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 0xa0e938b298608aa509193e4c14bc1b6d123e3463e992a627b10d5276c51d4ec6. 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/44573b77-42a1-4285-ab77-f30a3d1e56f4.json and https://artists.proofprofile.net/proofs/artist/44573b77-42a1-4285-ab77-f30a3d1e56f4.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 0x68e1607abd317ec1707072538a765d5905b1d726696dd253ccd80e1dc1214b8d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPV501600396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fbe06e8e36e741987b2403f3fade2569fc9deaa921f68efcce6b4424405bf4. 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/JPV501600397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5d98a9e599b293879342253192a1daddca692d77d64e66ba845a5a326e0c9b. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:15:48Z), 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/JPV501800351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b421e855cd0135b3b06251b9795d8d604d4a37bf7f44b8ffc4b112563d45b8. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/JPV501800447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118988184948402fd8403df9e085a7e6ef59f9f8999d58048072e8fde8e3fe4d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCJPT2279996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418ac998bb6d6394eb12488669ce4e8c3994b0cb563143c452c6eb4833695a23. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:04Z), 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/TCJPT2280003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f52bbf941949725ab52bead6e10e80ac8a2e5508c466a3961f24e1739b25ae2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCJPT2280035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4b8a2793e43ee556f4d9b784b9be2e2db966de2931022e2040c57703cf769c. 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/TCJPT2280065.
All is well that ends well (feat. YonYon & PEAVIS)
The struggles (feat. Chelsea REJECT & LIFEOFTHOM)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4138b94503a4f68b9348f43f2d9818da27c207b92079360b05651d6704e33f01. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPX2325222.
Naturally (feat. Chelsea REJECT & T'nah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82dbf44e8727dd7f75fa4092c025299eb20ea0e37f8efee571236dfb2994397. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCJPE2537104.
TACHI (feat. Maeshima Kantarou & KENTINMIN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2023f85086a84d990ea7a03c5dc8dbda54f588c5164b625f13a180e49299964b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QT66K2523807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68331221fac26c91bef9c0c1e874a195182b0f51f110a0e27f8b9c4d1d59696. 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/JP92N2422491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47da9f4eb414e3e5fdba5e0d957146d24e2c4863ef945b44a1c7e884b5d577fb. 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/BEJC42000001.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c3171b6867a913fbe870261b57f65417b6fba4e59a7dfa5741c43185d2d1c3. 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/JPWP01971066.
In Need (feat. KEIJU, Holly Q, KIKUMARU & Ryohu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5311a53b83f118674a124bc44b83bab6a1d65405a950e89dadbea7e20a7d1748. 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/JPWP01971068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5311a53b83f118674a124bc44b83bab6a1d65405a950e89dadbea7e20a7d1748. 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/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.
Regency (feat. MASATO, RYOHU & KIKUMARU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ced76107390789ad0996087edf5c62b3c8ebe99a69c35216dddb564cd060924. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/TCJPI1953565.
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
Kapital (feat. BSC, KIKUMARU, DONY JOINT, DIAN & RYOHU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1bc9f9816176f6957fbbd954c3a175c289993a8a228d75c56bf596bc6d2291. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/TCJPI1953567.