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 0x6fe365b618cdaaeb81d637864e75f186590c1497432e00eae5956fdf01ec35c3. 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/d83e76a8-6f11-4409-bcb3-ee0f197bb7c9.json and https://artists.proofprofile.net/proofs/artist/d83e76a8-6f11-4409-bcb3-ee0f197bb7c9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Die Sonne in dir (Eine Erzählung über die verborgene Schönheit des Alltags)
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 0x8124d46444697c40d03fd31ce7c8546da6b2a69ec47611552b3061ce5e11dc39. 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/DEAR42462052 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e7a02478b562f8a9ccd93fd751ad10150cbbeae16bb4d6f26e789cac998abb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/DEAR42462006 — a six-check JSON result.
Kapitel 2 - Täglich grüßt das Murmeltier (Teil 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0287720053de0966c5cb0e2399444873a5327aaf7453017072a124b3f80061df. 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/DEAR42461122 — a six-check JSON result.
Kapitel 2 - Täglich grüßt das Murmeltier (Teil 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0042fee541e292d07f6e0c4d51d08d7e70ebbd1953fb8da13001502e89064baf. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEAR42461344 — a six-check JSON result.
Kapitel 2 - Täglich grüßt das Murmeltier (Teil 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d89111067e15c74cdc5ef4cb56af87f983a93447d64f26292137b0d76fd3676. 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/DEAR42461663 — a six-check JSON result.
Kapitel 3 - Eine wundersame Entdeckung (Teil 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3289551d5e75fb8a6ba645e88a155cba2d8df43ed7aeb77285e0bd62d861cb0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/DEAR42461069 — a six-check JSON result.
Kapitel 3 - Eine wundersame Entdeckung (Teil 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46363f0d3d8870833c6fea9821a879a6a7862dd32c56f4fb12332b363cf8bc4. 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/DEAR42461296 — a six-check JSON result.
Kapitel 3 - Eine wundersame Entdeckung (Teil 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d4a7577d2109ec587bd200971be8f19178c9ab44587ff0cbd47aeb2e3b9bff. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DEAR42461152 — a six-check JSON result.
Kapitel 3 - Eine wundersame Entdeckung (Teil 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fff1a684b2f23848461498cf11e80e53db03e540547eb157672f7dcbe00b91. 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/DEAR42461368 — a six-check JSON result.
Kapitel 3 - Eine wundersame Entdeckung (Teil 5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cc510e08f93cd4115f366e34fcf0f89d37d16bddecbd0a83f18fa182e3121b. 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/DEAR42461495 — a six-check JSON result.
Kapitel 6 - Schönes für jeden Tag (Teil 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3bb20d370573c38141b27029189a02265147e0868b76ff7be95b6ea888c182. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42461886 — a six-check JSON result.
Kapitel 17 - Zurück im Antiquitätengeschäft (Teil 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf55a97e808c0b90acca606126ba0a9a5e477523e36c4ca4cc66c89e91c69e16. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/DEAR42461266 — a six-check JSON result.
Das Wunder in dir (Eine Geschichte über den wahren Sinn des Lebens)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f53f101a4063949b5aa3af226e7c8ff8bca28b8d4e11a5019ed5bb682dec097. 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/DE1JN2441788 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff5c4482f5986a1c19bafc13f1c3512002762fc163207780112f8bcba319e7b. 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/DE1JN2443001 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868ea9b9bfb0680addf8b6b9d5a77cde72296cad3f56ffdfe5573eb34edec8d0. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DE1JN2442049 — a six-check JSON result.
Kapitel 3 - Am Ende eines Lebens (Teil 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c104b6fd82b839b007ed9d484b6455b668477f956b35a8c4d9dbe99a0e59520. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/DE1JN2441851 — a six-check JSON result.
Kapitel 3 - Am Ende eines Lebens (Teil 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12646c7abeb49ac29cdf06f2f942f843a15a7960a1ca9d6cc1260d4e368d4210. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DE1JN2441818 — a six-check JSON result.
Kapitel 4 - Ankunft im hohen Norden (Teil 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64302c3c92d3235ddd51d8a1f3fbb308cae5136dddee302666a95725052636d. 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/DE1JN2441777 — a six-check JSON result.
Kapitel 4 - Ankunft im hohen Norden (Teil 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e025fb9bdd860c1d9118c6730f19735b6556535f57936538114cef5a51c38e. 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/DE1JN2441826 — a six-check JSON result.
Kapitel 4 - Ankunft im hohen Norden (Teil 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf759fd6f95331c226880dd44192eb94466cc5342891d6075e538b40c1d497495. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/DE1JN2441755 — a six-check JSON result.
Kapitel 4 - Ankunft im hohen Norden (Teil 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332ae8de8b8884a27c7dd39d87c6bd18c51ae4169c3b8c788133371ede62c709. 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/DE1JN2441941 — a six-check JSON result.
Kapitel 5 - Unerwarteter Besuch (Teil 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c7477040f8fca16faec83ca0e23375afceb8fa6ee0b4be356e57f35a787079. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DE1JN2441776 — a six-check JSON result.
Kapitel 5 - Unerwarteter Besuch (Teil 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb0b1a4f46aed3b6f76b6b677a6543e3416a2fd89785247b1ce8fc7c516ca41. 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/DE1JN2441775 — a six-check JSON result.
Die Kraft in dir (Eine Erzählung über innere Stärke und den Mut zur Veränderung)