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 0x08f572f60ec9c1b595675e571fbf4897798d36f3d8fd851c0da811713359ed0e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9eb5a18d-3cb7-4eb7-9163-c1f96d08b070.json and https://artists.proofprofile.net/proofs/artist/9eb5a18d-3cb7-4eb7-9163-c1f96d08b070.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 0x4d6708137e074480f5684cd39600b18a687666de6e8df50e78bb120b7c4ade84. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:04:12Z), 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/GBKQU1952610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1962274dd8c92e82e25eda475667ea7e3305b835d3e71e26fc3db8aa19f5ffa7. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/GBKQU1952614.
Real Freaks - The Hoodlums All Freaked Out Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dbf3ddb6b60de2e19214d9cf0d35cf68e9959a4b05522211550810a5b32f47. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBKQU1939315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76859a1c85c94a7aedf329f3b3683e2ea04a0a44ea1c6093504e303531ab0906. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBKQU1930956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f908ef5e8039f6729a0c97f79841fcd57408fd041c4523c2cb43b4214598fb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBKQU1339951.
Hard House Music Library Mix: October 08
I Need U - Anne Savage & Tom Berry Remix - Mix Cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda02b91f346a1888e5ce323be8f36e39ee065439f93019e56c99404c5fe0d67c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBKQU2007533.
Real Freaks - Anne Savage & Tom Berry Remix - Mix Cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe6da2c7d5391df0d6a0a5298909b0efbac9d8ff1f97c2655c79b3d2e1d9a1d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBKQU2007534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd098d2ecfab004482e00af5cc6b08e431cbbb6cdbd37b385010859e9b2d0780e. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBKQU2007535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac27405d6fe6ca99a6d06bf5a1709f25a62fdf91acad94d007dc1a3f2e13390. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBKQU2007536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0750035780f585d6c9a0e0636d5ce22134154dd4adfef630926b2161ccaa540. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:39:29Z), 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/GBKQU2007537.
Dreamer - Anne Savage & Tom Berry Remix - Mix Cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007f19e9b8f09e830ce20b9aa1e2ced1cd2a25595a8370d3d7074792921bbb0c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBKQU2007538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c96b2c4ce5f285081e44714be8dda796c44968cdc4cbcdf06dde831e8da84de. 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/GBKQU2007540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf918b106cb3a5fe439ec84d37764b1bccde20471cf7e8ee31237849430c2af9d. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GBKQU2007541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089184d1b0db3889d3efc3cc00c13dc2a3343debec1cf637b03abb4d6a13194e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:22Z), 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/GBKQU2232586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28131425140c4c7e9aa2de1930230d2c94dbaecbb3631ac80464761bfe0baaef. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GBKQU2447530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33772d4563a59a105102240f94d72fa446868c9f84d730b21356b024b4d6031. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBLV62411455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e72f99a008b743e0a369f395293351eecae8ca0f7b2b4ae4ae0c68d231b4d0e. 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/GBKQU2507865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfda7a4f61499d84364df39bfa469bc4dcea8fca8c43714660286727e15b249. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKQU2513964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5841baa694cd9d4e57df02fb7200875d6bc2d71352bca7a79d2ee6347b1b7762. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBKQU2513982.