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 0xacbd538bdcaa50776eb5e69820125863fa3376acadd629c22ebc6b15dcbfe529. 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/38a08afd-0bad-46cd-b92c-43617298ed76.json and https://artists.proofprofile.net/proofs/artist/38a08afd-0bad-46cd-b92c-43617298ed76.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 0xbca9225edb7f216f6af398695f139f132a6df0022a9d615ef18c1291c9b4af23. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/USCGJ2232552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb71ed5b3b0e93367b07167d70feb82ac49a95c2367a91a0cd3c3d423025e58c. 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/USCGJ2255833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448bdcf31adfdcc9e7fa57ca2d30a517f904b7162132f05d4b4b0d304e797097. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42370020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9f240e48a7c28c977402f7493629f7f4e7df679e9033e3bd64ba2d8678f344. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USCGJ2190595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60e0acbd8c9da5e597e2e40b276ced669d1c6d39b004d4972575694fcbfe999. 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/QMDA72211365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4142afba3002ae326ee459e965f7e7b256b1c274d8feac601b8c78c722bf066e. 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/GBWUL1805798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8d04b137b57647e4f562b05761aeb34c6bc156a9d5b431eb91739195dde34c. 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/QZLQU2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60e0acbd8c9da5e597e2e40b276ced669d1c6d39b004d4972575694fcbfe999. 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/QMDA72211365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89635e7a7e1d2004bc03f1d30190998ae0edb505ab43d09fa5b4abed1b77082. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2235515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89635e7a7e1d2004bc03f1d30190998ae0edb505ab43d09fa5b4abed1b77082. 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/QM4TW2235515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818b3273f41690ac7ca37e16502767ca1b4448800905ecedb8e47e33e462a4ed. 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/QMDA72373697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f6f0a0da8229dcf29f0a00cbbd477b0f1ef5ccbae723f6b703a1b2fabeb033. 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/QMFME2382161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43822fb36b66d9d1c5f29bc2ad297f53bc1c53f0d2adb64f080c3ff57376f171. 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/QM4TX2261583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7059bd6300ae8f0e101e71006f141b9ce972543e5d1469aa8795846fda8a0de. 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/QM4TX2261585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea64a3ca9300c7ea53d362a3211abe7d9369ac0b82f1711dc509fcc6d2b1bf7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TX2261587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1a66e32b8c79b07329dece2ccd5a4a9782f6d1a8965ff498ec7f47ae70d0ca. 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/QM4TX2261590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c75eea270e73c9e5cf45393763c86bd7fff25617acb79fef0abf12140a09fb. 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/QM4TX2261592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2addd7ac7d5acb15b76757a699f74affdf5f36081d4d0af2ea6665cc465d3c7c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDY42003198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae909d61d37be9818b92535edc501797b1cd7d33cea5aa64b462a67050f41784. 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/USDY42003202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08304e82cb8ef47faec6970f11eebf8f95a14acca25762bbd1572278703c87a. 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/USHM91986300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee98a91bfd36517994fd826156de31e419ecdc1c42ca90e90a608a8e6406247c. 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/QM6N22473058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f6f0a0da8229dcf29f0a00cbbd477b0f1ef5ccbae723f6b703a1b2fabeb033. 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/QMFME2382161.