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 0xec89c9b46c2e1196a59fb07ac4fc4a1fa396771de535cb1f3e035bc34464edf7. 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/c34f8546-b7a3-424f-9a09-f39674382898.json and https://artists.proofprofile.net/proofs/artist/c34f8546-b7a3-424f-9a09-f39674382898.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 0xe6375a809c3133892a0280d29cd5dd11e3f227c43c31f05f7e053758de6721ca. 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/USCGJ1373305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08d7ed70ee45bf6a3bf1ba5a78cd0ba6db3be0b5ac42677a21bf030ab82d905. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:03:01Z), 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/USCGJ1373309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542b3cd246bb5fcda2af9dd240ff24da6049a93663b59a133ae72175161f8e21. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:50:58Z), 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/USCGJ1373310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891df9d1ce94c69cdc7a5d8d95ab7207952a1b6a8be8accc860d16985f3fe2ef. 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/QM4KW1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28564fc82e7f8148eb5e69aae0266ebce8359e696aaf5060f6ec7ccd0ae964cf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM4KW1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde6269742fd7179b3893ec7fd5c5bf5491983b76cf33e7c55a39e9e6eef2d06. 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/QM4KW1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136f5498d0b66564e7f7f066bcb04b7880281b5b9bac21d38dbfa5e8c4830373. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM4KW1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c49514b66a9b48fd81594a1e149bfff034ef72ad4328b964a8f5fa3bf19173. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QM4KW1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d3a066ffe9ad48944ae5387811c8d40484bf75a33867be18a394ec121a6e27. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4KW1500009.
Power Line Lullaby (Light's Not Shining)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a64d7a56e794f808f6e44f5bb58d0d6500ec177ef1cd9f592859e1e50a1c1d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4KW1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167fa85841ffcae0c6c52f47c03a44c9d6bf452aea9c56ca93527fc254ed1355. 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/GBLFP1586613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2425f5a5f3578ea0cffbe2f77625d48d270fcf46cf16ae4e5e883ec969a30d. 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/TCAEI1915064.
I Got My Eyes on You (OurVinyl Sessions)
Smooth Hound Smith | OurVinyl Session Two
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70956fd865ee6eed2a5708e5d2da5d21d2668f403896d7bb5ba57c047d6e3dfb. 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/QZHZ31967195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf107a5ac1d2f8b8d50e60cf88bc12c1f0bf25bc456a6b9cd5e49d25aff7fe677. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:59:35Z), 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/QZHZ41970577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd579183c0a8ce722dc467f5259cfe5ff9ed3f7e9b680f4b821b43870895aa1f. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAFS2131899.