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 0x5f0db19549b82d4c5e623d7e38d77f3a8361423c77a440a8fe0307d88eb12d10. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30e0adba-4528-473e-9e17-8ce36027a035.json and https://artists.proofprofile.net/proofs/artist/30e0adba-4528-473e-9e17-8ce36027a035.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 0x2e6386f42871ebc4027f5ea8c7d61bb8671ff88a6fdc4e7b49bade4511003d45. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:05:42Z), 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/TCABU1481840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5e006af9ddb503df7074814357d4ad808e519331825ed3578e36fe996ea0ad. 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/TCABU1481905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643a51d799e97320e974d5bc23d6e61faaafc4d62b0357748d9dad88cf468c37. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCABU1481906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab960f3c58b71ff745a43d86b4fd380242c76dd87a6cfbea1ee80d8916352a8. 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/TCABU1481909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b97bb98613c22b2b00db1cd479e492c0ba021b9e743fe044ba0bbe6760af09. 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/QM6N22568112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda450ef7b7ce0ecd2346fc24ed52eb19d504cbacc71e60fac8b9717c1b48db7e. 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/QM6N22568113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e3dd9e491997fc8c30edad37fa32a3875ead0d67e13048a1d90ed75e541ade. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM6N22568114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979ee8041bf33dc491bbdf7506f60d254b30de3f5ef2c1ed29568ecd556798ef. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QM6N22568115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814f0ad78de54f4cbe93275702051902f506af566997f987bc5482a4b13c7ef0. 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/QM6N22568116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377c8e259ea80cf9cadc5bff494f5ca108f4fb78551797f8d5c5fdef88652a58. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:09:22Z), 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/QM6N22568117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edeb052181d5046d57f48b3a7fb88133caa1fdf4959f55eb2f57a7051c518dd. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QM6N22568118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba3fcad84f024a526f7adb6221083a7fa1144d823432ada77f5f58893f2eb6a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM6N22568119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80356462dd84dc7491ea824161ea0a79738733ad41300e387a1b47f34974a1c7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6N22568120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6fad8dd5e9f6513c9dfc56d34cbcbb6cf1f2353ac966de6b650366bb24188d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:35:06Z), 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/QM6N22568121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4179634d63ee1677432ce29602baf1028d2bb4847272ffa6fec22eee841c0e0. 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/QM6N22568122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09796ef71210e049e4bc20f49f0cf06d7e9e825bda9f6d8870ca31671143e6f8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM6N22568123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c079ae07a9f8f07ef06bd8d5d892c31ac0682a3224be1351c6c406a4b5fa21. 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/QM6N22568124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d894b55ffa711c2c4ee66e6209dda40dad89024f45f02694c62af57fd4b31b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QM6N22568125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8049e365f56e05a9430238fb8896b8201f13b067945146cef09c013a6fd23b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM6N22568126.