Sirius is the brightest star in the night sky, located in the southern constellation of Canis Major. Its name is derived from the Greek word (Latin script: ; ). The star is designated Canis Major
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 0xe52a4f6795b7878d03330fdc80d555b3fbc0a3065fadba203ce8b672c74f617d. 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/76769d70-c083-4ed6-9b1a-de2a09a3fc79.json and https://artists.proofprofile.net/proofs/artist/76769d70-c083-4ed6-9b1a-de2a09a3fc79.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 0xebf3273105ca5fba1becdb56416fe77b102ea95273a8ea3586db7a613949ff6e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZHN82057616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc657667c1cf600df1897161a84e187abbe8ae0bd2d639b7c613fba25e8723ef6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZHN82003549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12584151e6964df76e8045bbf2e01a9705bf48c32a767faf22bcae870f379645. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHN72099057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f12f77a2956305f81fe8e973e19dc5af75a7087f5febfe61d74daaa096dbed. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:20Z), 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/FR59R2133504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfb566e900f436b796fe5656e9e0ee1e06474161fe7260a15b64beae6ef7b91. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX282163431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc275ae04b556d7d88546432a2bd227e0ce5ad6e947c64794d11e12d61308d261. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:00:24Z), 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/FRX762129925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab44f72456a651264db175cb21a37b0bd56b4523bbea80828e664b0a51231534. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR10S2203945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675886342946cf6c5d0b9fe9b678394433829f3f807986bdbf7f1048b7cae949. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X42227283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e04f1aa72f399402256ab1343e9854dca50be99d0ed3b56c5cee73bd57aeb3. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:54:54Z), 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/FR96X2355192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a4520f45d6de2c9cab99eb7ba501dbc8ae3598c24292096e4befca124b2adc. 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/QMFME2358489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3c038a683bd0e122249e6ec0fbbf4565c5097346a86284ed15bbafedfa99b4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFMF2334319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50055c248a65cfa26ecad5d17e2a6350c5a672e2927d97efc95734368631ad4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR59R2504514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067c10b3f211b49e09e8fb5b3b8d35ad42ee18fd9974fcaf02c8b6882c5b4bb0. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/FRX282566753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2391370d1e826b0982cb9dcd0b45a1948451514b4dae4042462d63926fa77ac8. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FRX452547394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201d32703cc19d1b989d592a74fa6539352c0bfc69cabc487db0d8c3896d741b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DGA062507074.