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 0x5f315f7709e6120379aceb19f04770a022cfbaa7ddf53acef3f7e06e0f365c83. 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/6b763113-fbbe-4e55-98cd-3bbf26d75b6f.json and https://artists.proofprofile.net/proofs/artist/6b763113-fbbe-4e55-98cd-3bbf26d75b6f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
You Came Back (feat. KEIJU, IO, Holly Q & Gottz)
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 0x210f54bf6953a77fa7946dff80e73414d1eca6964891e4ac6feaf29d4afcdf93. 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/JPWP02202168.
I Am (feat. IO, DONY JOINT, Gottz, Holly Q & KEIJU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8aecb110f7cb049f3df2e2fd5a18fc970cebd1636d822b94d12c4d1fb56853. 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/JPWP02202169.
Urban Tears (feat. DIAN, Ryohu, Holly Q & IO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f927501c6fa9d36d61e9a96946d8ec858724f46cc302da7ed900deb30450c7. 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/JPWP02202174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b352b23cc06dd96771d012c32cdd4a341373323b2756e5b9afdae97c69ae2cb. 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/JPWP02271455.
Leave The Message (feat. Neetz, MUD, BSC & Holly Q)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a18e7c5f671f9c4f8ec4fc5e87b7a296bdb5a99f3a17cac22236c87c4aeb1e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPWP02202179.
Core (feat. Holly Q, KIKUMARU, Ryohu & DONY JOINT)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea8fdd22f07ac6f6087d6c40989742a3c0084c6f42737ebb024beac49224201. 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/JPWP01971064.
In Need (feat. KEIJU, Holly Q, KIKUMARU & Ryohu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5311a53b83f118674a124bc44b83bab6a1d65405a950e89dadbea7e20a7d1748. 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/JPWP01971068.
So Far (feat. Holly Q, Gottz, MASATO, BSC & DIAN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99ac720ce08b1d71a3824b548e6b499f0cd5897bfdbc926803ad01f0393f7a2. 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/JPWP01971069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39395368be172bf0ac8fcf01d736aa31c2ae64af0559d4e5014a43fb150481b0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPWP01971070.
Bustle (feat. Ryohu, Holly Q, Gottz & Neetz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336880b5602a9761235701c574a7243bed9739050f921e6ba7c799c402ec7c1b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPWP01971071.
Until The End Of Time (feat. DONY JOINT, Holly Q & IO )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162867f8977260613e7bbad3ac5c5f0acb2f7bb94885c529a5f48c5dff22cc73. 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/JPWP01971075.
One More Dance (feat. IO, Gottz & Holly Q)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc573f8ff051d4b4e48c9e35e5e997e97cabedf7e4134fa4a00e127df0703ea51. 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/JPWP02100162.
Faithful (feat. IO, Ryohu, Neetz, Holly Q & DIAN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb540ae927b0f9d38f1232438e464e71ad50d2bb30a68f64ab69a5e968cfdcd. 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/JPWP02100161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc573f8ff051d4b4e48c9e35e5e997e97cabedf7e4134fa4a00e127df0703ea51. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPWP02100162.
Dripsoul (feat. IO, Ryohu, Gottz & Holly Q)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609378485a8ecaddae451cd36e23f98a3dede441879eb07730f7e20a11230e3e. 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/JPWP02100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1995bbd0346607e95486174d72e083b004c3cabfc1ee9f7645c52e31d84739. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPWP02271456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5311a53b83f118674a124bc44b83bab6a1d65405a950e89dadbea7e20a7d1748. 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/JPWP01971068.
In Need (feat. KEIJU, Holly Q, KIKUMARU & Ryohu) - Neetz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd09bcdd7b377e60fdf6f70f2e46ff6dc547da32459d390af95453e60478fda. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPWP01901232.