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 0xfd2b09081e0329276a422f0b0fb5fb08298ba95d83f0189c2cc36ede540c14ec. 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/435e8837-1e48-4766-ad9e-61884c156be5.json and https://artists.proofprofile.net/proofs/artist/435e8837-1e48-4766-ad9e-61884c156be5.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
1 - Der Feuertiger von Batavia - Titelsong
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 0x165a331b7969e0ddc69ddd4f8eab8ee117e62ccf0ab62d46ec7a20738c4c8aa4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203662 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 01
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61aef0d86e36909dfa8a56c52bf9555a9b236614da039600e0033e0a1de6a1c2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203663 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 02
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb47ec378fcddca7bd38eda79c8d954efc12f653670d3fc2f67ba46a03c843e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203664 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 03
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a82ad94ae150ed367aa3ccc41942e6241343ea6db71bebca1fa311b51ba908b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203665 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 04
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6120e5174b019f8469ac4525d0c2b0cfaa1a5b2de5e76747796da2957bb3da4. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203666 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 05
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adc202f65ef3ca45c57489e8e6ff024cddf470921211c9eef90d8a803afe99a. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203667 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 06
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec04e8def3ad1d63dfba1579b47587ac2328337b0e860bf81486d124dc8dc62. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203668 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 07
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070ac6ab814dc8053a2f2e2a03d706af43004a8ba4163d80fcd78dafc58c7c52. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203669 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 08
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114ee9788ed6c28c00712b77a29483be36b4f781f6c3801aa839ffecffbdff8a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203670 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 09
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4e1a9eeadbe6988d430ef43e69642890f7d8d0ebba152e7e15becc9e79feb2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203671 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67668a763aef69c7fa8c45da60b36e257aeb2bfe953be434db270fa016b0cd94. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203672 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd899001176e6352f24bb54e7f76a4ac4d3521feefa37783aad05622558554efc. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203673 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 12
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56ebc8d1be35139c9ba1e0f763359f7861be6d60e32da2e7dad7465512c10c6. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203674 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 13
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f396b06cc4a5fdf30a1230672082bebe6ccefb0d9ec1ff5d8ae57f4421c0a5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203675 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 14
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045bafa5a23dfe115d70d270898599553802170109b6ca5cea165ca66b8c3ba6. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203676 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 15
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa105bd1133e9239181fa868a8ffce238cb97016fdcf360d99840eb9c35ef273a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203677 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 16
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc809e0dd359d87290f1c213e1458b405ea4d031eccef059371601b71b74ee74. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203678 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 17
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19af9861b8a9ae9d656d69885aa1cfab53df2102b98086f8d2833c0564c67765. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203679 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 18
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c82034a7c42bef3d4aee78663670364aa8ae9a7aae97980333180b08bfd473. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203680 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 19
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd491067d153ab6443ff610ffbc083d250a8f93fc9660402c0a87db4a103b5992. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203681 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 20
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc013047964e537f1a3e7dfe476d81aabff59dbe26ddada1b45ba7a482ee43ac3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203682 — a six-check JSON result.
1 - Der Feuertiger von Batavia - Teil 24
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22620fefd0e335a0197920d7620369480a338760a3fe8a9dfd2c332ec2f90031. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC712203686 — a six-check JSON result.
Folge 6: Die Geister des verbotenen Tals