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 0x4af02b84b190ce92bae557883641977da108b52c9692862a5487da68fae6abaa. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e03146c0-476a-4dd0-9d6e-f402cfca04e0.json and https://artists.proofprofile.net/proofs/artist/e03146c0-476a-4dd0-9d6e-f402cfca04e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Heilige und Sünder (Die Geschichte der Päpste)
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 0x4506bc5b587f53c216cac3b9af45d0943dce86be1bfc4a12d4c3235cb3100d49. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEXQ91110184.
Kapitel 1.2 & Kapitel 2.1 - Das Mittelalter 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714fce2a92405cc14c009320daa6283cf8ccbe9fcf4b69d3475a6db1f860da31. 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/DEXQ91110185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa48c4d40add6b93da7ccda0f51a486959b77e43da19da872662bb7fc92a511. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/DEXQ91110186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927c635fc5bce01c74f7480bff541fe84079f00f52da3dddc3953d5c4e3e4ab6. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/DEXQ91110187.
Kapitel 2.4 & Kapitel 3.1 - Das Mittelalter 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7ef3c014668119e9bf22c2939ab83f8171aeb45a26f3866a9a5743d5794649. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:41:59Z), 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/DEXQ91110188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b51a2591c7cdb809ae028e6b2048580db4f0656cfb52cb79da7749a4a69e51. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:39:41Z), 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/DEXQ91110189.
Kapitel 3.3 & Kapitel 4.1 - Das Mittelalter 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e2550e14d80536d4c112211b677aed4553876769dedbc32744bcef5ea30ea7. 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/DEXQ91110190.
Kapitel 4.2 & Kapitel 5.1 - Das Mittelalter 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc782ec5b1492595f5ab8bcdae7e34d9cf40ddc15792c288a25881841396266e. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:44:51Z), 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/DEXQ91110191.
Kapitel 5.2 & Kapitel 6.1 - Das Mittelalter 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f07a0738444758fd3821d5501e75f86003c54e97a14593e910840c1e1fb2125. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEXQ91110192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c14163b0ee75e325677194a216e3944b23905d57569989f19c5244a1c742714. 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/DEXQ91110193.
Kapitel 6.3 & Kapitel 7.1 - Das Mittelalter 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8d3a88919e531bf923f7388d529ce401714522b1580e8fff23a16445a709d3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXQ91110194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e425adbd8d77dae9afdc0a6f66d31a1301972b1833e270edccde9d5bd6c8cc. 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/DEXQ91110195.
Kapitel 7.3 & Kapitel 8.1 - Das Mittelalter 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3654df7a8b888ac1167b43dff60465b9a59d630c0714ca1185339c0496e38735. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DEXQ91110196.
Kapitel 8.2 & Kapitel 9.1 - Das Mittelalter 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2858dc891ecea170c681c8222ed414b0885a25fbcce66765913845083f379385. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:10:33Z), 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/DEXQ91110197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb017eb8bb45f782f0f00d20d0e51840e8a02f713270a080b4b679a386a27e889. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:47:13Z), 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/DEXQ91110198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b174bc7fdcd640ed35607aa4a1fefb8c52cf897561d4268b0a944a5f5424d8. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:52:49Z), 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/DEXQ91110199.
Kapitel 9.4 & Kapitel 10.1 - Das Mittelalter 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97436673b1715763d2d54951b742fe567d0b4f4e3b4ae07378a86beed4c3be9e. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:16:46Z), 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/DEXQ91110200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b321bd67ea791a44a5a584f56293c543adf522fd032600e75c8e3c88ce098aa. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:29:38Z), 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/DEXQ91110201.
Kapitel 10.4 & Kapitel 11.1 - Das Mittelalter 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbed0adc5b6f6f997ac04456a28e30f812dad763ac70862b49ed7bdc56a37ce. 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/DEXQ91110203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323e55ddcdd6bf214ebfaeb07d09d3e91e5ce69b913208b74ec22d44e256089c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXQ91110204.
Kapitel 11.3 & Kapitel 12.1 - Das Mittelalter 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73acab6661208d4647db545203aa0db40788bdc9092fb9c8ef5bf0ff6495be45. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/DEXQ91110205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee6964b0ddd41480ab9347cffa1cca530785cba293a7f7e71740bb9b697352f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEXQ91110207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c81ebefbbd67bd54d1a31a8ae44736e5d0fe0aa282b083be491e38f3c6baab. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXQ91110209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795b50487bd7429054faefed1b774b309758ff13c01a9ce205675ab5cfd9921f. 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/DEXQ91110213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bb7c357bc880c209465d100fd73925abecca2edbbcf94704cdaeb61e7f5d86. 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/DEXQ91110215.