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 0xa1d36b67d33ce040541e33e3023ea0a2cea110b8bee8295dd7def27a2af0eba7. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dbee3d15-4dcb-4ce1-a484-b546791642d6.json and https://artists.proofprofile.net/proofs/artist/dbee3d15-4dcb-4ce1-a484-b546791642d6.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 0xb1d4df237f074a66cdbc7fa8a105daa9c4641bbbc758291ac3f6dcdf052295cb. 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/ARCH21900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db7278f5ae5c9bafbf1fdeb6ad8a9bd5a1ff60aacebbcb01fd136f606e62ba8. 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/ARCH21900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5352265d0c67d3b95a5930721f3e5ca93c2802c06d8ef869d7dbf58cf576c14f. 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/ARCH21900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ea012e93c78ab96a971f27b51fe326b05715dff932ff4c56c8ce495977ed45. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/ARCH21900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc42e4b1114237f3dcef01320c4c592f3122e7378b75cc0e56f56970042e6676. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ARCH21900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8b298d4fef0c3f1841da509105935bd2395d4d6dc7bdf3eb83bf9800ee1b56. 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/AR4HD2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad986502a21f80b821dd3a0d616434b44adfec707dadf1aff0ff862ac06193d. 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/AR4HD2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf0e6c1912620d42d3456158f82cdbeba6a2af2d4060d366662d65ae52ee32e. 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/AR4HD2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f10ace33cdeabd97f2421cde2b9c36944b6d67d85553586bc9672474f757a5d. 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/AR4HD2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d4fd4b56d58015eae5444e872e7cca0cb8c3e3592fd961e61b0246fe3bf2a3. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/AR4HD2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71ba09b2ce2f4c40816d345ee312d2812ac7dde0043289c0b2a2d85ece4a726. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARCH22400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a73bc80e5b25ef121f64a1d61d935f5f57ba12ef6cb70589d4f5ef456b4750. 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/ARCH22400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd937e73529aaa6c205cfb2f72657516b49e71e30bad37fb47c10cd3ff1866d1e. 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/ARCH22400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59227e34a1cd3cd71f1d8104c406b3eb6ffef35080fce8974e5a0fa2c7d3444. 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/ARCH22400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579fff2aa8d6b03d9fb351fc6270b7e2c494aafd92e7a1aba9b0aefdf92724cb. 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/ARCH22400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac579c41aa1669306d7a7c29225e4ed823ee3c89be96f0e81255e65511941c5. 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/ARCH22400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827a9db9f39865302df19e2a32de78b6931a39b9e4b836d7679eb09d4b237bf7. 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/ARCH22400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1add1759ac7bb238b8cb62a2dae32c60b76bafaf9d76c40120049f9099e35f9a. 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/ARCH22400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd092153128019666848d4c5138f0334466cbae2bb4303496dcc02e0cb15c8dbb. 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/ARCH22400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a86fd9bd77a5ba2b64a5bc78fe8b3f730a0acb212800db96a925e244c3c7a4. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ARCH22400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c1171afbcb6b98cf31c6bab47a943b417f0e11b201d72ea873392614694de5. 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/GX53U2323804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e880fd37e55212d01311fa9722c228870b50d73c640a8bf7907e2387e32535. 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/GX53U2323806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7a73afadc57c1adc0dc4811449503898b81a8a9da9fe7874740ebdd046db63. 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/GBMA22351527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaee7e44bd71aa546f3df6ae4e420b9d06f1116a02eac6db7f57977a6a02796. 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/GX53U2323805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7808262aa4ced8fa42319aaa422ad46734d67c0877dd051cb9c1296d454509. 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/QZNJV2460618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88098c2f4146119cefebda61c64080bdd721b94757b8e2c4a25c936917d3af3c. 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/QZNJV2460620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f76197eb22a00f35395f06f5411efe057abcceea31f46b8a60f1673935e1f99. 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/QZNJV2460622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a49434302d585581880f66be518b9e67cd6de43de037215f34fb8b6f450c606. 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/QZNJV2460623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef3de51d305aa3a11f7117c41f125a47abf91495a65ffdbe7509ae41e3b6161. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZW9K2348327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b17413e90357221f2e5b7c34a2fb0ec2e846cf57f7c8017cd7378291c0006f. 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/QM6MZ2219830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4cf2133134095aba1117f3dae67bbaf642ddd010c0b60db78fb37cfffc7649. 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/ARA902200072.