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 0x35cd0131f0ff74b110929820822fee75ea95a233a4ae65ec6a317733098a1bb5. 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/53ef6485-f157-4a9e-b270-8b8babb315c7.json and https://artists.proofprofile.net/proofs/artist/53ef6485-f157-4a9e-b270-8b8babb315c7.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 0x0b4f411aa123b4b131b78c9e4b1d00fa6e8f343b631cfda63351105fa5bec101. 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/QZMEM2255832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b00d87802f6b344008d36218e0888c99083811e1be66c7a2e68ffd5ff51ed9e. 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/QZMEM2255833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1a4479092f75f5aca41ab29e22a6c581da0544e92e89d5be3aca98bd26ab87. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:56:35Z), 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/QZMEM2255834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042cdff363ead7b1989ae1096e2833fdf1e9ec300c3ea202f638797b4ff64775. 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/QZMEM2255836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91167de09e2a3fa1d2c883edf8e64fafa7a9044f5c17182b7c8f69adda414a0c. 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/QZMEM2255837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ae38d9f17360ac66e2c68879be7fd9248decaff6a0e0af805d9344493f52a1. 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/QZMEM2255838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65332869f2701742ff651ba5860bfe8dfd1568e228a5f2e73adf9ef1c05c106c. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/QZMEM2255839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa373e8afb6ded5bd504be696a12157702e053fae536c6961585f51c8927cf55c. 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/QZMEM2255840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55de7b6716e55d664ca4e50c5a0684619d47341b696f1bd721f1e1047b8d3536. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/QZK6K2360592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0038cc0e589f3bf51fe01e9be975ca1f22c2882a8fffbaf477244ebb171eaa5. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNWV2386071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4a5971dd6ee837f6ab5aa3c7c8943f2e4e86ac0ec6f607e1a7ef217b90f505. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:03:10Z), 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/QZRP52392627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06791caecb566d148b75e85a14f08392ff17a061bd6b462cca15bf9f091337e1. 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/QZTB22344605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8b8a363d7ce484ccca74282aaf7f4c423b57ffceacfeb9665fa9a642617532. 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/QZWFG2340759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406fc24f9c2b931a22d5d0498eb9be0bbe9c222875d098b333a59aca5316326c. Chain 2 (Bitcoin): anchored in block 957685 (2026-07-12T09:26:00Z), 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/QZWFQ2316259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebac441a7df21b0017b938fb9fc03298fa2b6b78adb14994b133f9bd8f5011c. 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/QZWFS2408330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b1cdab5043da572d780a001f32d2358bf363979859ebde7845c8ee60e00abd. 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/QZPLR2532674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1493063a1f52602faa2df1e403256c028c8a6526ee0030697a1f8ff3ad935917. 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/QZTBA2577273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d900498f84ba291f3e1bec5563fb9314375b74c9bf5b802afbf94e73f1bcaa. 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/QZK6Q2218251.