Kawa may refer to: Places Kawa, Myanmar, a village Kawa Township, Myanmar Kawa, Sudan Kawa, Togo Kawa River, Indonesia People Kawa (surname) Kawa Ada (born 1982), Canadian actor, writer and p
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 0x72221d00647ab42a6ccbd1afb32f44ba202f25d159b04566f44510346ccda7d2. 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/39e3c007-0139-46ce-be89-b638fb479048.json and https://artists.proofprofile.net/proofs/artist/39e3c007-0139-46ce-be89-b638fb479048.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 0x266c9b9541a496b75ca1345ef8df3c75a9671d40c17ba5bb64ad7e0efe7ac0e8. 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/TR0510600582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7d1ae242b8a5d890d51bf35c15ce0e050a55fc22865790916576034fbe7bdf. 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/TR0510600590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d185bf1afc2949682bd793b22c6727cc848b54b58e6a632e5cd846e851d865c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TR0510600588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfb4e8c884e74415593174ce1fbfa504f58d77a07f282c418f217f1577810e2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TR0510601102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c9f69ea41fa908bfb1b09b1a8b928c97cd619b20705af18c41396768d77d4f. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TR0510601114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7daac1edb0eef009d9bd6614c6b59ad87851f3d6db32d3ba0de2e68bfeb92d. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/TR0510601104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ce3ca35cd64f2bb5d9f49f69f3432725d186d2b65c68dd7e4d2e98f46d9416. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/TR0510601111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88fc04060f174d31d9622e81b107f608f1dbcaaf0347fba8d190f60eaad1c0e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/TR0510600105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff3428df217bcc5dd6e9baee6a957e958d38a98fb539fcb234c5eed79f52784. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/TR0510802139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbdbc43629a35a4d1dfb7becd67f0045e896a367d259269a1a3081b43bbcb9c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TR0510802141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbce97d80ad4ab8d81e195fdf7b13b8bf89d9711cfe1ede4404b9888979d55d2. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TR0510802142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816839c704d36b357feace0002f5a253796758c7ead41aad3c893b8b95ff025f. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/TR0510802151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20709c30054fcc6e4575822ffa34e56c6388fcc6d778accfa06aed25fd25735. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TR0511002492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb889907be3b8f298643866bb03aae5aa6203343996fa95f5833e1f23f24b4b6e. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TR0511002496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4275d104e327c07819c6e1a27273cf7feb0834b6a7083430bb0a9e74a1c1cef6. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TR0511002487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34ffd46bb20fcb6b5704f61d5b634aa35c6f3db9200cf5a7b2eded19d52a255. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TR0511303103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ac4d9c581472a5df4c4c61b571759c10a9efb2603c39f14d6378dae8bf1e1e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TR0511503389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae00d9e6a0b2c6fd2771f4610ae3319dfebf2d970127e01a38fc189bab0741b7. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/TR0511503391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206aca7830024e6ef955ea3c2c03e549d74559a7772ff5c9433c66eaf9394b14. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/TR0511503392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ab2b55ec7739c7480b83027aeb656a104ef0872b5b3633810372896953f29b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR2X42262953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe805d0050757fe77636348e77e5c85ac393d74a653fb0756c682b10f65055acc. 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/FR2X42262959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a80377536b27a605385f43f19761b09d3d900c8bae4617e5157cbce25b8b943. 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/DGA052391970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6385b37e7201ea6fb844e866db9a0153d349e0b6cdd6547a794b8ce87a1a16. 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/TR0510601106.