Werner Giger (17 April 1949 - 31 July 1974) was a Grand Prix motorcycle road racer from Switzerland. His best year was in 1973 when he finished in fourth place in the 500cc world championship. Giger w
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 0xad5aa6056efb924156a42c087ac28b5d7b1385bc181eb3faa4064e9f83bc1da7. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbb92600-56fc-4071-8740-cc2834f7fce9.json and https://artists.proofprofile.net/proofs/artist/bbb92600-56fc-4071-8740-cc2834f7fce9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
And The Band Played On - Music Played On The Titanic
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 0x356c59d24febf44900fff901236aabedfb8baee976bf926cc4434ff6869bd74e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079740501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be7de33d21584a504ff44c822ae46a1f1419c3dc8ed71c43b5c68056f52675a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079740502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99fead1a2073f55389ab41a472d4edc3d7b0faea93ffd65000df60aa95044df. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079740505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e55977d13dc2e44e81dfb4138635bbf5ed1bf176d2ead4dba68f402ef8b6434. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079740509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302d484142f994a8511694dd8cd3e71842b432c0b8627b9b1db7c61c7898b45b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079740510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e862d1108a3130a5c43694d5517fe991cb1923eecde58b980a6d0acdf35e8f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079740512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92e9d397689a0214a64e0db58a3311c49b2ce9ad03bccf78888a6c4a81c8c86. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079740513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5055b7b3345c98d8f414fd8b1a6b1b15b437dd87b8d7d44aaa29795aee43f5b7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079740514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b6b2d102e9d33c44cf66ec98b9e25a7715653fa359b18b3ef29226f442a755. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079740515.