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 0xc7c15f957d729f51d3b2b5125c719df72f7af37241da68c1da413bc73690549a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/522ebe67-f523-44d9-8774-f7d15d20b1a3.json and https://artists.proofprofile.net/proofs/artist/522ebe67-f523-44d9-8774-f7d15d20b1a3.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 0x8ea615ab692441655e0f4e5993b700875aa8ad488a743bbde64867a7758943f2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJB2456832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a130f10cf26227defb0f0e40c97d1f350e4c2fb7ddecc1d0b9badf20d49abe. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:09:41Z), 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/TCAJA2456875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a40e3900d9eeb6e313d14c076d06c6a3a7d60d3c744e45b74381fda756ef7c8. 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/TCAJB2485753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d64f48d5f917ef8ff1d52556dc27eccf0b628324c7a955cba81b7030820b97. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJB2485760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b66806c518d3c8945323ad889b407098248a5d353cfb92cf941fb641c3c1f3c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJB2485766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ac7c521c0e5c0bc56fae2365bded536a72ea768d4c833755b85b0e4cfcc500. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJB2485777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c2bcd5cd56dff29d122b1e5d1e76ead1ef0503ccfad1a7081a47dff0726892. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:12:28Z), 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/TCAJD2423903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c0c27e43d9066eb9a3cc95c06585517425ff40de138559aa37c3dbaae6e8b0. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJC2423913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c70c92ab6491cdd269fcac9d4d4351d1f1dc5b46e39534b84a5accf9966f97. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:16:25Z), 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/TCAJC2423921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39191a7db064b71d8ecfcf6d7309397529217e7a0ac5c37f0c3fc255ec25a901. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAJC2441600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa155f1df723bca7b6cdb1fa053e88132be6be04365fac21c5017c22b79f3ac73. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJC2441609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a132eb29fffd485d9aa514df4786aec7c6c2a2c9cf6df53046e2a5c4fd02e45. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJD2441662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc455ccd7e294f648740f336bd454eec40ddf175db69f887d33b2ec1e76b877. 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/TCAJC2441675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba1fa632a8e0010bd4740c23178606f723c70dd7c043b1d75e35e9a30aa41ec. 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/TCAJC2441709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371732d916b941982629c7e4cc6ddc1839263a12d02a853427dd6e6ff0b91a1a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:09:59Z), 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/TCAJD2441758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385299c28bf97bcf9c68faa9a86c5f64a7ba0b3cb0a49111b2f7802b9d06a02a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAJC2441770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9871452aedd539647b9fd034002d62635f1712702626fa8f042f2ae5b21bb7. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJC2440692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f14fd52bb3f1c4d3ff49f7bf3fc82787d23da8152c0adee9e42bc9b680d891c. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAJC2440725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ad47eb9a3f990ef881432a8063ccd8650715eaee360739a2bbed1badf596b7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAJC2440741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3c9be481465a69395c5d3b4f366553710c7546f1babf619915f9a76c5cf088. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJC2440742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c288225f406ebbc92c4e3ad6810fb0f57b6272414ff4540ff72995c35098481. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJC2440757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c31f90f75b1e5a1e8dff18aef9e3efc53702b9e7db40b0eb1c6f7cd6bf05c4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:17:31Z), 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/TCAJC2450861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d761448987d7a465ba11ea3550c8ebfa4b930b68bf8ffb31b73d3443273ae95. 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/TCAJC2450900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5136b5f90ca55f3eb20aac4a84440ac64ecc78c560f0ea9461c867d90b77989f. 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/TCAJC2451779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb124137a11b4dba5d63d3e3ccebf5aa1c01b0a85052a14bc9eb75981a2666a51. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:06:00Z), 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/TCAJC2451803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5061ef2edd4643feef1a8d10f55e2de409cbd9fa166ab96743ecba2a86a654. 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/TCAJC2451825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed14ece3747d11cbef09b449399df3764b7a75872bfc7e4453b1f267f94c9c22. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJD2451852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582f082fe6ed6aa88e248e9d11387ee1f4ffdfebbc15344bfdcd22f473b0ea90. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:14:13Z), 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/TCAJC2460573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631dc03008cbc57cff99dff801c1df7d33ac97baa8f0bb2fc4be2da0ad5cf13c. 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/TCAJC2460616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322bf434379302ac87fb12456100eba2d6a8ecb852b9d449f41b17a43bbde825. 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/TCAJC2460634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c91853feb567b93773e587dc1c5bb98c96e2418baeb4fe87bfa35b635cebcc. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:27:43Z), 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/TCAJC2479754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb4dc69202ad2d08d6bfd40e2e421c9ced9a4f3a8f9e27f46882d3edf975ba3. 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/TCAJC2479773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6885783601a327accc6aaac857a2480d30c83b003b05b306e32714d3cdf5f8a. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAJC2479783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d9dee87d674b1edb453b97d7a5fccd2013487f1a1c71184840ed120d863280. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:03:32Z), 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/TCAJD2478548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4828d8491b57440cd5ca79e79012f787ffb045f3da8dcd49c6fa797eecbe22cb. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJC2478556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213dc4ab152b91a6640734ac5ff2d96284612ffdf51c6e5153d5cdf534f8b2b0. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJC2478581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b7443b716eaf8517438c0acce84966b4139667c00f8cdf1633027675c4a785. 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/TCAJC2488012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c7fa64bc0ec6d851744b5307862abddb71e8ddf16b6bbef0ab381262279a97. 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/TCAJC2488058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa80fabc6ca3a59dc13f898826fbff1f133ece4c32aef5b7e6587b4f84551d6e. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJC2488090.