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 0x0925b081fc7651a8aef833a90b5f3eb0d12c58899bd85671ffa29d31d29e3864. 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/a2e01f55-c748-4afe-a8ad-701ac72bc649.json and https://artists.proofprofile.net/proofs/artist/a2e01f55-c748-4afe-a8ad-701ac72bc649.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 0x279b54e42b1b8d823c50b827ac2dedda0d728a56c905212268c5c119d10372e8. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:33Z), 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/USDY42376723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe4260def897f9b7f5ad6ad1c7845b310d98ae4c88475acf3ae463baf1842f9. 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/USDY42376724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ac932633d9f73d17809e73e75bda7061f30de42750237f90cee2b3875fa439. Chain 2 (Bitcoin): anchored in block 957684 (2026-07-12T09:22:41Z), 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/USDY42376726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedfcaba946ca9d752bc28446bd0df10592e4bd3301420db073ea52be87a1ff5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USDY42376727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0865a715987bdff6c693b183ffa5dcc3d0e501e1e270617669efd36c115cfb. 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/USDY42376728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b0b38423cff2f00ba9a1c0819251cee398b7fab28cd21edf8999ea6a60313b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDY42376731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7630517a2870d91b187ba8a8b96a3d0b020ae5d99ba13a973a80eb86fa60c380. 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/USDY42376732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fda27e6eb876254105e967761e66f749c4ca1b58c7b35b8aca53289c78e016. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/USDY42376736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5716a338e7cf6f0d07b5b9c1a41fe8bd56be9c5136e1dd14fc4f619ffd06845a. 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/USHM22415494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe280cdf6f503b212eee0929475a94eaa636fc95bbaef48d2c1ea5fabb31ee80. Chain 2 (Bitcoin): anchored in block 957684 (2026-07-12T09:22:41Z), 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/USCGH2423976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b89bfe309a9196a508700317b958ca45de47d85dba0fd32eee9c49eacfe5a2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:01:52Z), 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/USCGH2437536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3116f63d0377ead1fcb6c0ec41b43a27796ba85666dd490614ac5081e2a628cd. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USCGH2438638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e635de8dfe22c1a462142a4cf12c69e4d88dfca2384c3222ccb1ca47ed63451. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USCGH2438645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6353413e2ae4812477db8d08f11d46141b2282b175307f861005315c2361e16c. 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/USCGH2451054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c5b4a3a8a356ba3640e9e34a7cab4088e3ee212a1657c928f6c84ae3a36c98. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USCGH2451055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701f2e356b9cda9d5f820838e1d70d2a624b5d2c4d62f2d5a2f24f8e3aacef28. 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/USDY42478751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a13e5c49051f1e5090d2fb1d534e8d1c247cf2d8c9feea2a8bc01da1dc867c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDY42499969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5c0a86f231f43eaa0b931dfaa5cf966fd7c8841df6bc1c74dcd90b4a4f4290. 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/USHM22401031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a5c00993aece7210a3e6f846269bec4388bf34cd3c00da46444c031f8a034d. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/USHM22479518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6a5c08125a2b873123bbd99a41c828f0b6a500ad3fdc23b18585dd374b6763. 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/USL4Q2417709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa814217478b5404425cbc9732ada610d11170e88d797ead62af50732476f43ca. Chain 2 (Bitcoin): anchored in block 957692 (2026-07-12T10:37:51Z), 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/USX9P2474616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa042f564cd4e765964acc2b9083340e838186abb51935899336f1f2632437cb6. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USHM92519963.