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 0x8a821841c59cff1101d5a404b0577b636dce79c3d5338e1fbb5eeea318d81212. 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/3382bc49-ad2f-4740-991a-426ac54a91ec.json and https://artists.proofprofile.net/proofs/artist/3382bc49-ad2f-4740-991a-426ac54a91ec.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 0x96ff39e3879332db23e6d53429f3be1844d052471fdc5424f2ec588a8bf4fd43. 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/GBHLW1802632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a6383bd886f95d1c7285c3b2d9b87f673a7a97fb7b19eefb1b766d667785c0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBHLW1802633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313992c8443a4ecea27f164fc9114ccc19d422c09c390c5ae0a8eafc32a57c42. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBHLW1802634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fcdaa12a60a7e8e6f34329f51bfb44a535d3b1f9497e5dcf52505d9ed64fdf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:24:01Z), 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/GBHLW1802635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2451c2e3e5f4269b3f2d7cb46c6187b5a310b4c023449140a4ef359a1ca84e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:56:40Z), 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/GBHLW1802636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e18f392b768b30fc864b570b6a99432e8e808dfa11659935264981e89ea9e4. 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/GBHLW1802637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c2640e24cd7a3055137073ca011579a9ea886316b83a816dfce552d0fafd75. 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/GBHLW1802642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b29e46c68374b7cfc551abfe9737565b0d54867404f04f4f2c31f02dd23bb6f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBHLW1802639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92aa8b8f64b51375c362bd497fb01e0d7bf624eab6e23679fa57188ae704b198. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBHLW1600498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3550084f0eae0894932e525d0580438eaa73b75282ecc3ec9f1c8df3dac1ca27. 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/GBHLW1600499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc539b244763fc87970269224a81bfeadc451104610583a912aa4c4210fe7bc53. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBHLW1600500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf014c8681755039b7d1f17aeef68bbb80a8a3eb541537bf0a4733423f9fe9a1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBHLW1600502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd173f2c0de439dc79537129c5a68ea4db5d9c449889f5bb8cde8c800ec021aa1. 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/GBHLW1600503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0658e1436fd8dda81d857af25a5d30bc25deadb4253daced646cb790073cd418. 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/GBHLW1600504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3fed0f958b7fb34374f2d6fb5919ff62c7fb54a8bedbc50625837f57ca3463. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBHLW1600505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be5a4ddaa496bbced682d63ac2c9c2d0ca7fd34006b46fec8c5c67b75300d30. 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/GBHLW1600506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cd23a17fdceb8f8853ac06bfda82845fab78f5cda726ea942e9b8ff59a05b4. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBHLW1600508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec90a7d5a9924b12f0b24b7f32a0118dce866815c43fc3be6a3ce0d5a60aa3a1. 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/GBHLW2300285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8fcde11509a65970b61546c93ebc394d46384f12314d3fa7710071a50399b9. 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/GBHLW2300286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc526c6b28ff533b40633f8df1fab0cb2d06b87d5c0c269e08e728df0ae37a962. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBHLW2300288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8fcde11509a65970b61546c93ebc394d46384f12314d3fa7710071a50399b9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBHLW2300286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec90a7d5a9924b12f0b24b7f32a0118dce866815c43fc3be6a3ce0d5a60aa3a1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBHLW2300285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b05e15c487e97206dc89e65fbe2236b2cbd7fc9e800b0e881afd38ff4329a1. 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/GBHLW1902573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ae5c65055c68c38b277d5b00009baa340a9f79a97111dec4e093d7a3494934. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBHLW1902574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea20b4972ce7ccdcf3a0fd7ccb63e2addb747027a47102d008ed733ca1f974ac. 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/GBHLW1902576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40ab94cf3c853c2f2f93b3d9e6b2f177269c1224a9dec1ca042ae3bad846b52. 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/GBHLW1902578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313992c8443a4ecea27f164fc9114ccc19d422c09c390c5ae0a8eafc32a57c42. 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/GBHLW1802634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e18f392b768b30fc864b570b6a99432e8e808dfa11659935264981e89ea9e4. 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/GBHLW1802637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77e836ce4d02034bc98e0200a07b0b30129ef417b19ed61e678f9913b01072b. 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/USHM21587805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ebf3106cec2f05c15dcc9a27daffe305c49a3ae83c7a35d75323e98af9a960. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM91437425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6868a757d068ec3c46fce7855ffc6e13f85b7e5a2b51b2e4aa1bace57fc54a8f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM91437426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40b3f7f21d397b9a3aff634f31b3efab720364e6588353725e336b4546be90c. 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/USHM91437429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9e0941b42d182e421c4e8705edda8c50c25db5029e4e10822a0000b1a68b8e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:31:40Z), 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/USHM91437428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef4048659c34155574afa114ee0095a7a97fb90646c58ec065b148fc29c0af9. 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/FRU701400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e08dce9d072d43d2fe85f9ab7115222660ad599b19b90331a4bae3d952af0a. 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/FRU701400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfd160f4365c8d66db54ce5510c8df0bf1788435d63726abcbff4bc76edee29. 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/FRU701400054.