Kelsey Bahiyyih Bulkin (born March 25, 1985) is an American singer-songwriter, best known as singer and songwriter of the duo Made in Heights, alongside producer Sabzi. Early life Bulkin was born
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 0x558ec0d314783e6d09f429e0c94f324292692ae5ad682f9814d77c3fd150dc41. 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/b571ddaa-eec7-45a9-bc8a-b021b5772c54.json and https://artists.proofprofile.net/proofs/artist/b571ddaa-eec7-45a9-bc8a-b021b5772c54.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 0x7b659493b297b89eba2769cae613b92a4ff0e964d23eaf3bc917f85e278c82db. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:37:19Z), 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/TCADE1705561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b2d5f50fb2ef6c26fabe92830ae7e8672555661b5513ae25a846e625ff731a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCADI1763727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b9a52f9a153015442babdb911041f69dc5c4c3bfc566ef32b73927d95a6e96. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADY1894247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab23aa425a195f9d8cda4ea827bca872069497bc4e68358a6f69f2986019434b. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZWFX2545777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b843b94fb0fd9b52e3a8273015495fae817f3bff939d9c8a5c2007ec77c5928. 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/GBCFB1700217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b843b94fb0fd9b52e3a8273015495fae817f3bff939d9c8a5c2007ec77c5928. 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/GBCFB1700217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913da7c3e129f7e0fab4a781c4b175c05b6709d8f104bb092155fa14fbd66a78. 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/GBCFB1900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e523fe8aa4bd6c9d3d820357fe132414b5cf11edf1412257e1bb559704e9046. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCACJ1583804.