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 0x65a3c6c0108bb1263fc2c4ce61d710f96d2e9fb4025a36f44b4d5359bdf67706. 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/b9cc4599-c0d6-4fd9-9aab-36fcb80ce34b.json and https://artists.proofprofile.net/proofs/artist/b9cc4599-c0d6-4fd9-9aab-36fcb80ce34b.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 0x3bee8b01fc50405f5b2d2c81e079cea92a44fb784047a3058e92fae5aa3fdc9b. 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/USUYG1412156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051c7c61491bdcbff0585b5ddb1a7a003313f84d634d5afaadc1bc9aa1c6c5c0. 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/QZS652175449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf50e013de41d68db5de35a39f0152a9b31518a4a98780c05690000a2ead7177. 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/QZS652197814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f1e42134b4b0cdc55be6eda4cae2b85eb6108b115fd7443f996a3da8535ab4. 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/QZS632395669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96bf6581fe8f2f489b4d880462841ecaed1398a9dff1666a7c4d308f5910082. 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/QZS642159840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ec6c5d7fa25e9c37d92650ea1516d26fb6dffd925ab42c23aefce2d4d6949e. 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/QZDA62284046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31cdb75e1f7c8a501bcd0e34a9390637f3d3b912034d69709fab4bd62324a1a. 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/QZDA62284047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4638fbb10eb66fd857bf73fa2a9467643b7bcf247be591a01f1927c0c32a0591. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTAY2280725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2771a81c99b26afbfb4693d87440eee59875c17ecbe5d1e7962a9ae4e2d696. 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/QZTB22233819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fdfcddbf3d8c8daa6ddae552a8deab20569309f443424f80dce105a48b9241. 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/QZTB22233820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3cb22bf9a7969213cf6b86add1095c53ae576af24050db99e23f71af610ef2. 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/QZTB22233823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12be4c7471acad1876149f7b331eb19cb0ad47bcb4ee53ca1a48e6122fb7e895. 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/QZTB22233825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628c7752fc044850c61120d519a5e7febba9c47e8f597ab7de8506d2c79657b3. 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/QZTB22233826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064496826c20d4389fecbdb548c8c328f5f1640508158ec64990e8a78bde2ea6. 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/QZES92396875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd514d39bf778b4f4a92f4c48e2800f8efb4b6def5c3715d92d2f10bce0b45dff. 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/QZES92396879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc807122ebccfd82ab219e18c285ffcd4ac928e93183429422c601df91b7db32a. 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/QZES92396887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd41ea8306c046da56c62c55d7f8381e43a256a0dfee5041826b665c6ea3618. 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/QZES92396889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323f110847484d4581bc6d061f75af1cc51b14da7601777e13cf5e3bb1c903c6. 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/QM4TW2296727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967807220133db144619e6c18fec5aa8083164181f4b83143c1f3ceff17003dc. 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/QM4TW2296728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3279ed926f553fb9875b7437bc82906de2973317f0f451b55a32e786000ae5. 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/QM4TW2296729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce2534d69fec6d6dca43166ee36c2270c3a8a91be0abbb88376460e07e2b94f. 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/QM4TW2296731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9e77338c6087a496ed3cd734877af4a8629aad8a39c458826d5459b0fb06d8. 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/QM4TW2296732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96f902b45066ba7ff384f5d58219e5d6c1a602d1974a3646eff6537cc99acd4. 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/QM4TW2296733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301b37fabc212b588655e21a58b036b157dff58fca67e75fb03c505e5e2f0a61. 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/QZPEW2575758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e7aff7805372a578b2cb576b4bf73b210cb800ad860a711f4acd32ae7b354c. 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/QZPEW2575746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc820611be0e922388785bdc2128e271a1028f4e6641ea2e024572809f2aecb9. 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/QZPEW2575750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa548959dc071a2a1e81e5e343d41650c34617176120e5d3cd070ad6154322c8d. 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/QZPEW2575747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffeeabe9480347494c91c11e7a1e686f1c7dd0d081df826be24573f2afc910a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZPEW2575759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a1fe1f9e116ba11e3b057d214297a80742aae0467faf02f97e7e49e92dcc9c. 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/QZPEW2575751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44eee55fd4646c8d35fccb8aa6c0cfb955bf274b249c8ef38db7ce910d90a1c0. 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/QZPEW2575753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725ceedde5c110bd96cdfbb7c47295022be3c6b0de0329f6c286757089b765d8. 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/QZPEW2575754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f1394fe3801a6cc6e7910402b41fe543aae7be6fc51400155e6c16eec5e8cb. 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/QZPEW2575761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ba927a8abf3617b892bc11ce1104f6ace162bf3543d4e56e8b9ca1337554f8. 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/QZPEW2575748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ac095ebbaa2a5226538f620a69129e5615942f176e9d29c7ce749c729017b0. 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/QZPEW2575757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeef14056eb0d2c59d413b90bdea9b129e380a15cb0bc812fe8b8cc04185a604. 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/QZMHL2505063.