Kaia Kater (born in Montreal, Quebec) is a Canadian singer-songwriter, guitar, piano and banjo player. Background Kater was born in Montreal, Quebec, where she spent her early childhood in Mile End.
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 0x1ac7bd98172f3aca887e6b78c617b5f74f34a1cd480d85e6a24d30cbf88a66ea. 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/b2971480-cc60-4b57-b267-30d82b07ca78.json and https://artists.proofprofile.net/proofs/artist/b2971480-cc60-4b57-b267-30d82b07ca78.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 0x254af337a51fb89bfcbbc9f1e66c12154c3258d8c9de196793172301ebb74ca9. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QMQJB1510003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff66bbac1f09f2fcdd4b25413543be8314080500fdd1c1e3ff9ae2e6986771d. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QMQJB1510006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff66bbac1f09f2fcdd4b25413543be8314080500fdd1c1e3ff9ae2e6986771d. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QMQJB1510006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b6ecbc0077b90dda4b3180782bdf06bf0217234270291b16ecb54301c4d1d7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMQJB1510008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d0781329485b33cd927cb049176e76f276ed7dd1f536475b4e128a1d51f58. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/CAKP31600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d30d115deb5c0047b7d70c91b585172e04c7b49635805134ed880f8ef074f6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAKP31600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d0781329485b33cd927cb049176e76f276ed7dd1f536475b4e128a1d51f58. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/CAKP31600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009ba778de7897bd1b304d9584dcbcf4fe47c78dc2e7d70c2b16ae9ac0e6b341. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CAKP31600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d0781329485b33cd927cb049176e76f276ed7dd1f536475b4e128a1d51f58. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/CAKP31600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009ba778de7897bd1b304d9584dcbcf4fe47c78dc2e7d70c2b16ae9ac0e6b341. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CAKP31600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d30d115deb5c0047b7d70c91b585172e04c7b49635805134ed880f8ef074f6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAKP31600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309071346bd6103234a90b3e3da41d8bf63874a3f05a27c53814f637cc554f9c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:10Z), 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/USSF11823401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293ef6e6128dbe0460366154fbd6eb47c48d6bf398fc58fe5d213cfc9f0b6dcc. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USSF11823402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dcb978ffc51e033a0510f749c0bd7e5025f01e6c630875a7d8eeb6950c3f67. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/CAKP32300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc856e23f90e777b992529c7916c60b4f9b7680340be2a068a3765fd47c720ffa. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/CAKP32300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8494d080f919f506aa4f05e9c4ac379a792779c281bc93733142d70cb517ed. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/CAKP32300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc856e23f90e777b992529c7916c60b4f9b7680340be2a068a3765fd47c720ffa. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CAKP32300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4d052e583a5ccb53ef1dbd80a5c766cf809aea370a0f3174ad5f3bd1fd2405. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CAKP32300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8494d080f919f506aa4f05e9c4ac379a792779c281bc93733142d70cb517ed. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/CAKP32300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a5cc84f4dfc222119fcb419273c9d87a1e455c25917b941d1389b9a276cf7f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAKP32300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dcb978ffc51e033a0510f749c0bd7e5025f01e6c630875a7d8eeb6950c3f67. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/CAKP32300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71d6907be45e1bf182dc9570446cda8532a3eded7d8fec75a1e69f2b19c0c5b. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/CA5JA2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad27d31ca2e4ab39a5cfe6f3229967849b9debd261aef752cd5166a054861c1. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZH3U2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a49f945366388bb34d6012b5877f999ad1af0e941d787c9ee3d5adc4ddb59f3. 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/USFMT2405507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a49f945366388bb34d6012b5877f999ad1af0e941d787c9ee3d5adc4ddb59f3. 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/USFMT2405507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a49f945366388bb34d6012b5877f999ad1af0e941d787c9ee3d5adc4ddb59f3. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USFMT2405507.