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 0x914dc027f1a8a22489117a2c8384a57e889df7269dafd186782211f197219c24. 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/96a8adf2-fadf-4289-a6b3-061a9c90c5df.json and https://artists.proofprofile.net/proofs/artist/96a8adf2-fadf-4289-a6b3-061a9c90c5df.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 0x59a1ee4958f61bdf916566e032de2d62ac59d600ac0af0e5f8338215838f098f. 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/USRC12302021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376fc02b79cc54f6349d4e59ed902863e3ba29cbc2e97a8ef874db52ed756e95. 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/USRC12002202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45838b74830da118d45b10d667820c241ba7e6fa929984b9eb0ce594028c8867. 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/USRC12003789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483d210a6733959c8f059025ebc965dcdc2cd53f1a9a2ef9e1e806b654672005. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USRC12101850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8225629508009ea9647ea51dd86450625df29be3f79119c26913b64714f2d21. 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/USRC12101851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bee5899adb88a56fc3f6f93264ee06ac10bb7c71ed3d7ce02e5e4e78aa2694a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC12003790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51a991fc6066531368bdf53ac10405065a6a1eb3a8594181be225598149dc8a. 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/USRC12101852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92df6da02b819a84f85d4abc7eab2fb8575f419ab3f3b61f916c7b061643165d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USRC12200321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6419c95be50db1d879dfa966401d3c6ce0e3b87d094dde88f5a2b73aad2304d4. 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/USRC12200340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a140e9908e2fba5392f401ec29632ceb4216f762d779f904155634a523c8b0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USRC12200341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034c59bab33dbd1f4e784bc80f922f78da76bd4e284bd4f32fb653ac03ec4214. 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/USRC12201191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6c967b25ec9782bf7f494260e73097f154fafb24245fcb5740d1cb88ba1cc9. 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/USRC12201192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60ed2b7f892a32ce53f5ee87e2b6caecfcde63b31d14891ff125844c67653ac. 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/USRC12100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6707829ee6fd84cc06f5eb2ed0bb0ed9db978f8a25707f7180ca93be7f75801. 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/USRC12003415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1c856da854223343d3ac120fbf1c1f6257cb2788b1976852c67734ce759b31. 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/USRC12301494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25212872e2c7ae4554598e56333a6c5ddf49408862d534e12df27d35adf1e37e. 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/USRC12302020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6419c95be50db1d879dfa966401d3c6ce0e3b87d094dde88f5a2b73aad2304d4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:43:16Z), 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/USRC12200340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21dbb8d1518e02fa969c3dd2dcf83d415f63be6c3bab23fdad3319ff141f782. 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/USRC12200674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92df6da02b819a84f85d4abc7eab2fb8575f419ab3f3b61f916c7b061643165d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USRC12200321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376fc02b79cc54f6349d4e59ed902863e3ba29cbc2e97a8ef874db52ed756e95. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USRC12002202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45838b74830da118d45b10d667820c241ba7e6fa929984b9eb0ce594028c8867. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USRC12003789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483d210a6733959c8f059025ebc965dcdc2cd53f1a9a2ef9e1e806b654672005. 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/USRC12101850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8225629508009ea9647ea51dd86450625df29be3f79119c26913b64714f2d21. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USRC12101851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bee5899adb88a56fc3f6f93264ee06ac10bb7c71ed3d7ce02e5e4e78aa2694a. 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/USRC12003790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51a991fc6066531368bdf53ac10405065a6a1eb3a8594181be225598149dc8a. 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/USRC12101852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bee5899adb88a56fc3f6f93264ee06ac10bb7c71ed3d7ce02e5e4e78aa2694a. 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/USRC12003790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45838b74830da118d45b10d667820c241ba7e6fa929984b9eb0ce594028c8867. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USRC12003789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376fc02b79cc54f6349d4e59ed902863e3ba29cbc2e97a8ef874db52ed756e95. 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/USRC12002202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60ed2b7f892a32ce53f5ee87e2b6caecfcde63b31d14891ff125844c67653ac. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USRC12100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6707829ee6fd84cc06f5eb2ed0bb0ed9db978f8a25707f7180ca93be7f75801. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USRC12003415.