Kirna may refer to: The Kirna (locally known as Kirna House, previously also Grangehill), a villa in Walkerburn, Scottish Borders, Scotland Kırna, a village and municipality in Julfa Rayon, Nakhchiva
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 0xa3cfc9cf6a47d47902c10d99fdfbc93631ffa4b4221ce40d4a1bbbb655fcc0e8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76c8cc17-3a8f-4c26-a671-5b35241593c0.json and https://artists.proofprofile.net/proofs/artist/76c8cc17-3a8f-4c26-a671-5b35241593c0.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 0xee2b59c25c2e75a5aba84b5685633ca19711e5c3e97aaf9793037acdde4771f1. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/CH6540831367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08c1c78a952e897badb1ed19d437c6adc7e2dc06d11b88128c5d2fab3d73d82. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/CH6540831368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3bf2a28abec44834379bea73e18623dc611ea71810ea3215a9d4d99c053019. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH6540831369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d914170c93b80dfb092b0a3c99b80dab864e4bb32b94ac821564634bf219329. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/CH6540831370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c767580398e6424c862cd21903927c8c5005cf60651a621892445da62c5936. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/CH6540831371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6e3bf359451405ab47ca8c3481ef82e4043c0d57ce7511b8d294db567c6bd5. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CH6540831372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07533dd312e473aa888e6d23a381a0deee7b76ac1b05a26ef01a14f36d023514. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CH6540831373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f81edc88c104c2a1f9ef36fcd51cec79b906fcf1af5d7b5e9e0017585e93ac. 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/CH6540831374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a14665b940ac2bb192c5a46aa2ad9936d3c6b0b36d9b7ace0fa3c9fd469ed6. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/CH6540831375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b77357a0f0394172dfb8270ac7e9c33425c3bb7fa85ddc576524972f801752. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/CH6540831376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca61e373979c2eb70fca8fcd64a97c1e62f0ca76daea0d2f4f6936ec79f3afd3. 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/CH6540831377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f39df768487b8b2783233b7dabb50a0147c99716172e1fe8e21141a3f23f3a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH6540831378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6908c233b7ec27dd9e0518e711d9c31dd18f2951ef2c03272ae8fb1090c938. 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/CH6540831379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332f1c0707410420d60a2166b975cccee74216be53b00119a89df0a1df6ac5ac. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH6540831380.