MATISA Matériel Industriel S.A. is a Swiss company that manufactures rail maintenance machines and provides associated services. It was founded in 1945 and is based in the canton of Vaud, in Switzerla
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050428055bb8b466294907ab5d03ebf76b9fa7ce8e89c2f17006410d77781fd2. 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/dcdbd0e4-e4f9-4d4d-83d9-baead6ec5e96.json and https://artists.proofprofile.net/proofs/artist/dcdbd0e4-e4f9-4d4d-83d9-baead6ec5e96.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c645058b69a9f5278dfdad01b3f43813c1ecc3cdcd20fad10f0a2f0a05cd975. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVH21800724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6dfefbba882d5d8389e2782562d3f1241c56146f44ae283a3934935790eb06. 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/DEVH21800725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32363ae190b89e19b828f3cadd3a1e70ae1dc7de57cd4b8624555a24b730fcf2. 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/DEVH21800726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25ce881319523fb6c1898502aaf397ce160a669b890d722ca5002177585fbb9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBJX32375031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c6005e8b8dc97e32381d6ad90da0df298f5455523ee6635dcf8f3fa6c80e08. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJX32375024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5688e99a45acc467fb1f139f759902ed8781d0ff3ccb346da807286bb85ae6e. 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/GBJX32375029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa867861ad2e51ae4c875cadf2e34bc3d978d4e52674bebac75f081a32a96e53. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJX32375022.
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 0xebde842a1b6ebae9af244edebd35338d38bffa81a8a8635ed4b22f88cdfaac91. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBJX32375023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15066a3b19896cb23db27676917c2294a34a0879f90f9bb9f371a903aea86fa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEG932401121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5011fb846460d047098d464704df43e0ce5f521b0e9a72ebdfea3e5ef159e6bc. 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/DECY62400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab4d73ee463fdbafc34c714ab16b55bdd0450f1a2c8bafe1194d53a5f01aa2b. 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/DECY62400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a994068dd50550ab45f946ac05479bf75b17f262de8a90458d956bb8399804. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DECY62400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f3d4282e77bca9cc8f24ee68ca9525d0d4e00c0607faba2f7db105a734bc9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DECY62400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d96550f9f8632349cffef995b5ac805048d061de0b355eb3e66f3b68e716e8b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBJX32475012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e22520b7727223881c1eddc7bca9fe7b79f7737070aa114132d5d7c36f5ea4. 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/PLE072317103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0866fde4dae3554121aacb5252a3f416cb44b1e473f3ee7a24a6da8065d986. 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/UKWGH2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7545bb854bfd359c48b06b72b3b2ccf15d03f9078546699dc9f83ff6f4d4ff76. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZXT2250393.