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 0x342655c0657589d05e1a380e075e878656a5da523aa39aa6500cafb1ea399702. 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/8104d6b8-daa4-4b31-828a-812f6899c026.json and https://artists.proofprofile.net/proofs/artist/8104d6b8-daa4-4b31-828a-812f6899c026.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 0x14992df676ca055f7aa025ac72e3e4bd3560d679c053d66deb35b32aa7cbf947. 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/PLC062240228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320d6322b68da59f631be00b5bc0ec05d363a7bb08a93119f0c3f90bdba33923. 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/PLC062365479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3848c4f1bf3db86f1176f927bffffb98951cb4ba57d9b4314c35c924911b6ce9. 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/PLC062372064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423e27999795841cd658b9d4e6322048c2121e592c51a873f70b1b0c76a257d2. 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/PLC062427777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8582648eeb7f4871f4748a939377e97fe48d771fc5a7c93495ca869b7fc7db8. 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/PLC062402913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8d8f0c9e91f6b1ddb7df236ac06f28dd9a0a961a80e2f2dde96d9f3fd1f2ec. 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/PLC062401102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63725542d17ce89da7cee396f01c49ccd528fc4baa1259acecef33193179cb19. 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/PLC062396018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1f9cf748a1ae32af8b7698a41197d35ec945606d0b739d9efebf34f380e80d. 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/PLC062390119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42647cd7069cfcfee464460c542c482809c7a2d3423162cf2b06d4f8d04fa102. 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/PLC062390018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e3472bc835766f110a0ec941311fd782a03882eb2b2f38b78ca34702684fc2. 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/PLC062389725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cca1487431b53368e725e9e69afa30d84632e041357a0644deebbd3bb17450. 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/PLC062388536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1e7129f0b487b1602c203cd372a48d032c9033694991322f0530998aa982b0. 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/PLC062384175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3848c4f1bf3db86f1176f927bffffb98951cb4ba57d9b4314c35c924911b6ce9. 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/PLC062372064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320d6322b68da59f631be00b5bc0ec05d363a7bb08a93119f0c3f90bdba33923. 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/PLC062365479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c95a20b940dafa17c4fdc14cf04e405fdb77b26b7d4306d6d6b97c428823e1c. 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/PLC062259344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a50ba474f7d28dd2829611e3444029d5f05fb41afa1f2722d7728254b8778ec. 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/PLC062242308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14992df676ca055f7aa025ac72e3e4bd3560d679c053d66deb35b32aa7cbf947. 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/PLC062240228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e66c033195217e55d49770ca6134357d8d938dc1eed770665dfc66a9325bd4. 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/PLC062239907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122c8131da245430c0093702334856be09ec25f2d8c5162f056f7fcbbd5e8c6b. 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/PLC062236712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806a7cfe4625110ffdd523879f21e04088daf5bdec3a682bb732c34f4c4210c1. 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/PLC062414782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e0d2c620ea0b561d40f42e0cab4045c973d0b20b918efefee74fa2df1781e5. 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/PLC062414783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb43f82d16f5e1079e8d0c929016cfd3957b3573b86cfd76cc701ed2b19720b2. 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/PLC062414784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63725542d17ce89da7cee396f01c49ccd528fc4baa1259acecef33193179cb19. 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/PLC062396018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e3472bc835766f110a0ec941311fd782a03882eb2b2f38b78ca34702684fc2. 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/PLC062389725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cca1487431b53368e725e9e69afa30d84632e041357a0644deebbd3bb17450. 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/PLC062388536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42647cd7069cfcfee464460c542c482809c7a2d3423162cf2b06d4f8d04fa102. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PLC062390018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa798582bacec58f44fea3778cae0c9bad2abc20ba95d808c3c5a439d0a55960b. 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/PLC062396648.