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 0x7affe6fddea6cdb16fd316968fa908a0033456398ff53f891dbebd26f9023603. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30b0bd6e-f448-4996-aacd-4f9a2dce0a87.json and https://artists.proofprofile.net/proofs/artist/30b0bd6e-f448-4996-aacd-4f9a2dce0a87.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 0x1a4c44912f28b1b4243e99beacebf4ca002e82e1c0277369ed58609e1bb760e0. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USUYG1161840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7090679bd84b09ee95d49645297d7193db2d9f5fc964595b1e30c15495a5ac. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USUYG1162239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860da3803f5b989e869d8574e5a3f15728a949cbc0c37bbd6f62e87ccd1b8ef8. 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/USUYG1162240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd22f109f0993ef683dbb976ab3cc0deaafb1e3dc46f68f193c7ddc577a07285. 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/USUYG1162245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf01c62edcdbee0a780346ab8c85d6fd1eda5a008210696fd3264c817ab1f09a. 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/USUYG1162247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb368ebc4dfa3914e6547d06e62cea6f643747a75169fa4b5efb373f81065e6. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/TCADW1886076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5018f484065275fc01148d2f29d21c9240661e1f2352df15b6f9dc9f28d5fc18. 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/TCADW1886077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e9999c93bd5180611cae029c2c4c008d56827fd5ba23e77c5cfb61387ea3e8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZHNA1902413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d52f4f9fcd57e7947584fe2565e05be307c09953959dbbb1c504acecdb76121. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAFD2059783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9002d517764e594fd15ae2b045425d8c18668d218936cab0f1e037f92a9d3a79. 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/QZFZ31949404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43886552af3495bd5ad6f185b4caac1faf9df8257651ca64c88d30638a7211ab. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAFG2088250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e9999c93bd5180611cae029c2c4c008d56827fd5ba23e77c5cfb61387ea3e8. 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/QZHNA1902413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c59bf1581ae4e2886309375d0a3d6c669bdc9891842df674143b2b14870792. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAFG2074976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e870de70c814325b16c2e3d5c23c77296bf40ffd74b2efd37532e2309aca23b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:25:39Z), 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/TCAGN2297695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79388541a75219cc8071152d32824483709687a6c250b1c4259e1e797d99d934. 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/TCAGN2299679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218cf4279152cd0e3e680bea6b5f3fcd64eaefa81ed342807c28a319722805d2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAGI2295812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa7928ba8d8d8f28eef5fa6d81caeebf6c7bfed1b0a1a0bd55a5b9bf23e10b9. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAGN2299747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c487dd6a243ddb9172769d79d4ef0b94442a5ce338248e6fd8c3a982a3d15c. 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/TCAIZ2407966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320fb16caeda4cf2df3ffeb7cc53dd1f7195474f3638470b64af92652085ea50. 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/USUYG1188724.
Ride (feat. G Yamazawa, 仙人掌 & Maya Hatch) [Band Set / Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd6e7c4be5e03bcc1536d3133c572a1b811c5d26505258c689b5fd46ac9d1ae. 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/JPJ902004840.
Ride (feat. G Yamazawa, 仙人掌 & Maya Hatch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a5ced1940f7adcd7addc950fef3211c28300a0fd847b2d782291018449e177. 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/JPJ901808530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd066869ce00803dbca7da97f7af127b8880b05a6b750c9bc6aa28989f54ce3. 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/QZHN42406873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91585e53995377275866499e2967c23b8c02b45833b38839d44efdc40428d42. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/TCADW1851491.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5982de9b10b3ab87a814cb2fb8e4089c17f1e4dd93a782102d45f13bde6327. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZWFM2426714.