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 0x4ac85aa4bc5168fd3143cc097d29b3c86956325369c231cad57448e498486a48. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e64fc163-05d7-4adc-82f4-a88457fe25f4.json and https://artists.proofprofile.net/proofs/artist/e64fc163-05d7-4adc-82f4-a88457fe25f4.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Overtüre - Medley / Live At Expo, Hannover / 2000
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 0xf7c1aa74a97f9c69a3ba27c350eaf720bdcf9dd5932c0761adef76b907b48193. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEA340001933 — a six-check JSON result.
Nach mir - Live At Expo, Hannover / 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71cfd905f206d418dcbb7fea66d45b03cb0fda62173b8e5ed245d4a4b2ff782. 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/DEA340002017 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271a2c3d27b11682426cab60d84de3793aa3c2b13df4fd33bd460a282b21862e. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/DEA340001934 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4153a43a592f75a856ccca109d912abba85d14e4c5956189811db2efdf700bce. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEA340001935 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd765782d8a73744549f9eef2c64d73f0bcaced504b4e52053918f4fc320cdab. 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/DEA340001936 — a six-check JSON result.
Halt mich - Live At Expo, Hannover / 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4120623f9d2ecc56f2699edc4dab7564ee9009a278f5d9eb6f91ef1886426a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA340001937 — a six-check JSON result.
Fanatisch - Live At Expo, Hannover / 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8885db0a616d42f544ad6d96cafd80ebe251813d06178b9f523f51ad9f56a51. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEA340001938 — a six-check JSON result.
Schmetterlinge im Eis - Live At Expo, Hannover / 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb152e26219a255026a2d89388566133ea30ada1131f149523a51e2bdd6aa46. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEA340001939 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630aef425baa1593bbe77e616a8cb91124971c644f6d29029971c7e960479b1c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEA340001940 — a six-check JSON result.
Ich dreh mich um dich - Live At Expo, Hannover / 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b45e1bececbf8e2e61282a573262bebdca5f15e16cf414f7cf47c9818821e8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEA340001941 — a six-check JSON result.
Land unter - Live At Expo, Hannover / 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a34fa2c8b70013e4b39dcefec68834f82b0fd8a076013e7015307dfc3ca0804. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEA340001942 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d20f246c22bdccfe660f37b4c81244fcf58f1f26f6af9874e39b2d31821e9f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEA340001943 — a six-check JSON result.
Was soll das? - Live At Expo, Hannover / 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ecc8939326303f7fce6b1bf1771b7dcfec2c56a50a6591c26ac78640ea7889. 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/DEA340001944 — a six-check JSON result.
Bleibt alles anders - Live At Expo, Hannover / 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3b853ce7d08011026f151d7e85859bb4e49ba1aeea82d1c87351a91b52fcbc. 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/DEA340001945 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff5c1874d48f4fb3f9df369f49a84a783af0ab8ef0aac81024f3deac8162ead. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEA340001946 — a six-check JSON result.
Flugzeuge im Bauch - Live At Expo, Hannover / 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07fc1289e55974a9c6f858b0cf9075ac9ff8b4924f81728d164f36d02106aeb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEA340001960 — a six-check JSON result.
Vollmond - Live At Expo, Hannover / 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dce46dee217fadd6ba074f6f188dfc7c1cedcd850e3bb9d02c6b56b353948ca. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEA340001947 — a six-check JSON result.
Selbstmitleid - Live At Expo, Hannover / 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8619420e0a1c5eddd1c646534de3072040e295cbcfd9c8eeec8467c8059e07a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEA340001948 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fc6e6f5da5fcb3f457ad47c41ae7ebf0aaa2f748ce2736481d93e036b9ee2a. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEA340001949 — a six-check JSON result.
Finale - Medley / Live At Expo, Hannover / 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0058f3bd4d56c0cd8a747ac383d9f7aad89bdc3533c40bc524945845fa3c695. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEA340001950 — a six-check JSON result.