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 0x86acf7057eac0780c014062c04f6ba9ec327c3da57655ecb89e8e559c7b8d490. 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/4ba3032a-1882-4971-9203-63abfceb5903.json and https://artists.proofprofile.net/proofs/artist/4ba3032a-1882-4971-9203-63abfceb5903.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 0x1da0cf59e50df47cffebaaa704aefd2236936fc86925381d25fd9d4591492868. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:08:40Z), 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/ITZB51600051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7cd3b76d7da07182cc262550763a89af327365c945a0b9a9dd9453c383f4a8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:40:52Z), 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/ITZB51600058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcaf5b3f8b52f95a24ce46a1bda240eaf5e383f498b1b65fc7530d9eecad978. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITZB51600060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cab5d72d832c01b47465170091fb50c580304d73cf9405376a1bbb66b6fcc5. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/ITZB51600061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b504da6840f20f1341c16af8f58bc9f21d306cc2c0c7f9f71d25f1f300b3c1. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/ITZB51600062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446c36e7cd2bb7321ce7ee8b50cf14727fa75d1827390f00cef6c352502c43df. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR6V80622271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71c147514b4bfb099e97b052377c404d58e5c21e876c04db7d1c8fa7ad2431f. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:29:54Z), 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/FR6V80207397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a950e5b3158773960fedb20e7ef230627ce7b4ce933fdffdfd78306466aafc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR6V80207398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309a29996fad9889e4da6cd385b0ca3bf6fe1135abe3a59d4978d7be900593ec. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:27:24Z), 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/FR6V80207400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b95efd2008e5aca1734f3247e35fc1b338c9769df138f418fe5b8ed9eac3bfa. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR6V80412605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dedde058380ec044326c28a201c2b8faebeeaa5a451c17c644b3159c5850da. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR6V80412608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0917159cd333ef56ccda6f1cf2e9cf91079a2f99382f916e096f6bae1dbe36df. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:18:59Z), 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/ITF111200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a9d01e4850e226e00b5fdea97acb4fc05d29602d2e2ccc5b4457add0f796f2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITF111300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe414da01c2fe37eabd4d1b1d7d8cfb40bd785c9324255fa0d96478cef1000f9c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITF111300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4acabf09e41c6adbdcb4743dc954aafd35cc2716ee6da3ab8a212f100dc9fd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITF111300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0eda8777c2dcc7496aa4e2d46764f30f01783336aa7b8c5d64ebd7e546a26e3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ITF111300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5e90185e0bb880733f7d4bf249331731e199c3596e6f3dff06f6dcbf32cd68. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITF111300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85de4911942fde907d2beacfe008563827f108d85f6c8c690449cfea3fe3511. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ITZB51600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ef2425820532bd27c7f7e43ea5a06be8153d53b1324325677cec05fa64c3eb. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/ITZB51600006.