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 0x41ac9d4bffa2aa1c9427a603ad73709a9fc17e8c3719c2dd49bf6dd9d080ff6a. 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/8fd3de3f-c7cc-41f2-b020-f0fc5e225df7.json and https://artists.proofprofile.net/proofs/artist/8fd3de3f-c7cc-41f2-b020-f0fc5e225df7.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 0xf2c1bf4e45c843cfd1ca83ac42f6a84cb7bc8af07231ef865829341c40cb1c47. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:00:15Z), 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/QZTBE2311308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6308dae3e0d75c189b4bc80194a74ca2e066505558edb6a5f388c42e6fce8fe6. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZWFE2329570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70e8b79d6acfd6216b87ec134070dbfbb1e6a12d4e501f564f314aaf2241add. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZWFE2301727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e2bda4b147ad9ff97e2ace9352a9a883dd87e7131fa243cd86d03c571709c3. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:23:39Z), 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/QZWFL2350840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9419f63d5ff6b1cf489ae49094d5d14467281f3efb42ea338d08c02e7b3faddd. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZWFM2333878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cdf702f34b00559ae272ea23711e34d6730d1ef3dd0cbeb8a7a763232d61f8. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:14Z), 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/QZWFP2370096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cdf702f34b00559ae272ea23711e34d6730d1ef3dd0cbeb8a7a763232d61f8. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZWFP2370096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d80fa625313f57f970ba14e612acaf7f775e2a05ee2c9d54ff13924e3d3a9b8. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:43:21Z), 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/QZWFR2342483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d80fa625313f57f970ba14e612acaf7f775e2a05ee2c9d54ff13924e3d3a9b8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZWFR2342483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f881d1e3e9b74550e6bfb5fb2fa5615aa79636cc9e89ca3e6bd434c373f437. 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/QZFZ32492614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b142ed0007d0d7d981cd2024b6c4cf1e3ebd04a0891f05a7f499a0870d4e86. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZHN92453671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4be51a60c210c0ed7ce2a7670dad77b24dfb48626d3394d5e61fa594ff2c579. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZK6N2478273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a824c3a58c1de4acc22914b6868c0f98da3b5929b95de75fea16a6b7bdf149. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZMEM2487368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1359f1a2157a077ca100f79f166af086d8e32edfa8ef7ac8ddf16a566cb754. 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/QZNWT2406999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0237bc92ef9bb642d6e663a7de24f705a9225304e875250aa048f840cdb908db. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTBB2412240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9838d463448c06cf9490d3d1d7165b19830605260741b65072425d5a1056113. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZZ782448388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca62a7445665afb22d1444503a05e75158a3fb4a2902dce98912a482baa3848. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWFX2415184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d4e367e2949b751eb66c78282b349cc0620f4a879353ba0d11f1888e944a2c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:12:13Z), 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/DGA0E2411311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff7e1daf965ff8f4118411df69833ff5644da2cd78302ce4c36ec82220c828d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CAENV2580328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2138ef760d1ab2ae1fd38e6a474a99f56d4e3197469d17a6ce64e90bd08d8776. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/CAENV2593770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966da3c12c2d8a946300065d221bec550e64c8d0b6a5f888d6888e3fffc9c1da. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:17:42Z), 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/CBEYJ2515174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d22ba8a607fd6c7728ebcfeb24af1328c387c9dbff922a578d6633c3ded1157. 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/PLC062438796.