thumb|300px|Dr. Fausto by Jean-Paul Laurens thumb|1876 'Faust' by Goethe, decorated by Rudolf Seitz, large German edition Faust ( ; ) is the protagonist of a classic German legend based on the histo
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 0xc5ae8ca2b185434c84367ff5483f1a06ae7c2867a381f55b65823794eb0b3c1b. 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/396cacbd-ede1-4344-8a75-c5b7d5b9e869.json and https://artists.proofprofile.net/proofs/artist/396cacbd-ede1-4344-8a75-c5b7d5b9e869.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 0xc31a24330e6ee1ffb188ca7b287d7b51e849d7e0e73f9d4a86cebc7eb16c005b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEF067119220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87325d56ecaa0d434ed52be916521b5a9636ff477ba14bdbad8a09c0d5e1b7c7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEF067119230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc4d15690f37ee4761cd5d0d0f697692ed8772db44fda2b8908a905aff3f8ae. 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/DEF067119240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674b842c5ecf3bb64ff5f7a044d8bd01e5f8ac3241a858c65d58172b06d5bda1. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/DEF067226600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a163b6fd82f0b14c703787588356d4da08316aa5f721abbcb03eeb205ff8d3e. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/DEF067226610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf93f924a80ef8359046d92a381f173e7447ec156b862ce96f58be8ef18d7e66. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/DEF067226620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39510ae5e936137aa04a0c1a777f97d1178595578fc5f14b998822e11dd0a29f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEF067226630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3a8806eea17396ee44dc7b7584f779f7e72f700af3c322e458d8497fe514bd. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/DEF067226640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b78f8a21263b9af14040e9e68e2ccbde022088988fd8a63e577fda490e41bc1. 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/GBAAA7300185.
Picnic On A Frozen River, Deuxieme Tableux
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670727e17efe89285d53e5da1074f7d72f12aaaeb56e9f7002bb6adc86289472. 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/GBAAA7300186.
Lauft...Heisst Das Es Lauft Oder Es Kommt Bald..Lauft
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b95481039f51ffbb27710334c803cac1ace16175dc530eba7986a7a1685051. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GBAAA7300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ff3377bf5b2007b87aa6dc82398fdc7674a50cef7ecb180c7507f345b1a078. 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/GBAAA7300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a1a26368c3c70573f9717c7ea1cc6b1252e0cd262e5e8e3baba18bc8323f6b. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/GBAAA0600134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1709adcad2fac8c1aab296476813ac44323f2ba9446dc5677902f78a500552. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBAAA0600136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467522132b0b22d63d2e41470b1286870bb44765aed98c4952a962aa82b142e7. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBAAA0600137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40685f173dac9541f4c041c6fa02e4ca4d06773762acb49eba631b53d3e262eb. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEZ650508788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec3a00af631be4507fc3fcdfdc58da1166c4a7a1a81af21f999a5bf7d029ac2. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/DEW181000341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf786e51eadbcdca28ae2d7a03262b63ea7f4f4ce97419dc822131247c3c6ae57. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DELI51401669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4659d0bea1981f53dedc039b27ca3dbec84122aa96d9c1416880feae042217. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DELI52103303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f15cef73e4c0e543dc44cab5d464a23af389a126f29c4df558713971697e867. 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/QZHNA2479373.
Blickwinkel (curated by Zappi Diermaier)