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 0x6f2cb4862d74e91df0806f3495d0bcf18d989145d0162d33113f7f1d14bf5b0c. 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/96d998f5-e9fb-4a60-af98-7f91184d68fb.json and https://artists.proofprofile.net/proofs/artist/96d998f5-e9fb-4a60-af98-7f91184d68fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vulani (feat. Mangoli, Sighful & NHLANHLA THE GUITARIST)
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 0x27bfe7cfe95f2aca4fb4740d18f9875d37303860f20c63ac4a58b4966e2f6893. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US38Y2413170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebf17a7e179457f0eab90f1fad8b12b0662e2a4dc70cf1503958fd9796e94dc. 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/US38Y2413175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8143fe4c35941dcd1f99815c144e04c3b62af96a3eb7fa438e8c71715a891d. 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/US38Y2413176.
Ntofoza (feat. Lungile Womhlaba, Thori & Phemelo Saxer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb1735bbc223965d52c85de613897769b7978c1e7980a8b040ab5840b165813. 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/US38Y2413177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bfe7cfe95f2aca4fb4740d18f9875d37303860f20c63ac4a58b4966e2f6893. 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/US38Y2413170.
Thixo (feat. Sighful & NHLANHLA THE GUITARIST)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fd6476fb77c07fed0fa97719f13f525306d76fd9947c5481f9656932e178c9. 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/US38Y2413178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5bbb3c7352d9799a664ed99526aa38d7aa41d3124fd66cdba4eaac874294e3. 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/US38Y2413179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bce171bcaad6e0cacf751a03c0864fae8cb4b7ddc808c89aec16d16e57dfae4. 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/US38Y2413180.
Ravaya (feat. Slenda Vocals & Tee Tee Sa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603ec7f19da660dad273c9df2067d732ba03336456ec23677b11286dc922617e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US38Y2413181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600357bd43aeccb69ceced2f88f8e67dca2f645b11d17bb15a00909b6680c27b. 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/US38Y2413183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c8770331b230fccd4044b8afd6f69182a9fa22852c4c91c2b7745c57c1f12d. 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/US38Y2413185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b227022056b2a2801bfa5e9f9677ccbdf9012d4d4e46e8c4e03bf1ff1d4780. 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/QZTAY2239427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaa65cd716c402ab5014b56bee49c8b7b8b51773e9200da37c1bd1ffb381882. 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/QZTAY2239431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa022b369a1f1f794fa8698b784c91313a56a5c5dfcfd9505493ba9ed8df52ef8. 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/QZTAY2239432.