Killa may refer to: Places Killa, Tripura, India Killa, a village in Degana, Rajahsthan, India Qila, sometimes spelt Killa, an element in placenames in South Asia Killa (Aeolis), a town of ancient Ae
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 0x3870923c22120ea12117afb64d9c004c2bd70047083261d0a5a1dc4f1d504d15. 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/4c6abfda-2816-43fa-8df3-7c01317c7e13.json and https://artists.proofprofile.net/proofs/artist/4c6abfda-2816-43fa-8df3-7c01317c7e13.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 0xf6d7cb1d0b4729e8fd09e10577e6bf70a736f988343499ca4b8edc776f1a80cf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ATAJ12300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8e3d918f9990e9b61a76f8f7dad1772a10f6354135efe2d47a539e879e237e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RSA222305602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cc2008ee1bb67723e3056fb02c716ffc2d75d0810655badeabd7c182574a26. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RSA222307376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1dc82c37dc958be26accac15ab71e0fa2c8dd77847fd693350144865c24e31. 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/RSA222307377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a259eacd8c281b6ed0324ee21b2566b674be81561d7874a0d7482acdd034e4. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/RSA222307378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52d07dfb51b20426e0c7edfd8260b3ca0ef92ac5bbb574d4eef4113f4ffd43e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RSA222307379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14d9f324616d8e07011a442a1826a80bd83981b477afe148b373b0cd5b0a95e. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/RSA222307382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed766c5693dfa66ce35b7efbeaea1f15d8164c8a9e78947e1ef67e0e69042c1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RSA222307383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabd027b14d01d59dab23d8ed90731068a8e9506edc5632e7c8679320039b063. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RSA222307800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b380085910a0ce505a0b7cab5067914213b8c4ac3c798a86dc18048bd0e311. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ATAJ12300642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd24dd628e2da6d9113aeee5c2fbae8a943efcd0ecd8e5a01539b3a070f574ba. 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/ZAEI71900546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be10bde9f63abd506bac8c31b58cd7b0c9d441314e1175bf27bf3c49a6ba5f7. 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/ZAEI71900545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29aea8b5e894d9508197c95a793e11442da67abb1a376556a831252df39a7fee. 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/TCAGF2297281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f7f50daef801502149fd2c90ab4043861a90cb8f72e76c2ded8965cc8ef517. 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/FR6V82435866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcd24147acde334ebbec1fefd736a0833c748e15506a77f06736f5fcd04defc. 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/DEQ120405153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46545730ccce8cb6e10ec5b112d8d48006296224694cdfed570fcc98c164b65d. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DEQ120405158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65703a8c6377799cd3de4f5cab7ee145ae1b4f5e702f0b7d8afe074dedc7f19c. 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/DEQ120405161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0dc6abf07bc4b9fd1bddae01b3024cd6b725bedac65923f0462d7c1d136761. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZHZ42043148.