thumb|Last Logo of Rixe thumb|Rixe Logo Rixe & Co. was a German bicycle, moped, and small motorcycle manufacturer with a factory in Brake, Bielefeld, Germany from 1921 to 1984. Rixe & Co. produced 5
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 0x16938c5e29e48c02fc0f615aa3ec81c0fdf3955794e3a7e2bc944404c30ced62. 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/c41198e9-cc8e-4647-94a0-297588c286de.json and https://artists.proofprofile.net/proofs/artist/c41198e9-cc8e-4647-94a0-297588c286de.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 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 0x5cc5e26aeabf8121245c1d2472f371212830ed0321c165362b751d88f47092f7. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/GBHLW1701215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7903c4a4dc450bc8b849f27b1964d4f73f2f8ca3834bdcbd9f79239680daa6. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/GBHLW1703142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0975907f32bbddd4fedd08bf803adfc51123938d612987222d712c479f40dca4. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/GBHLW1703143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1fac5e09a8d2e136206e15b8708aff602e4fb7c54383b8f858eb21c78c33a5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBHLW1703144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd848d077e8496b22ef1167c8a562fd3d97e34089b1d0f6a3f890cd84745a7cd4. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBHLW1703145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38afec02466e3dc208e977ed5da55e1a2032e722298203c8f0e2f4d86544efa2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBHLW1703146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a062fc4a068fd3911d3affcb57c7048c6df14de6fb2f74149b4a346b4796a0. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBHLW1703147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179f62c1508259165be4f60d4eb7c5a3b0afebc1cf2d182a557bf4635d8875c1. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GBHLW1703148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789488c63a8d0e59c770e4cabea32eebd4462f536dc342c186a1949ed888c8f0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBHLW1703149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a909b082b41d2fa24f7b2c3042d4023b4352e51f5690b6647e230c5708c799c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBHLW1703150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf4410e978fa59558e966f6187cb85b07cdd5e3bd1c035e3588d887041700d8. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/GBHLW1800430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50758f12ac9c318b01df8aa1d8a1477141d612a1048c37ead3aa3383bec0a23e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBHLW1800432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1222f8b39bb09573ec4deeea757a813f561c83b0766a755e58ec32218e339ae. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GBHLW2401280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079394a6baba49af37ce98cdca20a80580bfa5d20bbb122a6077b91d20ea0257. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBHLW2401281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfc657a67c00d48a6d0e02ba183750f56a4a30db571fd037100753380871135. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBHLW2401282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1d8a1a608dc1948d349dffd6e6f3761c5ba74e14fbef157e29f1912d5165ae. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBHLW2401283.