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 0x18f6d0ccc735e02c9eaef68e13571b4bbef069693c03bbaf96ca9516027882b6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17bdf730-1b7d-483c-9e47-891f51a9cba8.json and https://artists.proofprofile.net/proofs/artist/17bdf730-1b7d-483c-9e47-891f51a9cba8.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 0x2fa7b8c0ac267fa65795c36ce37d5768d3cdeb5d3f29baad7bcf3fd4bb0d6820. 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/QM4TX2337663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a95e5f7f25d066eb807f750fb9ac9202c6902dd7568c1709620d7903e6e9e1. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QM4TX2448853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6cb40cd2c797a2da5cf20bfda11beb11d4683ed7384d569ac30baa22da9275. 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/QM6P42386931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa013e10c2463554d5f666b490d2bae541232dee4a390cf7f3872bbf9f749da2. 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/QM4TX2448855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951f51778486ea6d9316f30da8924460a69485e4b48a10660a7fd51266ddfb4c. 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/QMFMF2315451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118fc19fafaf23672e6f2ceea20ea2122f663b453a16bb3991042631c1a2aeee. 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/QMDA72369268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c20244eb538e5b2995dd694eb149fd7d268650f9376c00da2d1e3343ed66b9. 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/QMDA72369274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6cb40cd2c797a2da5cf20bfda11beb11d4683ed7384d569ac30baa22da9275. 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/QM6P42386931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa7b8c0ac267fa65795c36ce37d5768d3cdeb5d3f29baad7bcf3fd4bb0d6820. 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/QM4TX2337663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa6d6c4177bf8f4b1e64ae76367f088c996f9e2e187202a4835ee2b27ae6ebe. 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/KRB462200585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d9431f28ea53e9324751cee2ed2255954b8c43ff0e79cf5394c17fce015f66. 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/KRB462200449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858b085c9da2654300eb4b630b6ee1968dcb74c3b17bc55633e45d6b25ba5ef5. 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/KRB462200586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347e226682d49bb1d20c5dc7e29530e5b9c9f4bdc473117e8280ad317a97fd97. 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/KRB462200587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78406ca6ad67f58a32a5d5643779394650568de0827cec9c18bbd05b399d508. 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/KRB462200588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e1a2de0a3947bfcdf0e34467bd20aff1d92834ed06844e134fc5adb35f33c6. 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/KRF252100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fd8ba64a8662c0224f4167f724bac81f1f37b1a1ae5b52f97638b4a00866fe. 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/KRF252100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb94fb0173423ce24cfacf6173b519d5d203d47b0434d741c6fb951d72054fb. 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/KRF252100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538be73386d9512ec95fc894c37571d564a171c52a24787948bf71c62dd32967. 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/KRNAR1706068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5943444681ba103e318ea5a18f15c945b57b1a03e494ee1b9e8e0d208f4f6869. 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/KRNAR1704434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c1a2dba1e6950248a6a2d92f461aa487548cd552f69254f976fa057222a2dc. 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/KRNAR1703008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e22ea6ea19dd70cf25017ba0f234afdd336d8ba64de244fe7ee35af9c7a960. 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/QM6P42447174.