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 0x534d50f459b4e551a70bc8b4316d684cb1379a303b4579b5509924b4a0becca6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5715dcfb-4b35-4b58-b3a3-d1925cf192ab.json and https://artists.proofprofile.net/proofs/artist/5715dcfb-4b35-4b58-b3a3-d1925cf192ab.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 0x7735b0011b943a6875242d2e07a22146d3cfc671f752163899a0d5fd95a810d4. 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/KRMIM2001456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd903983f4ca74ef2b3e7898499b224e4815713c355cdc62528a85b63b23ad393. 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/QM6P42227261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21636a0af7b9b903222bf16e213dd7d000c2ce47957157d9da12b95dc0cba77c. 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/KRA382000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060013f6832639b16bb71bb627c22ecd3ef2e9573891d4c7b6429dd865608d52. 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/KRA382003384.
No Gravity (Prod. Jay Park & DJ Wegun & WOOGIE & GroovyRoom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ec09a0dafc53a5d618abd8d711238f6c95c293934e33e9c95d7b16d7b5ee70. 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/KRA381904332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0ce002373514950a52ba6bee13e91a103afdbcd5812e46f1f4abda0517affe. 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/KRA381904406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f27f3070a4eceb9c45bf60d42205e6e8f3c9ef2af2343b75a64068a2185110. 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/KRMIM2203199.
How it feels (Feat. Reddy) (Prod. CODE KUNST)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31b5d69687fe5cf0aa27680a6aead936a733333acfe6dce40dd6a85896b9d60. 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/KRA381904496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd207ddaa192712c25d97e298aaf0850fcfaf3aa7e6a2b2aedc2adeeba8431328. 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/KRMIM2116343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6bf1137655add5b8e5b025eafaf7c1930be98c66b9e02a3cd4262cd376c9d9. 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/KRMIM2446218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b98c9205810d1535679a8d4d8c579c283d7dad4459cf8753c442f69c4c312a5. 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/KRA381904694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0e4038a4088d11867f67f7fb0918a23d4b6c99b76f28a767b058966bc8d482. 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/QZK6N2044875.
추억엔 힘이 없지 / Memories got no power (feat. MELOH)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72cc9daeb65aa2199b405c311300b1af3c064710cba08f2f4671ce68b6e1acc. 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/KSA002100471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec97c7338c3e62ea45316bfd7b94f74f3283ef88c9960d6977d632fc7da9268. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/KRMIM2022192.
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