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 0x2c41de7a1c2f35c60b4b6511ef1dbaa6b57235737a283ccdd94f33e25339347c. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04353b5e-c930-4937-b27d-c811a54f86b2.json and https://artists.proofprofile.net/proofs/artist/04353b5e-c930-4937-b27d-c811a54f86b2.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 0x8c718ca542ddad0fa32d821143eb748c4f79edb6bdba059966f8077e69cc4228. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:06:47Z), 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/QT3EX2584571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d97b4a3e29866cfc2cba17114fb2cfeaa6553988792ed86cff6a9e7d85530b4. 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/QT3EX2584545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95914e684f1aa4edc66f0f006065abb7ae00b9fb1e1e48b6c6a36a9c00c527c6. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:42Z), 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/QT3EY2591433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334a7bb03cd1e8888de450029aede962121b21eeb4cbda9662e2a0fe6da9c507. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QT3EY2585311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7a5d4bcac34c5c2c91965c369a1d1d279298d3c4335036560a2f325ac55864. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT3EY2585313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d38b6d9863dd54d2882088069f9b7f2ffbbac71ed25b5ce9db04d0a75f2a72. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3EY2585322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0100a9f78c29f4b47dbfe503d741415a2c2a4f6384c56468627ee9004fde55f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3EZ2585521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1760acb1d90f1bc619d7ddef6df68f2b4f4b8ce67100a94441ca52c1b4f6645c. 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/QT3EZ2585407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1193cd4ea88b9e9042ccb05734ed34a39b812c19283d65f9aaad2f87a35984d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:46:28Z), 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/QT3EZ2583286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7c41b27a11ba9e55e224678ae9719b9ae2fc895be8d8b09d9bf6c658897bc7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3EZ2585461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623efdfa991247f300f5b3e2d5e29dfaebcefb1df512320a2e7f0f8e889183e5. 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/QT3F32573051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaed9de10222d4754fc5a234b43d43705f86d0fdc8e40e888cf3684fff7d6c1c. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QT3F32570527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9e4ee9189ee71352eba3945533226703eb78b79321dca3a53e3b26b2ef2c70. 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/QT3F42511010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc68bf72184519fae080d36ebafd785a0c19308c5368aa3ea025d2521e92e7eb. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:32:26Z), 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/QT3F42513894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4905090c1c3fbbbd63d302cad73dc044d8e2ca12380d3a297367c2649ac611f7. 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/QT3F42513901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb19ab1e6e3a629cec8e6f93327f9a0fae8b4356c19561e02645ae14408b661c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT6E62503282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad14b4c917627b20bc39437882edb38342868f458d547b3600e585a49e88f83. 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/QT6E52597552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29a0f10c182e2c9f83c0be5cc1b738469864485cdb4b6c8d2c1e963af7d12e0. 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/QT6E62503323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262e2042d9328ff79722137600914274d357328dce1490955edb83738b37f143. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QT6EA2504094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f228eb6df187249da51d6d110c52f68243b7adeb2503ec812c451f72c86b15. 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/QT6EA2504102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa026d9b84c349e90e2e58d2ecf0be1ce8f4cc94180aec02645a3f6dc4b436911. 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/QT6EA2501080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e37ea178e687298b3a3e625a731330b65b8b78a9f031218a64690201635cc53. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QT6E92597616.