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 0x3991a67e0e16f593e72429da98324f1eea6d6415c1a22392218114b646fc16c7. 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/6d049433-b939-4782-974f-e74f4abbddf7.json and https://artists.proofprofile.net/proofs/artist/6d049433-b939-4782-974f-e74f4abbddf7.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 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 0x9a8ca4f8ad2337e6cc0720a1fb91547196b6c43a528dee5ec710fa66e1a9dcb4. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/KRA341100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a883f11f8b257a8ad59af60a04f5f5adbb4627a627ce53aaf90203e7da2c9e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRA341100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ef9e283eca96a039bbfee206ad96220ef84b2fe9fe8a2cbcfeab3cce9694ca. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/KRA341300372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35abfb82adf1065bb21151488173179adc576f6a0621fd382e42ee888067959c. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/KRA341629916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6781a660e1de8f7ddf58609eb29209ac87b4a57e43a7055db6c36c4815c840e7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/KRA381207730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6112a3665c54d66f19be177ef3d25fe5667e6f453c90777e91b3f0be4ae9e384. 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/KRA341559739.
I don't want (feat.So Jung of LADIES’ CODE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e769872af120121202d66920312e3c9f8497d1280b92309db1ae38bb10bd3d9. 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/KRA381601062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4e14aec0b21be52e07f6a532db654fe4b576f54c209c2c2aa05a75933797f6. 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/KRA381700473.
Stay With Me (Feat. YOOK SUNGJAE of BTOB)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fc8818e7acf3ec77391ec97483d07aa41bcbe821f2d405067c0eb5e0466410. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/KRA381802177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3a19152c0aa82357cc6f8dade2435ced688c95186dadbc0d945500f7ec9335. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/KRA381802178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9939e62ff8140d7affa84d3a78cd6051ead79c02f30770a0b6b05d478a8419. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRA381802182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0af722ad0b7ac2fb705670f5a31c53cf2841e034e50ed6e5fce74da421cd4f2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/KRA381702774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd035be1cdfa219a500739c6ba8982abe9ffd0fd37e865f38b7c02219a23b10d0. 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/KRA381802389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3415ed0ea9b219eab0d699eb180af0296c67981b92e1e89544eea114236eebf5. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/KRA382001739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1aedfe721f0026deed972a794cd74b11fb2dcd52eff86018039967d31df0110. 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/KRA382001742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66d17c5828d375b66a32ce1fc9e3a007b17de0786e26b184399b3489aac8ebb. 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/KRA382163317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8458a687259aa8060d35ba6c1d9fc3cd4ca5e07b3c9549a9e4430747ac39b821. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/KRA382301622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41c42914c20fbc8f8f45028891db9ca01020b9ade320feb009e13440a7cab80. 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/KRA382502342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14932ece2b402a492cddaa0f01f4340c998fb8cfb1b0ef6127ea8c46c2a4226. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/KRA382502346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc36e76305523c9b2041bc23a3d172d2b1ef182c42eb326931d0eaa87196c3f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/KRA382502347.