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 0xe9dcead507d5de8762c5fc0f330c3a2eb3a152428a0bd4d26948b4c1f8d0e1ea. 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/019b45cd-f0ca-49d8-bd1a-836d901b8176.json and https://artists.proofprofile.net/proofs/artist/019b45cd-f0ca-49d8-bd1a-836d901b8176.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 0x0a2917b40cc072930e3ccd22656dbbc4c34faf7d22db7c2ff4d468eac1280a02. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZZ792415496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c8b6a7d2902740bfb101274ab255eb199c5b1ad9aa81b36abb6acfcbebc624. 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/QZZ7P2405843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453596174c155de5d3584802fa25b6b930d5f036beb6b04213228f5bb36aab09. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZZ7P2408163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403897556b61aa71be730d4b0311f299239a6056e0c5678904208324aef169d8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:03Z), 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/QZZ7S2445169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f850bab07fe830b3f6c0ae6702ddc032a6919a8c60ef5e0cd1e7ff1bb17138. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:40Z), 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/QZZ7S2443334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02aaa265f6c6f838e1cc52e7d4756153e7f12fd9c64d2147a65a5eaea4ad655. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZZ7T2456458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa665216210d0ca3c8ce06e21f93772e2c6c8470c5e167b8ce98ff9233b2e0b46. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZZ7V2412611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc3ddff625d559f1eeeb7f7c760166a330f72922934016c49218b09df68ccf2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ7V2415052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05e9e632413547f6cabd88eceff9adf3c38d19adb2cbb38babec4026ad8dfab. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFYX2587586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9186f64295aeaf8e6214f9e06cb404bd89b430c40af679ff0c0556b4406c8369. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:25:37Z), 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/QZFYY2529562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217eb8af2cd0aceeb55f24a60ba4e2290706f19b16bc1f52ee488c7f8ae6ca78. 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/QZFYY2527676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ced2ef8a2f6fabe4c58cd4f915768b963ed3d92786e1c7daa0e5eaa4b7c2f4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZFYX2587593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bdd833c6ed58746494de9a150d0da138d25ec539e5897834c9ec73c55be33b. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZDA42567657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bcf2a135a1ec00dc2e674bde84b23cb5606de8b77c64536503b43895d9b092. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZDA42562208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03705f16e52c9a87159ae23928256603ae72eae0989c90766bbd87b7007bcab7. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:28:45Z), 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/QZDA42560483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57a1e3c38fb54155a2edf8f8a8fd2410229e6914b0f05b3426c64b241a97975. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZDA42562214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe181a8b3a68708a08ab7f0afb3c6c8f52238271de689c3fd0c84ba507dc826f2. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZDA62536896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31e8be6199fafa1c42d1b4fc050c7ca29cf19cd8f7662dfd3fb665a719b4d4b. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZDA62540109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb03e774c9423636c681f68a3885012f70833971822915700636b1b69e663798. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZDA62540111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551de86f29e1da25aa0e36602fac3ecd5947299a2ed874101ab288ebd93f94b6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:11Z), 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/QZDA62540105.