1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd78bf62e4b522192e70fd78eb779d44415fc22b61af5963fbb3e1eb2be00dd3c. 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/0c78f6b5-4862-4c63-ab2c-c526c1a43a2e.json and https://artists.proofprofile.net/proofs/artist/0c78f6b5-4862-4c63-ab2c-c526c1a43a2e.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 → block OTSBitcoinBlock must exist at that height 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 0xcf9ce6624b9afd981c2b55afec66ab92accd5415e6084ed98dcb443f30e6b8a0. 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/QZK6H2127006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc959c249b62e70a68ca252f45fed68ba0910d5540ac9fabab2ca555147c7010. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZES82261502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ac0e3542b4bc9c55224b747a66f77207de54ab53224a35e6743e3f78266203. 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/QZDA62201076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffeb0ff5affb96490a152c93c10f45ac4bd5a5530e8208dccb96f2880d5e6ea. 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/QZMEM2070195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efb9038adf232ce65809a23da42cb72ddda25dd3ed1435ee79ec5306717681c. 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/QZMEQ2261044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3091afa9ee471bd6531eb4ea9c8c17a3fb1afc0c0ca2d59f06532d17ed75472. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN52327225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7ca6a24a5048d86c642e706239be00687dffa2144bda8cbba6b8ecb99d5e37. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:54:58Z), 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/QZK6P2374212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07230f873c766ec400ece623bee2ea5b03a793382cba1669a5325a5c0d2bced2. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZMEM2309528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc6ec430bfda6a43a6aa5f3851520c4f6d6554d0700d6f00fc8ec6f752acd2e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZWFE2339708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c18d4874712130f702e76787c79587bcea5647841d5387bad7da04fafa8fd8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA72432680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc6ec430bfda6a43a6aa5f3851520c4f6d6554d0700d6f00fc8ec6f752acd2e. 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/QZWFE2339708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94090aaf2443db6e6b06c8e279218d9a49019cc45ec14c0577da91c52db2c82. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZHN42422121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cb04f89da1aad0de910463e55bb1e930dedb97e76b7b71c69387eac208ade9. 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/QZMEM2495337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75079b133be0f37241524f1112db95a66f64e3f3dc1f4b267889ca345624c6c3. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:56:30Z), 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/QZWFL2440167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7099947dcff7a56ec5b91b358cea28659e105ddb27c70493ea00047ebf9e09. 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/QZZ7R2411562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63536809756ea99926460cda2f13159f01751ac877c4a7a388ee2c2a0f379f92. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZDA52509205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7099947dcff7a56ec5b91b358cea28659e105ddb27c70493ea00047ebf9e09. 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/QZZ7R2411562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1fffc036382b4997e1313d899aabf54a5edf19762b465027d4c86587fd19c5. 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/QZK6F2574270.