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 0x4035fdd01652c550ded939f0b7514cae457e40c1e194866c0f709efbeca5c8ae. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6fe3c5e-70f7-41c0-8509-45ae09db41da.json and https://artists.proofprofile.net/proofs/artist/c6fe3c5e-70f7-41c0-8509-45ae09db41da.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 0x0b92ef879ece2f4b5c19d9d92b1f339eb0bc952b25ef353f899be7329839c4d9. 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/KRMIM2430489.
Don’t try this at Home (Feat. Lotionmoney)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d06c3588838ea9350c3603120d8b3bc7d9d41e7cc78a80f9c6a8e17d8a285c. 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/KRMIM2451252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dc08b7075e79501cf4475fc6ffadf59750c7d8e7a70ceef11cc5e52c36b93b. 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/QZWVW2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78426ca93e69f0f841c27b915660c7ecdb71bffb5b7aa0bb50a186b6630dcc8f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZWVW2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d91a9e4c2fdf057341303d77d070777c18790b6ba5ff10c4829f251d17d7c27. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZWVW2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb931a48141072fcb6f6bbe8b30a461e21749c2ec872e54bf0325c2766409b39b. 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/KRMIM2344443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a837fbf7573ea07ea5940636f9812bbb7ff50a664bf954d16f3e06e089428ee. 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/KRMIM2344444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c90e1e53ecfbdd0a473c984e72c8266fccfc58e46d2e10fc216d4952cbc06b. 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/KRMIM2344446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c325f133bf16c3d404907650b686645d6252eefb71161953a61796b1fe8ce21. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/KRMIM2335160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0959a7e2b7a177a68ec86d3673ed77bc9b79924a69b879dba7289ba7f6a56f73. 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/KRC712300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cca74a3bafb890c372c1229fdc845c8f28a5af18400e2b9e943c0a896abfa0b. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/KRC712300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326276e0afc9fee5ae802c4cd1a691000b6e72e21f86a796c12934123701dbb3. 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/KRC712300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd299512a33a5f34b87f66b8fac63dba2ba70b79e97af8adc7672bac245e28d1. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/KRC712300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6db279868a183a89554cb3ac6f81f67117ebc250cc7bc815a531337cbd4688. 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/KRC712300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d75c9bf12e787c5ab95d2e2890183a9e994f84928fc1a974efd60de0b9312f4. 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/KRC712300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27824ea1f3937bd8476cd97738b6f0778bb81276cc899da5c13351822656e0c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/KRC712300057.