Anna may refer to: People Surname and given name Anna (name) Mononym Anna (goddess), the main deity in Old Assyrian Kanesh Anna the Prophetess, in the Gospel of Luke Anna of East Anglia, King (d
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 0xd3e2433a057d806eb4af3a52179bb7cd0fd323930159e45ea5e2bcbda7fcf186. 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/27f46a4e-711c-413f-a886-1c47f7c709e0.json and https://artists.proofprofile.net/proofs/artist/27f46a4e-711c-413f-a886-1c47f7c709e0.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 0x44e4081fe9ccb2ef5dd41a406fd47714978afb31e737e76de9256f12084b4104. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/ITUM72000614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd852f3ff8df4725c317677dc0e79b291af8053912527a7447dec0140ff0a6312. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ITUM72000613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00effd15923944c95e8bad4af6563a1f276827c8be9018261386b89892217a0c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITUM72200906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedf594b96d7d7534423e022686d195bef6a9c95330a56c6279a62d184fd41a7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITUM72200876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bdb5129afc4561e49ea1e558207f7a87b9e5247f13bd031e50ab451b1cb8d2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITUM72200909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62749635ab5f11792adb35dc30f37e1e231572b6f20f54170978de3d5d44bdaa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITUM72200910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc247c833ab11b84a8153922891060f69dbf3349e559810a045196842c7377963. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITUM72200907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32718b9caefc3197e9141a26959c8ba965e5cce964a767a24559acd1edc36623. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITUM72200908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257b6ea124f0f6d8ffe4efde804ec209a9502f00f308dfeeaef9e489ee9a6cb8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITUM72200706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293f992746711de98d4ece70b537032e52a581387593a86b609a1680175b7642. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/ITUV72400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e78fc04db491235dbaec92e384998c47472796989e94a89cbdc2a9564c50b06. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITUM72301340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b1eb5063b00fb77750beaa3683ffd803ec3a71c852c13b81f7a3dc6f210f33. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITUM72000370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aab2b5915ba382fa72b61c7a9eba9b2ddfd71e70f726e8373ac407dff5ed2a2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ITUM72301561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c852f8e37fa9ab6e0a93cb315eb6ac95ab22e05584b1823e8d5cc0b468328bf. 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/ITUM72400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3beea72b253d89198ee99f4915e40bc1576ce1c39a7204875df43fb4f583a21. 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/ITQ002300380.
Global Underground: Afterhours 9 (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff984beb5eaeb3a769f8a3e8a4cdce6335824dc34654ff062847900fd81a622. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/GBHFW2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d422208ee6e6947b2c340e779668f579aa27597783b945e4bf996ccb3ff8dc7. 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/ITUM72101497.