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 0x3bc915962c002c895e58e4cf6fdde3aafa2c4a240f4bd748054693be07ed9add. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7437828-5eb8-40c1-91f3-463f2058f0f0.json and https://artists.proofprofile.net/proofs/artist/d7437828-5eb8-40c1-91f3-463f2058f0f0.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 0x78287a8db99c7a6cdfa131c9cc94cd1aaab8cd4073648273d52bfda83649f1d2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHNC2454541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f19b4f5c2148cfc06a9f6c65af3e761a8fc5eb3a73e55bbc8049aea2834a533. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZPLS2455877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879cdbc15d7a89e1c95bd81fef0adfb6b937ceb64b5aab3325f3ee543cbf6ed4. 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/QZTBD2418145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba50ce422848b63e44d57aaece739a31ac63279875ecfa17c1bd5e42786efad4. 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/QZTBD2490817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d7e2596d1158aa747514167aec7ad60ebf35f1f9777e522fee9762b19352c4. 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/QT3F22441346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b030118fabad85a18d38d93bd6807bed71a11b81598fc7b9567d8560a460339. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:18:13Z), 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/QT3F22441347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe209202208675eb122a48f68dfbd0fbfdfb60bc3cc5632b1b274ec9b45ce3978. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QT3F22441348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f8251742bacfd15a89b9df9018205b5dbf4557a3a646a858e116fd0a3e6df6. 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/QT3F22441352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5295e5910d062177d58a0de49439fa07934cea048f111ed1e9f18bb6818b44ab. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QT3F22441358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0513e6bd19577becb6421203e205d98b42f79b198947ca942c9d8289a08d9b91. 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/QZDA42541127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca4dbb1f65956b16bdac109e45680baa44f0a539f46b6a89a6212bfa58e02eb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN92566511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9cdbedc2ee33682710f1c00a433b64603e6507ac792da7d1faeac6e5aa6dd9. 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/QZK6F2521949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d087e4925784cae985171876acfdf99afad030518dba4144fd4a07af6e32f05. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:23:19Z), 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/QZMEM2564901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1421ef4ead1ce6c16bfb48b0b9121f06903cc41afa73a76358a2fee021c772. 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/QZMEP2534068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2592f953d6b8bdaa598f9228bd8a1afc223017c39d07cf6d775b1567d9ee18d2. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZNWS2509331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff244f11f8539d40b11cecd688f14d94bde6657122a4c33b94c41a95ab5f427. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZRP42585543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffadad5f93f97755d59076fa4c3c0093f45f6f9e30d5e72415e85673ff91d541. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAW2581218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1856d15d05152aaae56a7b2f77b674ccd5d982b9b694f23379681cdfa320ee. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTB62599100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d40ae8652d8998e7c3c39d4dc0dc4ec7f744ed112192466d49c926ef8b2777. 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/QZZ772558132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73b8ee0ef0cb93c56aeb054bf9a6cae4679702b5f880aaac917852b163d49a2. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:33:37Z), 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/QZZ7N2515563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914f42cb1c008cf31b7df2ebe44fe847d03b2d53651552d5592b77498542a259. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZ7S2577117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ff16e66e9dbd10df6dfaab9d4c24f89011b237ef94946847d7137cfaa4e512. 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/QZES62540151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffba0e2b7184af3d76a24a7ae1dcad451fdb5e66814d5a896fda442f22f5375f. 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/QZES62540154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c55eb90378a7e48078f0e73428164c0b6810def3e6c98b43223defe18c00a6. 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/QZES62540159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dd3eb5a9121bc6c6c4b034ba75425803cb34fa9e443b0eb970ea659c415620. 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/QZES62540166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c92249306afaa2892b11f5dfb0f917c5eca5b2c75484239b9cb53f84c564938. 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/QZES62540168.