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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b510f6099f3ca38a2b8ed18800bf70fb96f3157e3eee3c704a2e8a47beb432. 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/f635a4e0-8868-4a1c-a886-cd9cba3bdbe0.json and https://artists.proofprofile.net/proofs/artist/f635a4e0-8868-4a1c-a886-cd9cba3bdbe0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Champagne King (feat. Blacky Taiki & 崖の上のオニョ)
Champagne King (feat. Blacky Taiki & Onyo on the cliff)
Yahman Hard Bass (feat. Blacky Taiki & Onyo on the Cliff)
Yahman Hard Bass (feat. Blacky Taiki & 崖の上のオニョ)
Yahman Race (feat. Blacky Taiki & 崖の上のオニョ)
Yahman Race (feat. Blacky Taiki & Onyo On The Cliff)
Chorkampagne c (feat. Blacky Taiki & 崖の上のオニョ)
Chorkampagne c (feat. Blacky Taiki & Onyo on the cliff)
No more chon (feat. Cauliflower & Tebamoto)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba1600d1ccae1425b40e18654e339d013b52293f9831c278fbcf4921c1a3af1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPU2388467.
チョンってすんな (feat. カリフラワー & 手羽元)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba1600d1ccae1425b40e18654e339d013b52293f9831c278fbcf4921c1a3af1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCJPU2388467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27dcec411878f27b9cfb1d16e926cc79051672e17c7eaab806e558e7c86eb3c. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCJPV2307427.
Yahman Hard Bass (feat. Kyosei Chan) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b8130478d9473b74c372590f43b8dc6c0b36b52c455d3344ddfd8ca9214334. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPV2373370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdb5caa72877c35a5e4ccacc1f8d0f001739520e1deb9bfc15fbf95d846814b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPV2380922.
Suspect (feat. Blacky Taiki & Onyo on the cliff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdb5caa72877c35a5e4ccacc1f8d0f001739520e1deb9bfc15fbf95d846814b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCJPV2380922.
So Erection (feat. OHAYO, Blacky Taiki & Onyo on the cliff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ff3d283b7ba706c7000b047c8ee80dc79232b88ed99c67e22717e7bacaa563. 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/TCJPW2360952.
超BINBIN (feat. OHAYO, Blacky Taiki & 崖の上のオニョ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ff3d283b7ba706c7000b047c8ee80dc79232b88ed99c67e22717e7bacaa563. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPW2360952.
Venereal disease (feat. Onyo on the cliff & cauliflower)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b595f205516ec47cccf33bcf1216944d14e0dc6c52e9e17c2a4b15ec4ee205c. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCJPX2337143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353eaeb29944ad3bac491bf4ae3a3b03867dbb6f38c9d568e74a232dc83b8b4f. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/TCJPZ2454858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353eaeb29944ad3bac491bf4ae3a3b03867dbb6f38c9d568e74a232dc83b8b4f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCJPZ2454858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff15c02fa630f04834e26c1ae0ad09d5bfe7e77632583c0ed8919b92ca79659d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPA2420909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff15c02fa630f04834e26c1ae0ad09d5bfe7e77632583c0ed8919b92ca79659d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPA2420909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4778db76a1797c8e4d1201933d06c02c03707f7f319d8f44a944498c5fbd7fb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPB2407342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d01295e2aa43aea31e37e04ab9970166160d60d16194a25ef9f75253440be7c. 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/TCJPG2530250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d01295e2aa43aea31e37e04ab9970166160d60d16194a25ef9f75253440be7c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPG2530250.
Yahman Hard Bass (feat. Blacky Taiki & 崖の上のオニョ) [SPED UP!!]
Yahman Hard Bass (feat. Blacky Taiki & Onyo on the cliff) [SPED UP!!]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e705cfa04d090a582fa05673dd77a9cb652f4afbee7693e554a46f4ad136acd. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCJPI2566833.