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 0xbdd37b135940f1e9904edb69c1f3ff3463fb5116c31c63aa127558ffaf41e88d. 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/5e81fa88-ad30-46e8-a90d-145b6c1df4f1.json and https://artists.proofprofile.net/proofs/artist/5e81fa88-ad30-46e8-a90d-145b6c1df4f1.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 0x62f85ba04c0bfa9919061d6db5da0619b1be367d60ee82c4d1547fa874730c5d. 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/USUYG1108256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a73eccce4846650ad5862692da81e15b2e6a65250d05d02604f0eb993f40493. 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/USUYG1108257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdd086f2c93d7cddb102a7fb03471f3bf7fcd00d0efbb7dceaea7f11fc58e7e. 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/USUYG1108258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c522f665885927ea752f5e9b04f371a2eb989992a7bbea799857c3ff0742ee3. 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/USUYG1108259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8e06c1b23cf87dab117a223ef131f27239948f9c5d74df7798815d28e71745. 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/USUYG1108260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ba1d3a96170c19d948da693e3ccae6b1c954acd1319947653fa61b1272b0a1. 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/USUYG1108261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6721550644936681ae01f372578d39da4379057ca14cc6b5abe6b6d0383ba22b. 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/USUYG1108262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257171c9a24e8a34d0b304f3126f9afaa6d152d831f6da44e31c9f45d77cac16. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM24S2308301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c96ff705b8a5020bca6107189aa0b202590b35ca793d68d01b1b288292612c5. 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/CA5KR2309852.
Cubix the Polygon, Vol. 3 - Regeneration
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5e3394857c8f74548010dd60f3cf3c78b10bb264fd0e55278f32c903ce591e. 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/USLZJ1675030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb789e5be0a6a2e5f63f79ce51989ff8f291330d4f15a9342d01184a496fa91b. 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/QZDA61809932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1a95ee2e1282f4cbe9026869f8da3e047206ba11c870753ee7d674d9c0043a. 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/USLZJ1509381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52fdeaaf5b7f8b509bbe8bae5b40b1dca5155dbdc4eacc0b49c2022b7a69a1f. 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/QMDA72159402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6b96da2e25b30b6585ed00c010222d0e72a5b8ed10ebbc5fcd3674680cd105. 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/USUG12402622.
One Thing (feat. Cristina Soto) - Bassnectar Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe010658abf8f3aab4a951379bebebf5876a3f544c717a78c8209365692982021. 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/QMLD61404051.