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 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 0x6e48977595a9d4a25d43bc21e229585e9d29c6f0ad4038ec05822e869d71f273. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2be24f8-7c48-4d6a-996c-cc3c2bf2d941.json and https://artists.proofprofile.net/proofs/artist/f2be24f8-7c48-4d6a-996c-cc3c2bf2d941.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 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 0xd90acb3ee5a3052a58ed70397789b014b4539741560f2168747fa172318a278c. 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/GBKPL1805089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066b575b64f7bfe35db8b52b3fb26f9fcfb6465720a3f5a265713b075e37b5b0. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBKPL1805092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f16a718afeed836766f109ec5310cea521c4a2bd8631feb0fa315c138c9fe6. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/UKR6V2212823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bdf691d996d855208cb7d38ea760b97fdcd7bb4156ab49b75098fba1b640ca. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBKPL1827655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9255b0a7478b9ed5a3bb2b013648e598b2d76075f1b3729d2c52c49ccbc241e9. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBKPL1803747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203e8d0318368fa5c7a66241b6ce6801e4c5820a5be9f96960c80b9526bd8665. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBKPL1803739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce68eab5c94677638095fdc983a5729b6be3a58aede2f0ef20115bc48d4d01b. 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/GBKPL1803745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9a01e046b0b34ceb9c0d7951a8e6cc38d58b18cf69115faa4ab31f8c55a808. 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/GBKQU1925574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b359b6cd0d12d80c2888cb12c7be1fd891f6c7d9cb1e75f63efc190f3cdcf0. 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/GBKQU1925579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0ac08667b91d02cde21498747ab0357dfb09c879bb775ad4525eadb5255a2b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBKQU1925582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9d6806c8474b7f68ff98abc4f3a863f94a1d2bb42cd0f38afe215a02129329. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM42K2333909.
Spiritual Science 2 "Back To The Mothership"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6438508784ce54328ae68e178e4eca84dfd94ac971a5229d416a79cd4c61be88. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QM42K2474763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdda3f70dfab6453ece6d9ef012fe18e561eda6ad18d8d5b17858c62ccc85d2. 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/GBKQU1963835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e3ee1b2512948d598c77dd323ed0ac6e22c5f09a5e0f21d054bc829ce8aeaa. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GBKQU1963836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d9e2ca74f4856c4275fe21c50a429bedd1facd09b2e1a1290e0ad0d0731218. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBKQU1963837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc1826009601b4fc4eaca24dc6038834e6ed72c4ff127ba997b009e8b75b030. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBKQU1963840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2320e317d3b49391dc9bf7fac0571229241eae78d51754a8ee841d9d20f082. 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/GBLV62307566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699e8cd68828f8c28a176bccb20252099451aaa54bad6d4a2d94108be418c982. 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/GBLV62307569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f11c2743a5724639d3c4d7000afff7b4be9eb16232970e50300586533634ba. 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/GBSMU8310075.