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 0x5f453319172cbb0543d9f047958ca45767f14fe87726f835e86e537dc85ee62d. 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/eeffecb2-648e-47c8-b06d-72f1c2bf3600.json and https://artists.proofprofile.net/proofs/artist/eeffecb2-648e-47c8-b06d-72f1c2bf3600.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fuko Chu No Saiwai (feat. kZm, PETZ, JNKMN, Awich, MonyHorse & U-Lee)
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 0x0a91b2ac34cc85bd63b82569a73467e00e35bc139f3320c476d520ebd872b3df. 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/TCJPA2439573.
不幸中の幸い (feat. kZm, PETZ, JNKMN, Awich, MonyHorse & U-Lee)
バグり (feat. kZm, Awich, PETZ, MonyHorse & JNKMN)
Baguri (feat. kZm, Awich, PETZ, MonyHorse & JNKMN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b407d1968ea7e4366ac5cfa8d865af6fb124a7c78dc359d760a65a7b6fb89c4. 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/TCJPE2541818.
Asobo (feat. Awich, MonyHorse, PETZ, JNKMN & kZm)
Baguri (feat. kZm, PETZ, JNKMN, Awich & MonyHorse)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d56b16d01b7612fe27b4b26d8e2217df6b208758c45d478a482ab242e6ce0b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCJPI2585650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a41442092b259f2ef7bc3957857cd5f914bac1b5d2ad51be217d16694a9624e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/TCJPI2585665.
Carservice (feat. kZm, JNKMN, MonyHorse, PETZ & Awich)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30619d990c9fd3972773a8d6c398a286f28dd8a60b8bea52a0f2e76eafb5e0e6. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:20:34Z), 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/TCJPI2585680.
Rafuna Houga Suki (feat. MonyHorse, JNKMN & kZm)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b675d9d40f0eb382281c1f857fdd347f195c0b69a3632e99c0ed7f42db89d5. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCJPI2585768.
Back to Basics Freestyle (feat. MonyHorse, kZm & PETZ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ab6b691f88d99eb6bb16dbb6c90add7dc362e5d62768cbbbd991c1f6aee80b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPI2585827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f8d9b125c3d71ef07eebc51eaae5067b6d7cd75a00b7bedf08a02cf7ffe2aa. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCJPI2585838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cd1b2318d5c37bb2e2959666d918a11e8c021b80ce5b5183dd0a83f9bd3f8b. 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/TCJPI2585950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f879c561e6a9b9c2a954c4a9920ecd1ec0ed3c45ebc61180424db34657e3051. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCJPI2585960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad0503dc047fb579839fd3a2db74bfc9dc49633fd081b5d85ad81bec6448179. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCJPH2539708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eab101e4fdd8f12ba1697591e537c96ef1181591b6449644e00dfe76fa937ac. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCJPI2585967.