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 0x01a076a4ea185af60d89c426c29713766c09230091f02d83b4fa243af315a05f. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7588c126-f2e7-43c2-9488-18c838eccfb8.json and https://artists.proofprofile.net/proofs/artist/7588c126-f2e7-43c2-9488-18c838eccfb8.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 0x756c2e64c0366754f984a4c7563eeb68e36920bbe50482eab8732f0e40f036dc. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZTBB2320810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd95d51e39117a0b1043fcd732f3946ba31ead4b459f7642c1c27265358d77d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:28:51Z), 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/QZTBB2320811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92f83e53baac301bd81feaf62e934a170f4205d77819a1a8a33d5d2c173d1b5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6P2329959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49dd0924bdee99493d3df321818ce227f215a2b85037dbdf5a25f6422409aad. 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/QZTBB2320812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6ee3225b336338157784897ef6745cfd1c95c33e745f2f06a3710dcf57fede. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTBB2320814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512b3d00146501983671071aee5cd1f5f0c20e4464830f252bdb00fc9b10500a. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZK6J2438216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3041056a1edeb47f02116be5b48742bb16255578a8ce2830c67dd20798520561. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:23:43Z), 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/QZK6J2438217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b8ff53f5fd5c02484b2a4f5000d0ab8e5cbbc59decb28050ab64dce216b93a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEQN42500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005676046fabbc9e76dd6aecde6dd0916653ce3708f7225c397f1ba3f80ad994. 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/DEQN42500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4178ba062dc04632aed1840041b0c1f9cf684b69789fc350b13312d4154e337f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/DEQN42500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005676046fabbc9e76dd6aecde6dd0916653ce3708f7225c397f1ba3f80ad994. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEQN42500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d79c8ce714970a8c26a96fe48caf18e5a0f0ece5809e74d27191d7660fa860. 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/DEQN42500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b8ff53f5fd5c02484b2a4f5000d0ab8e5cbbc59decb28050ab64dce216b93a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEQN42500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61f94321097a2352c5206da8d6c47fca4404c5cf3914206622fa8ddcba1d21c. 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/DEQN42500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b41eb60c1ba0d344043275aad17c75edfce69f25c952d283b19952be0dbc8f. 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/DEQN42500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787a17cbbd070f01a43961349e0f2969ac2f7a8b0bca6b8f8a031ed6a5b69694. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/DEQN42500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26db9c66f43461e76c23372c8c0f18bc852d03ebb3e06fd37fc191e2c9f7ae8. 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/DEQN42500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b8d3f6c7410e51e4f52a7330c5f1b24a420a5bd06cd3f18644ddbb1fab8237. 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/DEQN42500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce04c5d437da8e9ce3c1bc9a6f743c17aa24ed2f0d2c05d79e73559e587d0ea. 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/DEQN42500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53006fdb7a83669c87d29e68bc3dda454134fdc76e1742208f63c5e36322ce0. 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/DEQN42500057.