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 0x52140464689c1379c0f91b1243fd2ba46ec99f3d7907698d3a526d479e684957. 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/923bfc0c-3f2f-463e-87d3-84b6dc637b19.json and https://artists.proofprofile.net/proofs/artist/923bfc0c-3f2f-463e-87d3-84b6dc637b19.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 0x2fe2c3d71ade486c3d4e42bca36d0e5b558a7fe1b39149c95b6a7715c5663831. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRX282011862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaffba80fe5c5213a076a5b2fe680a22e9384c26de3be88ec7f2bed41db26bcb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR10S2103113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b4169d88a88b1807a79965f7c7e81319a53bd581a28df145559a2efd1963d8. 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/FRX282146627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b4169d88a88b1807a79965f7c7e81319a53bd581a28df145559a2efd1963d8. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:01:18Z), 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/FRX282146627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2e980e54e89a560fe5211392692200bcb5eab133ab61d546f2e518b963bba3. 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/FRX282146628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ed12a3c8e99543e1edaa8616614d3624daa746dcade42df315846b4af1ff9e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRX282146629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5554350dd4c6dcd0479ce67be0ee7737a9c517ed1d5fe710d4db4d955f237ff. 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/FRX282146630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a05197584136656fc7e55c3bcf69defc8086448c37e760bb1be10553ec13c1. 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/DGA052246275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0278ffeaf6d934da293de3a44aa5a3484d53f8dac9703bc107a2b69645a0b5c7. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DGA092227529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4188a67c3f07b5fa667f86179698543ee1754ddd86cb7b99d327e2502a20f32. 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/FRX202326815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37232bfaf2a8ad3844a4923ab272a4e40607dc3bf7a7fe344f8f34f7a3c40a5e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FRX452368361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadc9d1a933ed49d742c0911be9a8890883cc0cc4751c30e210b65b3f63646ea. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:18:41Z), 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/FRX452368365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5891a808cd2d98649b90dc2613ec51fc169f8ff1b569cf4ed830d7d66d43de. 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/FRX452368368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1bd0556bea9409ecdae844d2a671d78d14e54045ea1f155271dcf9a2f4ba94. 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/FRX452368369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab98a16bdfa80768957598b4656fe8a67f46343dd276b19fc11a4d765213961. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX452368372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4394bd1778d6f4c25fbe880409c05242a203720694063a7829621e372cfd063f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX452368375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da634a645868a1f22542b01dcdd0fff1aa884515bd751cace111602c9b692b2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX452368376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae5f357dbd345b0ca9b9e48dc7b0eb8e6c6638bd70a8ef34504278b59da8a9d. 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/FR8FB2209020.