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 0x6e0915defe31821a5e6a1f0cec9dfda887970a47aaa797c14e8b65cd4bf47f1b. 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/2f4b1fc8-f629-4aad-8917-95052f76f095.json and https://artists.proofprofile.net/proofs/artist/2f4b1fc8-f629-4aad-8917-95052f76f095.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Episode 7: Massachusetts (Rund um die Welt)
Episode 10: Schwarzwald (Rund um die Welt)
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 0x4d7a251da6b53c805e4fdbf2a819034703c01fa0760040bff4137093607e3d54. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ60694119 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ae854511e4f91ad221b4620fa69499511436651c366c702575752a1a34cc41. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXQ60694120 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9212d3569be99e2c7496d7c171c7f915891b615ba4010b57e9b261b40dfd80. 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/DEXQ60694122 — a six-check JSON result.
Kapitel 02: Puerto Rico - Rund um die Welt mit Fuchs und Schaf
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b5922d14e0a847c376849902f7e308bfa749c3208a0cc5424e944360fb2d0d. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DESW12121580 — a six-check JSON result.
Rund um die Welt mit Fuchs und Schaf. Puerto Rico (1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2ea8e86ec0abbb86db2109deb75fd9b7aa777f5c9867b7394acd47dd56d57b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM52312500 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94872f78206eb5d364a1ca2f575cedf0cc4afce709d22a4e1becf0288f542948. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/DEWM52312505 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdf2bd67e5a88f7fb9d9e9c713f83079580a664080a7233f725c079a76ce776. 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/DEWM52312509 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d0209c77cca26693b11fd41e3cce6a60dca3aa4fe6470e6d30937bd5ed2fab. 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/DEWM52312516 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05916ba178024120d56da0cfc4a7dd59dfda48db0471f459a1824d498919bf5. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/DEWM52312520 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeccba3f414e131acfdf4ec6250067832d5e2d0079a4bb7f56d83aa0bbd7a452. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/DEWM52312525 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f74c2e7e6757f32a44bafcccc37bedf31422f1e609cd95a0dae125c7f365758. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/DEWM52312529 — a six-check JSON result.
SPEZIAL: So ein Schrott! (Rund um die Welt)
Rund um die Welt mit Fuchs und Schaf. Great Barrier Reef (2)
Kapitel 3 - Rund um die Welt mit Fuchs und Schaf. Great Barrier Reef (2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204ee2efba92e1c504c4540c78846cb67236b5fa14d4c65d87a3ea48285cff3d. 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/DESW12123875 — a six-check JSON result.
Kapitel 4 - Rund um die Welt mit Fuchs und Schaf. Great Barrier Reef (2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda5043c955d53cf5f853e95cb9a86f512f06092a51eed9d96795b20d3b2b1bc. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/DESW12123876 — a six-check JSON result.
Kapitel 5 - Rund um die Welt mit Fuchs und Schaf. Great Barrier Reef (2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4f410680e996529cb8dd415740e72f73955f5bca95aef85590efc317238c93. 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/DESW12123877 — a six-check JSON result.
Kapitel 6 - Rund um die Welt mit Fuchs und Schaf. Great Barrier Reef (2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c35654c0998d306f3918054fce979d10536cc69f80dda0224758baec90ec57. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DESW12123878 — a six-check JSON result.
Kapitel 7 - Rund um die Welt mit Fuchs und Schaf. Great Barrier Reef (2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda3101905dc6036d8704421d5ca337ee64fa55ebf81587f42da8f494bd4b136. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/DESW12123879 — a six-check JSON result.
Kapitel 9 - Rund um die Welt mit Fuchs und Schaf. Great Barrier Reef (2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3548f4d41b294ddc823fc759238b5f0c385bbfcaa8fca1a97a4a292299182c27. 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/DESW12123881 — a six-check JSON result.
Rund um die Welt mit Fuchs und Schaf. Brisbane (3)
Kapitel 4 - Rund um die Welt mit Fuchs und Schaf. Brisbane (3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69dd02176837ff45f1cbcf82bed19d6f04f863f7c0ae582888c11eb46725d81. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/DESW12123867 — a six-check JSON result.
Rund um die Welt mit Fuchs und Schaf. Berlin (6)
Kapitel 3 - Rund um die Welt mit Fuchs und Schaf. Berlin (6)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb318b4bd3d341668537f9565b209265b5db6bb9ad2a39c3866b7f85d14f6c6. 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/DESW12123840 — a six-check JSON result.
Kapitel 4 - Rund um die Welt mit Fuchs und Schaf. Berlin (6)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceb82735f2c4f3172e851c6339ef9742e5a14a99ae142ce5907eff09e19a104. 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/DESW12123841 — a six-check JSON result.
Rund um die Welt mit Fuchs und Schaf. Silberberg (10)
Kapitel 2 - Rund um die Welt mit Fuchs und Schaf. Silberberg (10)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283948ea253a252b1af4dd8eb8dc3eb195c7bd7f838eea91b35164690d1618fd. 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/DESW12123805 — a six-check JSON result.
Rund um die Welt mit Fuchs und Schaf. Machu Picchu (4)
Rund um die Welt mit Fuchs und Schaf. Kapstadt (5)
Rund um die Welt mit Fuchs und Schaf. Reykjavík (8)
Rund um die Welt mit Fuchs und Schaf. Småland (9)
Rund um die Welt mit Fuchs und Schaf. Inverness (7)