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 0xc9bd9ac0510ee890aad2001ae1d038cb3f8530aa95b74b3cc6eecf544e3bd6a7. 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/e36eea4f-6027-4148-b267-85851b5fd6cb.json and https://artists.proofprofile.net/proofs/artist/e36eea4f-6027-4148-b267-85851b5fd6cb.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 0x7cf4a992a7d7c238cdde8e2076bec3af6fdaa57f6f46065fc9b9eb93755818f1. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZWDD2240140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3e7cdb199403723654f5e752c9c613cc35781b4971d305647c225d4a389a2a. 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/QZWDD2240145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2750eeb896ab1218134714409d35c0f3ca83ebed21ca73536f9fbdc005c8d8b4. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZWDD2240147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129ddaa32d9663234d23bf8d25700fe5de0265c385fe61fe4200ff9f89ccc1e7. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:00:39Z), 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/QZWDD2240148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5e7c856a797539bb80048bda94983482dc79cb9fcaf75ac5d853770f698302. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/US7VG1601429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8253a18ca2a6233b906e82b10752de6c2a6ae485ea25994c04d1a1d8e874c6a3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US7VG1601430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0538b5c72befc9a7ac5d5a3f55707a712d69bdafaac43a3ebbdc3b10b14f80. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:58:43Z), 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/US7VG1601431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a5bf1c854bcb93c395f6f8dfe29b293f3270ec9334f7144270f33bbc7da100. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:46:26Z), 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/US7VG1601432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94a2cc5413c663330cd1b14662ad8243151e809c678d3db32ea43c4a23853bc. 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/US7VG1601435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b92c90c80598b653ad837383bacc9d9f2154e59f8fd044292af2dda1512a5b. 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/US7VG1601436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d338d713b7e384779f645c74ebc0bf4a8f8ea9d880dee477751705222764d7. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:50:38Z), 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/US7VG1328900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d47bf51bd4306806dc61f3f8308875f41c50d0a2489ae83c35dd1a1d9a46086. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/US7VG1328905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5275b1a4d2926d5446ad1d55897454fe8fe9c00f15ca79a3017686dc09a5090d. 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/US7VG1328906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7033ab734a9b701760495c78ce8113d524142b906749ab3a9b6228fdda2e8a7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US7VG1328907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6538d559c803c91a49fc415c4cb3601a8dc081dcaa7b5d088693afaf1eb673b9. 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/US7VG1328908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4179fbb1a29bb7d1f531971447063d1b1cf15b2e60a119ffb37d4a60f90674. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:31:52Z), 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/US7VG1328915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf140c60a053878d34338c1b56f79c5b4788ff5f3dcc1cfada4a19cdf6a6481ed. 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/US7VG1605384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6255aa140ca6ec3621805626b8c10648bf46d81455a59ee4cc4eeeac31cdc68. 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/US7VG1605385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e2bed9922a5af8e436a21cc9cbef7b4095ae8516702962c8b999174edd7c9f. 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/US7VG1605386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ae95f84a3a8a17f1305f1d9c266cd229e57e384e27f614298639e04452a048. 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/US7VG1605387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062bb202d4f94c39439de6948fe3337a5766d085d8aa701d23cc46539964250f. 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/US7VG1605388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7ac72294968093cd59aeec6fae9bb6c4d204e583ab28e7bb51fd50b84b9915. 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/US7VG1605389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8439b8678f03f5a603564fa44b6c54ff50360c412269eb8f27e269a356f97a36. 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/US7VG1605390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556978898a8b39f489ee620dff20ad5a90dc0b1d0342954d280bb628460ce7f3. 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/US7VG1605391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7281192e1cb523b41a1ed3c4ac653d7f5c706548a646ec3b89dd4f3277075dc4. 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/US7VG1605392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3a53bc7726d311e289a7fb0527e0f0fad0c4be895af7d398ac24b936bc015a. 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/US7VG1605393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5da74064f031b3268dd2a2c79f8b8e7ae4a6eaff186729220e6acb1150447ed. 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/US7VG1605394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716bf4f3a12684e657ab034da35ba4b932e7d0de0e36558a60db8fa943cf9f8f. 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/US7VG1605395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c1db25c9df6feaed13c41f75aa447ff3aeb6565573f86414d428d67a6576e4. 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/USLZJ2220998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec92f4628778db7c84f7b41e5013f5dbdd14e42b5af0c2b6972457d516692616. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USLZJ2221004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c20dc40d6e712397b454fa4b9998dc308aeb6df06621fbf7f5229d97699750. 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/USLZJ2221015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ae107c571d3f9adebc7ef8ece3c66a8f7563c941677a8f4160e94224c92756. 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/USLZJ2221035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fddae5bc21bf572ea95b81c3cbcafe44831d064461a87ec6f5404387a46fca. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USLZJ2221038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf2cc0eecbef6a3c77ce5587c9f70e2fe2a7b4cacd841c3264bb440312d46e5. 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/ARB621700014.