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 0x19edbc5917013fca9fce728b49e3cdbb9dc9e5b69addebd4b7717972f2d7995a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4fee8728-7d40-4816-b130-5dc23f40da03.json and https://artists.proofprofile.net/proofs/artist/4fee8728-7d40-4816-b130-5dc23f40da03.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Terror Night, Vol. 1: Industrial Madness
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 0xa3617fafdeb505f3eb008be2d02d625b107d30624d3a4f2430e360e9d87a198f. 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/RUC001500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2b6747069e96e0b8607462f7d762007a92de7f1ae6d20431eec904eebaeda2. 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/QZHNC2183215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d014a858753e10488e1fcab933b6ee3826ee003715ebaebdf8a35ed426033b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHNC2183217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24c33b634f10ac595b728efb736bc636be076041fc54b251421e13a9787ee17. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZHNC2183213.
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 0x1770af5eac088726ca7d98484da7fa15c854b8d33f138bfd0a87909165971e04. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/QZHNC2183214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d65f11f9208b44dcfbdb9a1eee2542e89585022afcf9883bee72917e6a8366b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZHNC2183216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d2b329608200b04de9f5089099ffb19a67b623becb6ffe2932bd672629dacd. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZHNC2183218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2048473fa17aca7547c64d32b46bc84e0af6a5b22822c1b63dc6642403059f56. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZHNC2183219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134fdfb1dd757caa0947755ea6df8f7e89689babfbbc892b59172d6718bc0526. 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/QZHNC2183220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f96d7b13d27d4fc862330970e20c40bb9b86cd8d8d4daf87810864b646bfb9. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/QZHNC2183221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f57017d28532861865f23df20665d7715c3548607489fa5acfd93abd824593. 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/QZDA81809419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca91c921c6b08896cc7487baea15175accc2955e3a4550d1174598ab9db69fa. 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/QZDA81809422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4d0b75a1ab86d838fb50eb46632535d3f700b1606572e825c1277521c175a9. 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/QZDA81809424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9827649ae14277591c88ae1af69e3e5df94a09614658a7c5c61e1b713b9929fd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA81809427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe13857151643d0bf9a85a6c39f57e598aaab10bd98c411b20822cc4fc264c37. 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/QZDA81809429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd85b28edb2bd220a503a3a48c93979841f8042fdbe311388a7563415eecbe18. 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/QZDA81809432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb269c521c5a5bced7d6e32e526d9dcf8b183c6fc21eee827944d0356d027428. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZDA81809420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff7c3347a658f28f5b9af62ec33fc56f5273f9a8d2d02b3897bdc8b7e8f5f3f. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZDA81809421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf209852005da710b2e267b5bcdf7170a63ff3eab66d9e7c29d5d939f354fdc46. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZDA81809423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab547cc117bb9b7058d209963274a2a39591f147cb4214bf41564a7d59a4b34. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZDA81809425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e38ee7e6a5c8adfc09d65ac5e1d42c5429ac87be06c03a3bbdee46fac09901. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZDA81809426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204d115db2d594c4b9079fd9f2e1415ac578be02b57435fde6dc75ae088c6d74. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/QZDA81809428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057007f763f42aebe28dcc3c50aac1079c39605bdbbd617dc19a0dc0962b5946. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZDA81809430.