Xara is an international software company founded in 1981, with an HQ in Berlin and development office in Hemel Hempstead, UK. It has developed software for a variety of computer platforms, in chronol
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 0x1838c3c75c6c33dd3ef1a53c0af95b0340e96db3ac3342ae386f22dbe5132134. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0d9142f-d257-4e75-af15-81c43030b0b8.json and https://artists.proofprofile.net/proofs/artist/f0d9142f-d257-4e75-af15-81c43030b0b8.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 0x01f8623a977e4768865370a0248aef4506b718a5e2cbdc8312b01afbb9b98c4a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GRSTY2102150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053d8145fd1281b2b04b35b522c935fb373a5e9129874126cb42af17ff4e8419. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GRSTY2200544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d800037a01bd0645be7269571ed5c99ff7fb8cf219875e61ab0ac770d0b2dc3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRSTY2201557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f77a20a2984b9dae03e873154a7b48620614bea95e0d803b92300f9ff952cb0. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/GRSTY2202508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24b613df7d7f1a31ac2949cb120c869c6e703cf28d0fd1ec8161f92ea8b27fa. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:03:59Z), 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/GRSTY2203667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638e6696fa99b5c9bd3ba7c16e6bbc1bc6341471a58db9dfafba1514e5d33e99. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRSTY2300611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdaf60ee8bab2830b02b35702515c36123e6726c96138f993fcc8ec478297c8. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:59:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRSTY2400903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b60ba61f6c3e871e24f3308db65c4cb90f9232d5c2b562f277b4a8fe9a90a0b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GRSTY2400905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f6f57a4470f4ac082e527e3a8c0eafcd4628fc76796ba472233946b43eaa88. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:11Z), 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/GRSTY2400906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6ab6de2004807acd14defb307a45341d74ae0c9fbd8eeb97d170c8981e950f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRSTY2400910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7d38fe955cbdd9ddc033cac99f104b8bf91f69093a3f80900605d1f709a075. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GRSTY2400911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda65053dbf0d5cb57bc440d09a65266f39f0da9b0a8a2a230260ccff13c8526. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRSTY2402060.