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 0x2fea4fdce58c8583c701e76973b08fb5aa1840d9faa4418e800d346a0d3fa15c. 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/6c66ae72-9b76-4b48-8b30-e138688876fb.json and https://artists.proofprofile.net/proofs/artist/6c66ae72-9b76-4b48-8b30-e138688876fb.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 0x8c9aed5cde5d8a940768c68cd1d8f17cad81d85756dc62c604b712c16a5b1a95. 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/USYBL1500929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9724251a4acb0effd7bedd8196c701f9eb0d41cbf60d336a220db888d69a8b. 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/USYBL1500931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445c1571cf9123c2aed201aa45d137b6cb4df400436c6e4d58bba65b86a5dca5. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:27:27Z), 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/USYBL1600096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37aa30f9e4f762bc5cc183b83ceca7d40d9f06f694bef0d19992677a1b26a892. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USYBL1600105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd48814c533a8c536c63fcb16012c376087092d7e3994f126384aae8afd2bbf0. 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/USWB11602362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432506aa7be238c8daf9e8c6b5b9480ea177c118f038df488bd7b34882080347. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:51:36Z), 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/USWB11700453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e382ec015be3244027538c88fadfd91e0c3055d8d486bec369ac1a3d2098007. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USWB11802387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf029f6d60ebd029b09ae4726d81dbb6daad0fe60385e5dbfd607dfff3c619162. 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/USUM72013198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe894baa5d2d095a716d442117fe1d96b53213b7e957ee875f5a80fed8e9e98c8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM72101763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05c8fc39c5975b8c9702c0179553b7dee2f314ae03922765c0c183783a4f6e7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKPL2206185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2541217d9bb4048626a33daa0fbf72be1423a0c61da50bdbee8e5027293cb08. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKPL2210555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1debf859848bdb18e861bbf81d2d0255a21e29f71da72cb7d8a69553bf608753. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM4TW2391146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdea01583dec68b13e63112af0258c41da8009f19d7894dc46dcde7ac23b08df. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QMB622401734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62830e183cc2245b92f54852fe63eb926020bf157fff7e8359794d2cd77c6620. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMB622401701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc55cc7e93ea3af1dd512f9fa93dc46dd05d63b161a46f427aaed7f36046197. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZD442000655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f63265598d9e576ba3f16b288d33c625300dccbd1bd1030c1725c70b1eb8399. 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/US39N2200882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ee2f945fdb9251fddda39f3ae24cb93c4142a0241f54531197fd525aef11f6. 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/US39N2200891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ee2f945fdb9251fddda39f3ae24cb93c4142a0241f54531197fd525aef11f6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US39N2200891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96818b22ee227bd73a33c4293d4c311e0a2ab398a14c825e8938ea5a099959cc. 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/QMEZE1941987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96818b22ee227bd73a33c4293d4c311e0a2ab398a14c825e8938ea5a099959cc. 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/QMEZE1941987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c4f9103815916d2b022855c8b447478dc16a8b274d986f829aafaace8caf98. 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/USUG11702074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915a4a85270d85f13be79a42719fc12fbd08394b0083b270b9ef1458f90b88f8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM72108399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc811b30eb99df09c803bdfced9618c2f69b92a5765c2916c9e39399b896340. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11506931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe894baa5d2d095a716d442117fe1d96b53213b7e957ee875f5a80fed8e9e98c8. 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/USUM72101763.