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 0x4b82395fdad9d3af81dd4e4badcd1f96f400fda3e853ef1805fc3b42a8c378f8. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9345107-7956-4d0a-a00c-d841a0fead6b.json and https://artists.proofprofile.net/proofs/artist/e9345107-7956-4d0a-a00c-d841a0fead6b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stay with Me - Made Popular by Sam Smith (Instrumental Version)
Clarity - Made Popular by Zedd and Foxes (Instrumental Version)
Radioactive - Made Popular by Imagine Dragons (Instrumental Version)
Burn - Made Popular by Ellie Goulding (Instrumental Version)
Lay Me Down - Made Popular by Sam Smith (Instrumental Version)
Rather Be - Made Popular by Clean Bandit, Jess Glynne (Instrumental Version)
Almost Is Never Enough - Made Popular by Ariana Grande
Titanium - Made Popular by David Guetta, Sia (Instrumental Version)
Grenade - Made Popular by Bruno Mars (Instrumental Version)
Mirrors - Made Popular by Justin Timberlake (Instrumental Version)
Feeling Good - Made Popular by Nina Simone (Sax Instrumental Version)
I'm Not the Only One - Made Popular by Sam Smith (Sax Instrumental Version)
Thinking out Loud - Made Popular by Ed Sheeran (Sax Instrumental Version)
Fine China - Made Popular by Chris Brown (Sax Instrumental Version)
Let It Go - From Frozen, Made Popular by Idina Menzel (Sax Instrumental Version)
Unaware - Made Popular by Allen Stone (Sax Instrumental Version)
Wrecking Ball - Made Popular by Miley Cyrus (Sax Instrumental Version)
Love Me Harder - Made Popular By Ariana Grande (Sax Instrumental Version)
Paralyzed Reloaded (Sax Instrumental Version)
Love Me Like You Do - Made Popular By Ellie Goulding (Sax Instrumental Version)
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 0x24a56d517d0e2552fec0381b292d4537d9d79ce63a37284dfab09e1c849b04b6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZCE61834710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc018fbfbb6f4d8f29b0678c8ad4c83f731a20aa27d4b6b456a8759c6189c22bf. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZCE61834719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cefd20f7eeac115ad643671e3b9c7e6abf1db1bb203cbaedcdee6d735337064. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZCE61834721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9c79dd7c47f5b8b898cc4b6245b07f1481486267236b76bc040b17cf9301d7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZCE61834722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122da5da5a807708219f67579646a086fdd444c455791ac0bec12895118ac16b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZCE61834723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a3d7eab0cab04a69d93fce41da7de15fb851a717fa1cd27b922ced15077a22. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZCE61835023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22267d89738bfb16a4539ec09bfdca4e4fd81c38e44f8c1fd0f7adeb67a5a0b0. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:02:16Z), 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/QZCE61835028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a378d5dd15009f10cdc4ac56287d655f064313cf3c15e9c2a8513bd9b57980. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZCE61835036.