Taja may refer to: Taja, Teverga, a parish in Asturias, Spain Khaled Taja (1939–2012), Syrian actor Taja Bodlaj (born 2006), Slovenian ski jumper Taja Čajko (born 1993), Slovenian handball player
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 0x3145d8e738fb79a58fedefdfbf7fc2b81427ecfff844d77ca1b39c9008685759. 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/cb8bc767-285b-4bd6-abca-dedb87f5ec82.json and https://artists.proofprofile.net/proofs/artist/cb8bc767-285b-4bd6-abca-dedb87f5ec82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xbb30c06b27b489ab2e2c4c48efa8810a709ff1fec48b8f6dc14f647066467b4d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/FRX452265440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d04b7da9376c096862b6372dd8ea1e6688e96a36b20e18c0a69ff4177c2ebae. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRX452265417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c382255c539f364c2321629c0fc580b9c3ddbc4efc6496b593e60a178afa9d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:39:46Z), 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/FRX452265416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015e53cb949416e547fae4628b551f88afd6aebf764c96b40da49e77620cb216. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX452268340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9146262c8268f9ccbc9a9e333d8665f57bfc860ebc4d39d9f030f5e4870bd315. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/FRX452265462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad46524b64ab50932c2cd659359a2ec78b80120ca2700c33e5ff1de4c80c561. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FRX452268304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80054dc03cedab50a81fdafe10906065d96a15bf8c4cf8e048db0ba0f744cb6e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:40:55Z), 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/FRX452265441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a317eff05f6d6ae37834ae19aaf07bb1cfa9d9a41d6027e6219acd25129a141. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX452265442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066089a25f75224399e672725e44224412f1af2c286fc9ad61b74827ee1faacd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX452268314.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffdc75cd8a3a899fa1b1e13df33a394a683dd0ce0f51a4b799e398fddfddf6c. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/JPG750800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffdc75cd8a3a899fa1b1e13df33a394a683dd0ce0f51a4b799e398fddfddf6c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPG750800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad60153db691fa55bd6cfc0a6a6867f3dfcb60b8b2b2c57a4c6cbeec8545f44e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPG750900825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd94d59adb2434ac54f5f53e5eba38f32f836ec79679ac1efcd00a210ed3fc6a. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:04:58Z), 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/JPG750900821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96d7f0597b98e8c107ccc29f7644afaa9a3f4250aaa64febe1472c2c07c73ca. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:49:22Z), 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/JPG750900822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802632bef8bb12acb6747e3d130df3dca9275b09b5327ed02238e153ebbac04a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BGA472414112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ba74c9521b6454ae1c4d56c5502f9a67e60c0e2c8eb869fa5a0ee719e39e1e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/LTB100600010.