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 0x730ba101794861cb599286386645f2d2e0163bc4415f88ee653bcdcee865a48f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a332264c-2be6-4a8d-9e88-1beff30eae05.json and https://artists.proofprofile.net/proofs/artist/a332264c-2be6-4a8d-9e88-1beff30eae05.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 0x6900e794c00c315b87456514fb9242881cee69bc49f7327ce1c3251fb9cf63c2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CHF032406550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c62aa334bc47ff43d4099a5cdc1a71b72f0e42c2148d5cbc82c6d072db5106. 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/QZK6M2330074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3cbdea3af823a855a069a17ab82bbb4ff6799bc0207cc13ee45e6104927bd4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6M2330075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6766d5a0e94ed02b08ab681d6f8ea934c7ede9eb645828b6c9d31ce4382da3b8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEN2107898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1270fb511f3a37d6457f08da1ce429acb0fa20ff6cf7f3f599ba307cff05a0ea. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTB92216784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6356333e40baf6248635454c964b12a6f0c46a5a59c2359f5752d582f6dea75. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTB92216787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff0cdbcb8f0d4e3262a5c3d66b9ae8b90725c7e03bbceab4dfa5d0e2194c808. 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/QZTB92216788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5cdab44472022c41945cf79647a6125a3d7d04a1db501cdb2d0f6a650bb935. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTB92216789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fd174f28326d94632caa1b3f6fbee977ecb6050b99630762acd890d33995a5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMEN2107892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb5b96430febdf049943a1e2fd013371be13edcc8eb39f7fbd10cf6137268dd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA42127914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c010c1f37f466a14a1f9f745f67fce3badd24fdee10e2a83b90f6427ed046f. 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/QZDA42127916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1be452d81a4fa3668bfb37f9d45d6052365ce1ef791335d14d2413f3fb7dd0. 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/QZDA42127917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec692ebb16469dafd7bd5fa4a120cf54953c472109240dd28258ba907274e5f2. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZDA42127919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813cc7bfb6debbb92d44b04bc96ab6730e17508a0aa22b164ce62c7f479c5f3a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWY2091618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415492a27cb1ac735f11dd39e43402a76cd25c7466bf5ed1117a209b1ae4224c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6G2025420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54def82d2fd302eb175e722905b17d7faa541c325e5d2a81e7d0ee568ee68441. 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/QZK6G2025422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991a0687d309a700f6a88f53170800c9bf2fccad154404f315244ff5e2442ce1. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QZK6G2025423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c10432f7405c5409eb898e9370607e02eb03fbbc3567f4d094c7978afba2878. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6G2025425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ca80db4ed53ac9c9d274d7f9ca5523af18d14b8ae8a28ff437ac546ad3a073. 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/QZNWY2091621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde481a256cd51340ed1384ba54144832bfce5924bf626da6c27f0061be5d069. 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/QZNWY2091624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a64fa31cb2d2c571b289b192c1f8940ace72b0239b08dd9fa12751e99faed4c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWY2091627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c86367e2043c485feee8bd547310bb9a5264abbd58a941d097b5f8ba0563c95. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWY2091632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939b06c184c082c266496bed6d6eab8accd95206c6e95460f2d863770c3946fd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWY2091633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f3fa046b25ac38fa8127df7794e2e25caa9e76ae55ba741b1a92cd79c0579d. 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/QZNWY2091634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54def82d2fd302eb175e722905b17d7faa541c325e5d2a81e7d0ee568ee68441. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6G2025422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991a0687d309a700f6a88f53170800c9bf2fccad154404f315244ff5e2442ce1. 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/QZK6G2025423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c10432f7405c5409eb898e9370607e02eb03fbbc3567f4d094c7978afba2878. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6G2025425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59cb18a41ea67081ae84c8ccebf3caffad6e591f95e22a10ba4d3a852de3816. 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/QZWFN2325851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf83903ab1c8a14a86177082e486fbdb52e82b2604391b33d2b93a9fc84a57c1. 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/CHF032406568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66579372ff3929c0f0e1540991f11b4ba55cd3c6ff5ea74665fb5d65580ba85a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CHF032404845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a19e17ca73002b13fa8faf3ab3e21f32962e05f28cf0bcf4592b369146ceabc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMER2384492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326315e3319ee6e0763ad16352b4b072c5dc09e08c5b404ea53513b37f863456. 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/SE6I32255234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b45b006859b6105d479801f5334fc9363bb1ab8ed5b3a73c3cd3001f3cbb650. 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/QZHNA2043857.