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 0x81aa161df45a9e0c9dfdf83801446b604140e3db462a3b2a4d179227b71f1aca. 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/5e5029cd-8ba5-4a9c-93ce-e613c0c0d8f1.json and https://artists.proofprofile.net/proofs/artist/5e5029cd-8ba5-4a9c-93ce-e613c0c0d8f1.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 0x4cf208761254cd92cf18168eab2743154b8e50f839a2fefca65ebaad217aec65. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZNWS2327708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ebcdcfbb5d608f31a4992da9cb6ba25474a27824dbfb8721c6730b65e9cc3f. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZNWQ2159379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ef201b4898baec6a4890c147dfac5bfadd322ad34da78b3e28a302cf84c51a. 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/QZMER2185566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdacaeabfadaaf31739a2c26d56e02babd1d906a40123ae39e1e5e58ce14d0c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHNC2171113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d76644737fd2da8915c5caee55a7b906cee800d6ecce8130739f5ae16b02db. 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/QZHN52117990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb846bfa9ecbaee8f7573594eca54a8d09812b1c8e83065ddda1312718ad9f7f1. 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/QZFZ32159909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d29ac2b50c7155bf0f2e0d81a2a104596a6e655f62d9d742510b3e7029d1d64. 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/QZFZ22137130.
Trevor Henderson vs Scary Stories to Tell in the Dark
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7324f7eae42aa1a89b131c6700dd4e357d65d22da8158fbc3218acf68b13dfd. 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/QZNWT2041517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47908edcc60aa318bc3909f31a46379800fe4ad74bb66f9f30c4fb9cd5ea856. 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/QZMEN2043201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f42b6f9e915bae94c15d83781666ac193a00979ec138ded46bd23205e49bd0. 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/QZK6P2081196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39fad91a7a5e7838ebe5e72c3c3c0c1bd43dd3aad1584dcd3ad72d497386293. 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/QZES92009137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094ed2c5ed1d5f506bbfbcab7963a4ab5230647675437762bba27e42a277f28b. 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/QZES82038289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a89727d02d00da7ff4a8c6080633bc5720fd96d55a5dc5e2ab4a9c3c628162. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZES62072317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa5331b7523ec0dec43ecafa2065b5a3b52e18d93cb8677abe4f0a65bc84fc9. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZFZ52006313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24257634e7c65ea12f7e9b911575673d8bc894cc1fa89e39f311dbf3dd95885f. 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/QZK6P1960086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cdf3f4bf9caefac1e9d4e145e43264c4b4546d109f8afd9346227e301a5344. 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/QZK6Q1939602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dd8572326e329379204894cb9358bbfcc93210b27f87181946c9b97a7b5040. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZK6L2264381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1971adf6b61b5e9fc87b55ac44248ed7536496b0089281c656a3f886405cc3. 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/QZK6L2264382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f93c288759c0cee52d1798c8b625ec393329f25cc74d8072c8b26934c8978f. 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/QZK6L2264383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61f55d0e9385aa477db64cf00c7d3397bb37e3c0a08e56616f92d90b7a49a39. 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/QZK6L2264384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c65d2236ec7adbcd4ac349415cc6eeaac8b27ace330aefb69bced8c6e011ac. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZK6L2264385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1543f63d6429261bfee2e18902d92e95c9fe6394afb2755feb4ccb61c5ec86c2. 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/QZK6L2264386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffc1a8558d1124e4b29c46e1cb4a66fecba254c798ef1e25ebb47858daeee61. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZK6L2264387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cff78c770b13e721a03e96a3faaf74dc211f3e608166d14910321063265e9d. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZK6L2264388.
Ralsei vs. Himiko Yumeno - Scrapped Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa08f34d50a70ebf1c07e9bf2b6fca10baad023fa6029c899f5a2a41197e886c. 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/QZK6L2264389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b631498b0599ebaa18aeb9b0d21a61a3a0f0d0daa4e333824290d36a68c1857. 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/QZFZ22107414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6f28d3194f9ddc7415f28d8ec439de06ae5420152a1a80dba5f9b0408e3ed1. 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/QZNWR2186383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0f1d93cdda6e1def2b11862a4f3054975ac475d1d9250917c7c41da0056623. 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/QZK6P2404559.