Arta, ARTA, or Artà may refer to: Places Djibouti Arta, Djibouti, a regional capital city in southeastern Djibouti Arta Mountains, a mountain range in Djibouti Arta Region, Djibouti Greece Arta,
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 0x5df97f445dc9912fb61667d150dd7715d6a62482de68ec61ea13966ab57518dd. 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/4571b828-0a1f-488a-a8ce-d0084ade52b7.json and https://artists.proofprofile.net/proofs/artist/4571b828-0a1f-488a-a8ce-d0084ade52b7.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 0xc8f2ead203f3acbc1efd53c3c89ccb2f8b612d795d83012af0d804eaadd910f1. 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/GX89G2499716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f3c7948c207ea0859b9973bddda1b336660b78d62fc2d83c7b8cb772a8b270. 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/GX8KD2348972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd9cd6daaeea96553ab0eb906e263405f41a6e7c9ec123de2d1ebfc15c6fdbc. 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/GBMJG2408767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e113fdc992eedc8115a4611cd14232622a43033f1ec7dc1288f83b73e8f4f13. 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/DEPI82308978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870521253a47351a30a3bfeb843a777aad43744a99a79295648328cd1accaac9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTAZ2213519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b9eee49826b10e1344efd98402392ffb192151f6998ff2a30c9923774fde43. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEPI82215125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42442f0b7ea013e9a977dacb230cdb5f8e68928cac6572c13f71bbeee6b6b37. 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/DEPI82215115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a55b010abae5156fa33818f9accc3c6db352b7263c4c96190f5f7ddd3235a1. 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/TCAGG2228791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21350c876e4eaa9e587c7539240a2e2b08205e5e3bd78894194c2d248f75dc79. 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/TCAGG2228852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0491e6b1c3eea66b4fbeddf416b6254f960000f665d352fd7282cf525c9815f1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCAGG2228888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6066787cfcc6aec60966f219500071ce63a7825bf601c44b26a35bb07da160c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAGG2228938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6b230744a7934d471b88a216cea003f986bdb639ef2d3b34b5fe6877821c39. 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/TCAGG2228978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04bb746503ecbcb5dee42d2434fedc1cb6e7eb6f95c1bb60b75b82f1d2ea2e3. 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/TCAGG2229041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17878c812714e2707905e8881e7eb2ab83d0e811cf00365892830c48e550a364. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZVEM1852647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8127108e06ff64cf91df30a932fa1bbc544a0e12cc30972579e2b673be380b95. 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/QZNWQ2449812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd9cd6daaeea96553ab0eb906e263405f41a6e7c9ec123de2d1ebfc15c6fdbc. 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/GBMJG2408767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f2ead203f3acbc1efd53c3c89ccb2f8b612d795d83012af0d804eaadd910f1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX89G2499716.