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 0x2a3f34cede6a32aa4beadcab854b0836b8c48a4f6feeb66fd79aa7fcc3b417e5. 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/e17db4a6-eb04-479b-b2b9-c3a691132215.json and https://artists.proofprofile.net/proofs/artist/e17db4a6-eb04-479b-b2b9-c3a691132215.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 0xdb7dcfe423eb6b3a9a9aabab0274403c58c8781ecb4a54e00acff9a266dbbb10. 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/NLH212300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bacc20d7934b046526f53ce0381aa179c64b3720128e3b8b541f47c28d3e55. 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/NLH212300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1767e55b97486da9015706916bd1218ebaf9983bf93fcfe1469dee1387e2a93b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLH212300186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac9e6170a5ef542a4d70d7a3a76c2ab7cac7756bb1e031111f8911a6d3cee7a. 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/NLH212300187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef0964fd36c5dafa7027d591e462d9788a2cac65857ed5d6e59cd74ec35ffb7. 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/NLH212300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349cf1ec79009149fb2e3db7892c89d204bc03deb9b16d839f1b1019f3ce7d01. 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/NLH212300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70c1c4d42013fad1aca57a96157b4f7de32f70a6657a38687ad7eeb151af90a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLH212300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f9d1e1da4392f7a445259ab4d7dc98b4fa137cb614a6bb288c48223798fef1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLH212300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f70e49863cfe2448b8fa33012f7fc458707040829cd0525b8e9f491851c124. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLH212300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4b3d3f5fb7d96e914cb2d85bb21133bf4117bf2b0220dad044d6b5fcbca035. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLH212300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce094c03b5b1f0f74ad14a7f53468d8fcfa91c4515075ea6b8854f943fff2027. 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/US8HP2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f6c7271d5e2bc6905e331065b8eb94f18d56d9bfb213cd4709ee4ee691a7d0. 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/US8HP2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79f026af696e7d78f709d533ff7b2571610cda2f6ecd446c63d4a470c65973f. 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/ES7712264201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e168d3d4dbc5f476532a3ede8ff50a175a28df61dd166091a3d1a1a3ddc6a7. 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/ES7712264206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5a179549badd852ef2cfae46fcd4897c1d6804eca2746013015ca96e287cdc. 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/QZNWT2065394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1b637918a914509399920a1a0c7d956438dc0b072da26c1f7e9aabb8d7e910. 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/QZNWT2065398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc42847b973dc9e38e53be4b72516d7b828f35e87e85b7e9631723e49ebb10ba. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TLVEM2484787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1767e55b97486da9015706916bd1218ebaf9983bf93fcfe1469dee1387e2a93b. 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/NLH212300186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f70e49863cfe2448b8fa33012f7fc458707040829cd0525b8e9f491851c124. 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/NLH212300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f9d1e1da4392f7a445259ab4d7dc98b4fa137cb614a6bb288c48223798fef1. 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/NLH212300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2923c13147942608ec5a9ec4abe7c6026a4d8634c0b53c1035522210c71419. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6N2226499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ee49e7607f1ae77624f76ed55c95a81b2022d7cada7fbb20e1a90f33e0bcf1. 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/QZK6N2226501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d91162286d3b7a98383314e12ae16ec483369b8df8dca7065586329346cb2e. 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/QZK6N2226503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f2b4e8f5be46dccdf158ccf56b5cee81c5b47bb6f6643c1bf7aa145760173c. 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/DEY472085380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cf523693f4c869d36034808828315718538e992dbfd133b4af28fb45ae918d. 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/DEY472085382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82fb5d454410bbee447bb9500b5a25f17846ed15ae521c219b50c1c83fb72ed. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T17:30:30Z), 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/QZFZ62211811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1503022d9ab9345e5f7fcbb7268577714c776e4cbeb124993825677523bfda52. 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/QZES82281436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a857e401d42f845bd5863e6af642a2a03b0be5fd5ea6cd2e9f9570d12f1f5d2. 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/QZMEM2147358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82fb5d454410bbee447bb9500b5a25f17846ed15ae521c219b50c1c83fb72ed. 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/QZFZ62211811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2699860e1d159406b6f6c755e175d42d99bcf685d2aa38de30be5e7594c86a. 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/QZKX72300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faee5e4051e2b84efe5d9402d60395f42c6a6b96738299c79cf4ec8bb8e07c5. 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/QZK6F2171721.