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 0x6ae640ff81bb75b8a1abd6714ced57342457ea0cb5bd3c1dde5ed5027b3b222e. 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/2bf643ec-9539-462a-8689-f7e4c3225854.json and https://artists.proofprofile.net/proofs/artist/2bf643ec-9539-462a-8689-f7e4c3225854.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 0x7cf8fd0c1b48f5e94744202cfb16037160fd7f9c50de1e911bd89db912695de5. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USCGJ2235344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3c4c11f95b0c3fabd05669ca09b35b0ff1e9d366d68113d6332de3d3a4b7fa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USCGJ2235345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe731553640ca4e08570003ed981a45700f3289866972472477aa332a9b90553b. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:33:01Z), 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/USCGJ2235346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c315ddf4d9ca9dc8dd0a0a050913137361c6301150542a7f72fa947fd900efb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ2235347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bbb5c43ef095512e980653a71842add3e8a0bfd62962d3780c6ebdd80214b3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCGJ2235350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef9af4633237b6f69162aead9750d0de8646b2cebc339c008e80ca9050c6fef. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USCGJ2235352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04ec707fb756cd564e502447729b2dccd6966eaba084a48810ddcd28d3824cb. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/USL4R2217422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04159b5c684657fadbc4ba2f70c5923db6491f0a27caf79d72bd860df0a20a8e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USL4R2351614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c64f899f24e2aa3f9dab01097b13ebba2e6e33a325e0471ac623f1fd67f3d7. 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/USL4R2351618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc48d40e2a47e73f63badb3a07bc93153d8adbb1960b02d6f2560e830e635459. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:20:01Z), 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/USL4R2351619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cfa1b0f5e94860de16ec1202e962a7a6bc67350ea8064dc2b1ba95119c0ff3. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USL4R2351621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd925a942e298d593e6a2f8b4522b156c6bddb7acb4b4676e9d947bfb3893d90b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USL4R2351622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dce9fab65491491e98c1546ccb27ffa98663202b32dad741961586b48c1d4e. 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/USL4R2351623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbe3bbe523504f7771e32eb93746c69bae6e0585c4b68ceaa4b75237c0d3fb0. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:52:21Z), 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/USL4R2351625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a64d31049039809175e36864303d2bde9a2aeccb65a278ccaa2b97510b33e8. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USL4R2351626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8dfcb262a0f0da2bee9e68fa05aa908aac7f9ab96a02fe10f7c434064716ea. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/USCGJ2415228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d25cd7eec6a40ca56d7119e95086b7dee903327392df8c882b7e5cb41fb9f79. 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/USCGJ2415231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108fc426566b95530573cf58347f0b7fe573102c6ee87e0cb9a25643197896f3. 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/USCGJ2415232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2ab72134da6ca9cda35f0c37a8ed9df85df931bbddcd483c30cca817d82d62. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/USHM82428490.