Kalfu (literally crossroads) is a lwa in Haitian Vodou. He is often envisioned as a young man or as a enigmatic spirit; his color is black or red, and he favors rum infused with gunpowder. He is often
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 0xaa27308e1b6d63bad623bcdf07a0466804d8bc496a0ab342a9bb62705265b942. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26f247fc-76ff-47a0-9d2c-bf311fe244e7.json and https://artists.proofprofile.net/proofs/artist/26f247fc-76ff-47a0-9d2c-bf311fe244e7.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 0x8647665b924b8fb9d037f51cd5968fbfe74d231b918ef1bdac051adfc4f80c52. 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/CLKR21600306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2546d128f4c95d08dc15297c0de39669a83a83d3af030193b6cc61cf4168b480. 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/CLKR21600307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90afaa66474ab06417dcc81eff090fa647e1176e4a4019c0b7f37b9bd6ddf30f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CLKR21600308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6157b167946190c03ec0240c972d4b11aedc15adddd0b7c419b6218ae02319. 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/CLKR21600309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a296498f749354d51191eb61c0c9c3e7483745243d7bb7b0a1ef9d3a762bf5. 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/CLKR21600310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961c40228ac011e33510c204245f3b4446b1a02efaec7ff91e97734c792e390d. 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/CLKR21600311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5f41f6bf1a9b257b7faaeb23e4a222c13134550148982996c3567b91b6cdc2. 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/CLKR21600312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7301260b7fa8555c0b28160ebad0558cc01c14974308e4e67f92b2cce44152. 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/CLKR21600315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bf97a3280ebc79005835c5faa3f106eea3208ba4c9bf27993f2f7cc431127f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CLKR21600317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f465e07317fe1cdd688c1b3bb20f79975f7d5b4050b7b0420ac6bae0f75834. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CLKR21600304.
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
Hablando Con la Gente de la Tierra de Arriba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf243f94b5a53801b7a3b9af273984565e15aa4b4b240ef63d11466f249164f64. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CLKR21600305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c27a801a0dd6e9aa24533cfec253d661a8d44f8005869f667cd8b2726c49ff4. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/CLKR21600313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc42b16bb4af87ab2f50e3b0eeee524d4824afc66ea3600d32fbb72612b81f76. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/CLKR21600316.