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 0x8fdd6623bb2b6dfdcb378701edf3ab5e8a45f8722f9c20bee4d8b030707c69a1. 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/51409f94-20a7-4bed-8886-5bc06019bcfc.json and https://artists.proofprofile.net/proofs/artist/51409f94-20a7-4bed-8886-5bc06019bcfc.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 0x710f8d6f5c6cbeb047f44de5990c004ddad4d26378b7a5bcdd7183731ce377ed. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/TCAFO2104914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b53189e6768633058440c565b06ec6709db0076dc376fe16768ff79b3d5ffe. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:29:39Z), 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/TCAFO2104940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7267a13b96e447588005fd87b2f3121e3dca4e656289f9588c9b155131ec5102. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCAFZ2262790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de3cd42be2951ff078cf1ce5c70c5038729858c81f9004e7bddfe8a92e9e64e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAFZ2262791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87e3832e9be1da0cb554b8a201018ae649d81d6fe006a17c3e5a06885a570cc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAFZ2262798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ad4adcefd7841d29ce0554ff03f30b558c3ba196355bdec171f34a5d07f818. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCAFZ2262799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d4f09665b1ccfc9275c5a22416df779aa6bd9ddbd872fcff87c5b98478883e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:13:53Z), 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/TCAFZ2262801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798a04a017e108c321dba8507c498cd47ee326e17ea42f47196bb89c1afc437e. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAGG2271635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d598e639642bc9ecb45ce0385900a8dd2900a0fc64080c87ffd3ad4dea75f6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAGG2271637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac737e5fec8bfaeb7ec2210e86ebf0a737c03096e4307afcbaf3bd35fb500fe. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAGG2271644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32229ed86cd4e4624bfc971801c468108f5abeaa60978495b67f605b4c63de7d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCAGG2271647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b64ad0b13d20216fe40d437b1cf661768daeefe7c79c7fb2c4835a79e4c4671. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAGG2271650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81ce8a076ada791dce39229d382969860eb42c03f0ddcef1bf31cbf0771fd31. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAGG2271654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66b67459366d280100c5e159d44451f942f9735b408b5ccd112d4c2db9e03bc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAGY2384607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224faea55589384b592e9feb6189b5d6c63f75070b79ab189c0ec3ea2ddfe108. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:43:49Z), 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/TCAGY2384611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6393fcc92be32f735b2a8499ec2137349ca0351891f7df5a5ff51841188dfd1. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAIE2460370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fef07f4aeb6f0859f9f372eb3941a7d6249341b100d3409ac86170e473c3715. 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/QT6622560324.