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 0xaf0152545f6ec3f849c30e58f948c23d00b16063ea36f6f5ea170f43186a36b6. Chain 2 (Bitcoin): anchored in block 953710 (2026-06-14T23:32:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e5cc67d-3c99-4725-aa25-09fb8b66852c.json and https://artists.proofprofile.net/proofs/artist/7e5cc67d-3c99-4725-aa25-09fb8b66852c.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 0x7b9123b0cb85eb59db1730e15a74acba2b04ff4dfe2e1cc8e8dfbf77240c0b7b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBWUL2259616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440f2e749b2712d84e27a8d21b5427ea9862153691909ddf0496bcef697f914c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZBADF2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da4d18533055baefd44fb16fcbda84032980cbe954bef99bdc77b3586e3fd48. 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/QZWDD2363909.
Kwenze Bah (Intro) (feat. Drama Drizzy & MusiholiQ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1e7d79b21db42774784d249140959e074eebc9d6ca4a039d26d6778ccfaa0f. 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/USUYG1515916.
Imamazi (feat. Bizizi No Kaygee & Deejay Zebra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050bea92f8bb990aaeb5f7a03d16b4c53448a9cde49ab2ed4f8a13158e4a95d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USUYG1515917.
Muntu Wami (feat. Dladla Mshunqisi, DJ Tira & The Elevatorz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45203b8eb0a12746b9ecc243811ae50d25d47899f00392782fb3e3756733dc55. 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/USUYG1515918.
Ukudla KweziGebengu (feat. Niseni & The Elevatorz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375009312b0d46092cac29c1d45c55e556adcf6838e2cfacc0de5f9f66bf3820. 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/USUYG1515920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84db4bab218bbe9c9068dd3563a57cf41af621e45ec692701dcb59aac5f1960. 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/ZA7M42200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e2ae073eb62c2cdd8c8d9c05a02433ed2d6b7a1ac92a80abf2660890bf3753. 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/ZA82Y2100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452fed3f3104f8499d88050a51d7a6f0180e7949fdeb27f86ed28416be36cc25. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA82Y2100280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e2ae073eb62c2cdd8c8d9c05a02433ed2d6b7a1ac92a80abf2660890bf3753. 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/ZA82Y2100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544d6f62450df3b3e05a96713ebd692e465111aed6de6c996978e4db61fb2fa9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZAI232200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1525fa8c322c28b72479b4f717b53d1fe5e885d3a3906223cdb8f3ae57ddbbe. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZA0G12300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857c7d97de0aed6e7a13677da24fc52c3d682548da32993127bbf5a375d6aacb. 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/UKXN22235085.