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 0xe8b305d47a843ef76fc6dafeae30447950defb8efd35131715efb5445ca99ff4. 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/0a3e6497-956c-403b-bf01-0755a58b5b15.json and https://artists.proofprofile.net/proofs/artist/0a3e6497-956c-403b-bf01-0755a58b5b15.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 0xf029b97703e8cdd0488c9259b0615f17b8ea6a4fbcb9b398bd295a691e9c0164. 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/KRMIM2447795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a58b4c330c940a8b7debbb7e08e1cd0d66d8533f6bda32705d7f2c356225986. 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/KRMIM2439470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782e4a180681cf77ce1ec6885a70003b491673ca96e83c4bc92aefdba38982cd. 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/KRNAR2318535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2908101fb44819cb60c45846cad0e89dee1391a53ee1d49ddeb91913dabedfe8. 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/KRNAR2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc133944ae89eb5a7158c955ce437335d8ef6f837d8a6b3f968ced0ca4ccc1d4b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/KRMIM2218993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac2e5f6dfbfcb7eaa563b84ac439b00fdb9afa22c5555c2ffb9f2ca770fc0a8. 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/KRMIM2218994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62634959ccfa57e8843f82cf34db905557f7fcef044034b3a6fc5a768b600e6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRMIM2218995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32d7af1eee39ef3b3f8436122ebc215e382afb5c6957e9a351696a48b654965. 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/KRMIM2218996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28da4aecadd2b4d7b2051ffaa0604c1f372fad7254cc3d6903d513a4db80a825. 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/KRMIM2218997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a31225746fb142bd03173e33c99941fe10b02e83e35e77c82aafb8e24932e6. 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/KRMIM2140852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04e9e7bc63e6b1767a585c04d7444300563f600ee0b5f9fcf4dc2ba71184ad0. 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/KSA002100411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397ef1422a34b723a336c96119faee6de78b622e2180a710bb803b41c744db8d. 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/KRMIM2035609.
a particular thing (feat. Parc jae jung)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7705eb8dd8dcd502a0d0b0977a8da407a61474b3518b1d9604173703142c785. 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/KRMIM2005872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd454dce12ca7f8cf9dd9cd8ea64cb1d2d8108d8e6c9306b7e816217378ff0ccf. 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/KRMIM2005873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae60aa4c4809ddbe055f70687b83c934b9d437945e283ecea00a6408e7323f25. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRMIM2005875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f0ac702bc6a666ff1d9b42753ebac9f6f6718d74dd512fc189f378f718c5c4. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/KRMIM2005874.
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 0x29ba49246885638afa8735056033efc340896005a3c988e184b2ee63b7f69f5a. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/KRMIM2005877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754d626345415acfa0335c7b2374a00aca91c94bb11eb8db25402647781202df. 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/KRMIM1916751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf6f60efd65faa8d50540bf27c776a32b0f36ecaa45ea298194bb385df2aa55. 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/KRMIM1909161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44cdd0985d8c262a29c09e0993ce431198581bc3ad982ed8104dd1f09653e55. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRMIM1906543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a9de6b46cbf6f90acd46440ee6d0a06fbec1ccb19695f826409f7b60a10874. 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/KRB471801889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1aa6b293b5312dd373cc9987469482669445d031eee3c253dc945fe4d40776. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRB471801326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1396c9435a20e5b0e572db72c3620d937cbb94dfa069e33afc594a5c0ccbe9da. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/KRB471801325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89995dfe261e7489e9a641fb700f78651c899bae67b795c697a715a04f4bdc5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UK6821400964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b38e93507bc95bb24cd669b164c261c9e1e0ca8d20aca16af430bb2ed1a75a. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/UK6821400965.