Kuru may refer to: Anthropology and history Kuru (disease), a type of transmissible spongiform encephalopathy associated with the cannibalistic funeral practices of the Fore people Kuru (mythology)
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 0x8b19edc4ec6cee5190371c34ea4cda43eafb85381a754952d4da8ccc317ae99c. 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/87371347-ff6b-4947-b3c5-76e37352de7d.json and https://artists.proofprofile.net/proofs/artist/87371347-ff6b-4947-b3c5-76e37352de7d.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 0x2a603009d6e89e5706a6f36fa4f25a23dd86f6377f88c5804fe13a8158a398a2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWFG2332472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec62f22197829cf2574e9fdddb733a48da7c0de555982cd6dc51e29b37147814. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTB42325402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7d987c8638d8da8c73bb34e43319bc2a38cd257a75de771963dc1a48410357. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6H2365894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f295cf3926bf0a3bd7d3e6274b81336f03728ca72c8c981632511cde3156b3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWR2261679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedd5228d7ea775a8f2107681b7aded95d1603d34b3f817d7de5420970e90c32. 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/QZHNB2228462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37eca70aeb119e64edc8c1782eaa3a2df78f4b672cbafa03e93f3afead23314. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZES62272863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cb123a54e6f5fe979a7eb0dceb818312c05bb82fab4e823008802cd6295669. 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/QMB622116502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396c12ae4260928d8254fdfa8a970afbf428b8d35f2d901cb5ce2852e2f5a4af. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMB622116504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb698e2e50704aa0b6aaceb74343b24d0a4052432ec0cac23fe2fa628bea07936. 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/QMB622116505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812d6ae53a9dfffbb431e9034233821b51751006b1af31c6f10b9c4b1448595f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMB622116506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cb123a54e6f5fe979a7eb0dceb818312c05bb82fab4e823008802cd6295669. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMB622116502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7d2a60887fa37de4d2231ebf09f5c107399c1056d988fa71b8a3a7f7d89157. 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/QZNWW2194876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d56d86b7a807e766af8d5f36c79a0d279b2fccc83db259ef804e5a6e27b179. 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/QZHNC2150006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a80150bf94575892c59ee9fdaa4cf9805ee47f27be08ee6b4640b38e4a0fed4. 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/QZHN52166606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa669f393f89a1cceaf6f41568818f4d7d739849bc257919e3cc44b61d9a57e8b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZES62151603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c78c7a8be95a288d9e39e9e4fde4c1db1cd4bbe71d230aa52010efde186e152. 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/QZDA62177905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5135ac2f52ce0d2047089de1848951900c332149b52031db8e92000a5738e8. 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/QM42K2152717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ad04e305ce2fc3b57552b237473b03c4d2d8793c4415f312fd4fcf63245547. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWU2047842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd1b9a84901aa30a5b18e4db2f46be6164c8a5562cf0aef68f436caa29a1290. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMEN2015227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9be3db4cf62f3bd086cd2a4066e6fa127b3c842d361f6580d65365f17f993a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6G2008464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9e9707286b0a82adbaf5cf650537110f2a595b7c1c83f9a39e8a9ba33dcf76. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QM42K1980451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f2222614409cd31e68e318f35b799ccaf4ccc0dba07ef3f89ccf2102a36e11. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZKDK2081677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba56cb15027b02cfb0fc46300ec4bba7d025aa1199c5ddde1dc1024b23830ff. 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/QZKDK2029774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92045c85fb6fb416b23091dfbe1ffbdbe2d97f8de738502a9399dd9c48847920. 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/QZKDK2003618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5bef135cbdc729a6239d4dbd737e2ff27290a7cfa7250e805c8cb43ba1b317. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPLS2396083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62090d6e06044c6c8626beacd658fcd4efd26210627bcb28dd66a52f3d79363d. 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/QZDA62288655.