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 0xa60a1cf65b6035ab36242b7d876f51dc1f0b37523829de7ca3a08ee941182f80. 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/947bb5e4-8994-496d-9f2a-c8f13102c368.json and https://artists.proofprofile.net/proofs/artist/947bb5e4-8994-496d-9f2a-c8f13102c368.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 0xb7981bcddb27c51d0f1dde8f0daef6e3e2e11e3abd4ba25ae8b175c1a35a74dd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USPR39401405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dc079b33f79a43975e0da536d280062c05c1a25b9a8408d6d080f033012b7e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USPR39401407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf35ee0be833c4dd9f31455f1db657ffc534bed19b3b87842da6f2bbe12e2c80. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USPR39401408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c97da9ae91f53b0436f442be60249d30ec6ad37bc9bb8c5c69052b6706d2d51. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USPR39401409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd909875348a5e92bf9cb508c9700dfd57dd1ed5dd2f95ffb1d9458f75d01cbcc. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USPR39401410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ae003fd23ec23804ec25874c7ade1e61aa483c3af4c216e8c511254c4c87a3. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USPR39401411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49405f55b5b43b1deae8e686aacfe113391650bc276b024ac52e3f07d799aa1. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USIR20200499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e34f9af8578d2a52fe46c270d77d5a861ee6fc254b07b91606f99464510227. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USPR39609357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce0ee65a80ae4cbd33ff0bb8a2efa7b63bbe29cf0af0d121e49f2b384430449. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USPR39609358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9118a276f5b2927747781f5afd6d9666c2fa93e4cd12006ab898e0acf0e3d707. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USPR39609359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf142e235ca16f8805d9bdf5622e8aa089efea0ef6155e3ad3ebea544a88f024. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USPR39609360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa795bfcefc49269b40a2867c751bb2a208860ab80db877f81a24d12bff42ec88. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USPR39609361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6ee480e8ac1db7180d3c4d97e9e98902f31ff7cf75dc4f14cf2c32b7593b39. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USPR39609362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d4360126aeeb3eada9be8db410a1edf09389385393878987e5fe761502692e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USPR39609363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20a2470f056b347bb526c1f24919440232633e3f2b88914b9ad2b0c758c3566. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USPR39609365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00039eb8babddcdc5b12da383661350549e57ba485c8b4f5bc909197d11b3d61. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USIR20300598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51859064397731c2f3b11f46dd8e89b8f8b18e26bab4a68c6174272833bdfe1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USEP40365101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8f2540462f37b6cd422bcd66550db5261ff47e552117859893ac29ce3c6641. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USEP40365102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5b6c326dcf6a322c905decfb1c8c21f408240e87160045bf9b649da853ecfc. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USEP40365105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca25d9cbdc37efb6f8f1e66f488280c4c5ed66fa886ebb5fb2d709d237267def. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USEP40365106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fcf86785e47016fad592946d771b5d598b9858a52489ec8bf5013ceb103330. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USEP40365107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456f79bf6faa99e6444c871640e699af4671d5c0ed46f467d9712acbcad9b0f6. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USEP40365108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d50910fc8c3261941e10f77ac34a69491da26c0d0fea82225d9973ae83c9d4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USEP40365109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf195d495265e82dc76b380f6adf654bba0d29d38cd6a18190964a8abde82796c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USEP40365110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069e3a02c63dca1be9132916876b51f84917c80cad2b3a482edff41e2739f76e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USEP40365111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc074cbf49332706562da16bc244bbcafcf9e447a1021eb609de070f76010364e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USEP40365112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08bfd86c85c28af6a36da08cdd5342c87b22304e9010449b4698d98de02b210. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DED832100479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e8ae3ff976eadc34fe24a47b91989fb42d0e0667be47b531ca36bab4b275f9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DED832100467.
This Is Hardcore (Live At Electric Factory, Philadelphia, PA, 7/27/2014)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2a23e5356f52560d26079dbaedc6eb118b2058b13b4e3c6877176ed0ab600c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DED832100447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32ddfd04535479d3aa4926f853b0d3bdb2b9f992b6a2e23d1d5c0d4cbca8301. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DED832100448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04661d197090ec90c0d89995057c0d1f4422208efce625285e36f87dbfea7c75. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DED832100449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9aadc74f448435322a82ec1ad52498d66c0feb7b87944645ae9b4d69c098dd. 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/DED832100450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4e02089d07f22d6bb0c749885eed5eaafb898b01d2edb62f41047163630626. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DED832100453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0af883c7fae49c88d3166052f1c58a78c552ef447f7462e9cd049d32bd03092. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/DED832100454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc256b84019bd9d846cd6ef3224491377b01c4f6a9c0c6344a0a785af336b269a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DED832100456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daf94a7d4b51ff1348075a086f75ed2ad12c79aa5ac52d82b198ff1361e5526. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJK2587336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a09932b755ed3562f944b7a3d046027b8ee1779328869b67c1dfe2f520ed12f. 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/USPR39609355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343354f7c22d914fbe2084ab13d1e5133241bce51719e401ff618f443342bfd1. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USEP40365113.
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