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 0x84e00d3c5339e4c2644e912da3c1af5f4299a10efd98541aa573397591154498. 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/288a6b7b-d753-4a94-a138-0ec407ca0e88.json and https://artists.proofprofile.net/proofs/artist/288a6b7b-d753-4a94-a138-0ec407ca0e88.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Kapitel 02: Die Strumpel-Pumpe (Folge 1)
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 0xf69618ec3ab72644de8a65f1db3676da5b8082e274db9e7314ee224872c2c0f5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEA472100094 — a six-check JSON result.
Kapitel 03: Die Strumpel-Pumpe (Folge 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48efedb64ca198b36b7cf8060e593249d6d93e6b4d05a28a92cb3595b6ade0b. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA472100095 — a six-check JSON result.
Kapitel 04: Die Strumpel-Pumpe (Folge 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d045d5ba4a64075fdda048a7f8848c14e89dcf72fbb8be205d22727cf173a6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA472100096 — a six-check JSON result.
Folge 5: Das Kuddel & Muddel Weihnachten
Kapitel 02: Der Rückwärts-Traktor (Folge 6)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d63e29e05bc1bb947a453f9e279d24a37241890e55efc7bbd0a185e746c9ca9. 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/DEA472101636 — a six-check JSON result.
Kapitel 06: Der Rückwärts-Traktor (Folge 6)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26e34fc0707b528ee380cdba39e7d16df01bad101f1903ce91629f6ca6901c0. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DEA472101640 — a six-check JSON result.
Kapitel 26: Der Rückwärts-Traktor (Folge 6)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bd26d399846eda743f9d475684ddb22d9d66eb3ab3ae62e34b8f80a27343b8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA472101660 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa86f65541284b0e3637b97211923ab0362abb350f3d5e172ebdd16c7ab8e6c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DEA472200433 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1efb53e5a8dad41f3165b566e4b00fc39f17032b2bdda8592afeeeac41c4d8. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA472200436 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd827bedbae36dd8aa55a9e830a7e592deb09ee470a8ca873e7d38509156d381. 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/DEA472200440 — a six-check JSON result.
Kapitel 03: Die Knüller-Knolle (Folge 9)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dc9ed9bc5454733aea23ee275bae6a70be4f4c9b468b34e87702c38c47ff95. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA472200816 — a six-check JSON result.
Kapitel 04: Die Knüller-Knolle (Folge 9)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e41e8dad52412221e613bf18b11148d2ba0a2576e02dbc8f417452668f98c03. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA472200817 — a six-check JSON result.
Kapitel 05: Die Knüller-Knolle (Folge 9)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6138d054de4b39c608e159d206c291f54b717634a8e78dbb963068afcb2b5f4. 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/DEA472200818 — a six-check JSON result.
Kapitel 17: Die Knüller-Knolle (Folge 9)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090fea4f1e480d7aad5f805d1df1eed2c3bba892e2508092d02943e9b6d7c628. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA472200830 — a six-check JSON result.
Kapitel 04: Das Grusel-Gutshaus (Folge 12)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92376cc37f65a962c1d0aee8fc17653581b4d3f52d11defdf1925e1adefacad. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA472301230 — a six-check JSON result.