1ef3a5b5a1263a29e9be17c06f84d71bd80. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/DEWC61700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d0baa7abe42a4fcca782e480d87f257aeea8d05bea0c58e81329c373d7fac8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZ470800843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02148bab2ee17a751c0fa258970cead6d294f39b2844feb5dfdc4ebb6684a088. 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/DEBL61055811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb118f38c769ec7f49a9c30dd77a9c4a4a0fbad8e4d02703673c29ca67f6d22b5. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/DEBL60600543.