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 0xff813e7617fa07ff144e989b2cafbe99a2bf03b4c49aacacdd9978b82dafa24d. 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/f468bcdb-f8c1-47b1-9436-ecbd1bd7f1de.json and https://artists.proofprofile.net/proofs/artist/f468bcdb-f8c1-47b1-9436-ecbd1bd7f1de.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 0xbe05c58e0a4122fb145536e4cdc464743ccd374d283b38e6e62f4813e2bad043. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBWUL2282887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fa303a7e93996118e4922a72de0b1117e473bf54ea911f7b8fae03ab9593fc. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBWUL2282852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9638e05518ef1acf8cb22b90f066472d0540ae35c4772e518f24133ba3893561. 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/GBWUL2282864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3e3ae87b2106df7455a11b2bad02d128b747af87ffbf0d9cb33a0338578f7e. 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/GBWUL2282866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2b7dff6ad7fa4aeaff692ba2b867c20826bad914f457a97fed460685e9bba7. 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/GBWUL2282883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d351a33ce48ca47153811703215e729cdd65514e46ec7b07ffb6a515e015945. 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/QZMHL2277877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe251a2e9a14d3b17010aa1b27f24a68aac6c1a51716f70906c44301a9dfb202a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:55Z), 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/QZTRX2225656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0b260929468333cacf5eee28acd967563cfb627e9169b36a91a05607437e21. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/DEH742413989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceadb3881a52a40d46e37f4b693516489578c35933714b9c46b15e134baafc51. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:44:41Z), 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/DEH742413995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcee7dc6287a9ea7788b6bde5e8902a4ed7560f4ac732b4f7ddfeabe9279f53. 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/DEH742413996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cb6837c41acbc7f0df984e58709399b5bbadc0a0dbf8c104bdb07ee5a47416. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZMHK2296639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f4462135cc5f1d22aa6831344bd37e3cad6076ba57ae620cab21617af81550. 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/QZTRX2200762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773ac042188096db9413513adc292b8e53c82320859d6243b64c68b67d62847c. 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/QZTRX2200763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040b9d73ac0894b93256db1ee8873e75325602b696d4b3f3a1a2fddaa4931ba8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTRX2200765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf413c3b441eb64216f38a48652b3d78d36038b5dd775db4e348518f5bb6715cd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:51:13Z), 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/QZWDD2277486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00099db19a37b383ad40f7e76cffabe21aa0d4558a43f5e57173cfde0a26f83f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEH742332528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89da92b8b4142ceaab30532bcfa493e96abbdb6be05e7b26ccaeebaef86e2cf. 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/DEH742414001.