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 0xc998c04c38f4b9124661791e7b637593b186087437778c5a59704cee5cde6f26. 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/958cf7cb-5cbb-4470-a0c5-8d68ec7d8e46.json and https://artists.proofprofile.net/proofs/artist/958cf7cb-5cbb-4470-a0c5-8d68ec7d8e46.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 0x827b7e8f673274facc0b022d6ab05ae8f80e485400a621ebe2c2a67b5611de4d. 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/QZDA71962239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5193ec03b0ede6e4817bbfb6e2f5d8dbe6443ae44fb74650ed31cf7a3ad79cf1. 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/QZDA71962240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4e1be7ae7a9bf70975937963f77db615b708775cfecf0e86281aa3bedd5459. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:38:17Z), 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/QZDA71962241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edf7c25803d12e528b323a62eb35135dc8aabf703054b62c59fb2e06ed6ac90. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDA71962242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f196d9549566bb16f392b06b0193359fb376f4751eeca752975a1931931f008. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZDA71962244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcc8058fe02a65b4f2745a77f275d5b3c4bfb211e978d4167c98f20c60e4e80. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:40:12Z), 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/QZDA71962245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5f167a8920cbc3e5223bb5de2a480212298cd234c576f98759fef321edc30d. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:59:27Z), 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/QZDA71962248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308d3c04d89db7beb1ad50efa39018f101c1751e44fefe204d14c9cb4b33fcd3. 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/QZDA71962251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dda40333044af25fe4ef2fc3aef6404b27baea6fecb945c3b60dd782f29e13. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZDA71962252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49d7aafbfb8494d11c00940a066c461ba04f72647e0e885a77c74e0f096c163. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZDA61901958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0f3f62cdbe61bbc9708c2b00e3d026b7aea04deff8c57f0c6375d86d76b10d. 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/QZDA61901959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcefb64a36bc2dd440b9dcf724833d0e07880f91c8f96fc65e26b6437d9f582. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZDA61901960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0d910fdb6ceaa32d389672f1ac160317659f87799f52ee15043203096c1483. 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/QZDA61901962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf740ccb53415e8937ee1522205415c854c98df74097c1f584c448ba4863a8c6c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCACE1575070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32251dd94afac7cf24f4e62c11408069f881504cc78ace0d2477c156e4c9ae2. 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/QZES81990997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3ce1a76edecef1c64565b113cc4455da3410b9cc20170fa7c7f87c3d2cd828. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZES81990999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd976f10bacd95697901a8f0589dbe84b8927ded1324a9f80425addcad9e3d06. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZDA41812697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e407aa733e0465acf25c5c81f42891d24d3e063694ffa2b37861b64d4456d8. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:44:12Z), 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/QZDA41812699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fd4600a4242f705185a1347f8df8ae9927c566ffbdbeb5b09fa7cb348a1630. 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/QZDA41812700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37405b70528fdda0b5c4c77970bc3e8e8e4d5906b479e5f41ab74a56f83513d6. 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/QZDA41812701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127605e797f49ef6af225336dfac874a539c92fed93d79ec1b3413a733707c63. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:09:16Z), 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/QZHN41973827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0881a6b2d041a3f54bd2b599b6a4e80a715eacac8cef38bcfdf750c064320ecb. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZNWU2075523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4dc1b7f740d443a506d1a0dd2888fb31f09c8c41901183c585cf42a0137f4d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USLZJ2299901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc801bcf924c6cad8dad3a7342a7a1262fb78bf5700bb80de7805d163f004539f. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/GBRKQ2594867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9997947b49b64ceb177c4a09795a81fedc6231679bec50914ee6db82c5c3dd97. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/PYC842507458.