Kura may refer to: Places Kura, Iran (disambiguation) Kura Island, Azerbaijan Kura, Nigeria, a Local Government Area of Kano State Kura (South Caucasus river), a river in Turkey, Georgia, and A
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 0x2958a31a236f7eccc923cc1e6652d829286890427c3937810c44bd7cf6b15dc0. 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/d8c86da9-2464-4323-8cde-8b5c41af2490.json and https://artists.proofprofile.net/proofs/artist/d8c86da9-2464-4323-8cde-8b5c41af2490.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 0x385f29fcf6a50db8d1514c798d03b34b123e54d59c518f73d897b4a680a15a57. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2325478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daef80e22d9f74923da250dfd2d99bb2c47cb27c695f8cca16e739c39161590. 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/USA2P2325491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d94a8937c82ec834f1e01a5be88287151a9c431e88c8858d7f3a69bff400f31. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2325484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929375f5f715c6039373a39ba6bd67931a4e5f8009e47b97b9094eee5a2f0b4e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2325485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ab3eb18437cbe50e2e8df793433e6339fb3ac31ff7e5a5fa8884e326911807. 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/USA2P2325489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ec6964256cbd3ab4e2502e129c7cceab28b1e5a7d024e73e9cd83048ea5c6f. 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/USA2P2325481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca622dcb141e8e9e12bfd2ddcb36098fb2f642a1e5af0424c1eb0a314ba7eef. 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/USA2P2325490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c923e34b200c1e7fa2dfabbdbe0239f5668b24d0ecd0e08d1129d2a99cbb87. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2325483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9a4a7609865732dedbb369d1f107b0a2a18aae92a29c5f7ea8c61a4e7d7ecd. 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/USA2P2325479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b76f080561567c929a10a2ca538102cb9950219cc91eb6c4e17472a7eafe813. 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/USA2P2325482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f32a1ff0b560ce5f8d0bc36a9fc1e839e1985f459bef7db778a10db24040969. 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/USA2P2325480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f52d22d28d53504838f7663340da417e57ba6023014c7a9d241a919dbb56ed4. 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/USA2P2325486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019cab6c48b60467ad7780f70d542171fad2e46f3720edbf898e7c5f402f1197. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2325487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9901292d3231ede11a5e1645ccfa074e89d6054500bc8c01aea1ac6563b09fd8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2325488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a5e5149b8027a8a8cafcab2246a5fd1504d85d655e1d4e607264fd889e3930. 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/GBRKQ2227705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7bac04e7a5599484de6b70c523d2207b080f9d19a2163b419c45b9c42e867f. 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/QZ5FN2241993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b9f11baead1c120d306c19e4ceaa1835d71152ccbe28eb22f17d20bfd3e4b3. 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/QZTBB2388574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e4b7061b613aa009c8d0f24ee5dc57840a128afbb7959e902337189c71bff9. 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/QZNWT2321546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c4bdf654cb345a31b541c46eb9451b3c91f4f2e9b3051eff764ae62d701777. 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/QZTAZ2237589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cf603eebed125cd5339395a6581ec0afdb222c07f21cdf90287c97a629b17b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZTAZ2237590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348f2240b9ab94ccd059980e2736a7ed010f3a039cec39115cfce50f20e55026. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTAZ2237592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a927d62d40a9e6b85e40e9cbaf77aa706f989cf98efd410b22d859c27c62036. 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/QZTAZ2237594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30c9e0c891b14c468f529cb6736b9c195ff24b81defaf92f064d2b2130700d3. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZTAZ2237591.
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 0xada10d5ad2bc2fd3199afbe0867acb0d7b368dbcad59f476679599c15f07f933. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZTAZ2237593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32292dc816ad293f81596823f2ef4be8eed1c26c8860f1334a5941c99e6626a3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6J2272544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097a00c1228149dc2acc7532ce35e426a00e7c2130ab69244c3e870b58ac9d09. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZK6M2255226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25021941adf1f6c403a9bd3b0ab15cb015258659506812dfa4f5164cee63ca0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWV2164676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709e3f46eae8932a14e76b3420131f202d27ac0efa731c7e555d1d9728df3f81. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNWS2142954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d22553567cad69f9bb5d6311a405072244972271cfa049a432d61377576f79d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TLVEM2458579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7774e18d9be3784ebbc7cdbe9838855532a566e65f14c88eb2fb7edc455c0046. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZPEW2473855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e6eae43172ae176ce5b4b84c5bcb401e3fd86625a68743798e966cdf364998. 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/QZPEW2411085.