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 0x473d421119a48932ecec2de179946b8379e59b700b8c099b80099aa54f4325e6. 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/16e38070-f896-4385-97ef-17e88411d6f0.json and https://artists.proofprofile.net/proofs/artist/16e38070-f896-4385-97ef-17e88411d6f0.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 0xf808febaacde9867d89f9c2ba6b86b25a6c5e841a98fd05d8cb9bcd9711f0d3d. 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/QZHN92341715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1891679b22ac71458391c965b097f858df2ce4125651976d8bdb154a8a22d65f. 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/QZHN92341716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2569f89afd617aba8adb98282ca5545218d42a8fd518046c19242b2f1ed35d25. 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/QZHN92341717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa054c8cbeb7bc562d0bfa25c73cfa6f922b3ded6b1e77a4cf3cacaed9e7df6. 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/QZHN92341718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3e3477acebf584c4319b48b4d090013954f8b7fd78b3f037bdb8656e611165. 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/QZHN92341719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe087aef63c1cafa525e03beb7ae9b3702d47d10ed77e08922e870e87061e3cac. 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/QZHN92341720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd396ebb663cafe6d18b07655d782aafb89796e588e0070b2a2053a600427e9d6. 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/QZHN92341721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02d8eeb351bac5bb4116bb13860fcc6aeea68d93b132ea803e04be4f74bd41c. 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/QZK6G2236378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a76473c223a49f49a0dff20902cc100980447b450399e90ade9058a504db9f3. 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/QZHN92341722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd831c878d6d9a50e09cc1b619ab206a7bfc7d4fdfc09f65ca0e5b169b96ef354. 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/QZHN92341723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b95b9f59562a9b7b0b6cf4342b4c5a5406684214b237eac409c02b6515bed6f. 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/QZHN92341724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c2b69ac4d898fd9c3f716fb5a3c65b13576bc64d264f3b462bf75917623bbf. 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/QZHN92341725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272bbafb9c4f0a1faa621b2edb19b2315fe30ef787a92434e13342fd499ab2c2. 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/FR10S2483071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414c786f5a3f5c47c23da0575332854f25bd9bbec89f81f44ed273d7031ddcb1. 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/FR10S2483072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759c0d41daabbec68d29f8765526ef961f049eba076705613d48d9fa0a476846. 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/FR10S2483073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817fb551a2767f418b809508970711e4e8ee0e1173e29c46f49694afbaf59bc6. 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/FR10S2483074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb4cf4bd7e5fa70826aeaa58bdcd7e2b0004140b74f6c6b057e22a2aee96202. 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/FRX872304533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bc59aa6886b31b0e39ffdb5c0ac7e1e3943e92c0b0e3e58989d0200696c3df. 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/FR10S2483075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b847a489dd6bcb045f430529c06454ec46b2e90510b969a98c4d857236621a0. 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/FR10S2483076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfe18c0f31cee5eb5d2dcbf7ecb76a1c95ccd5cf310cea9bdb007051dbff1c9. 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/FR10S2483077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d82b0e9dfa29c36e4a3f60b942a035c6c754fa22e3b64e3e1b3e42f93692974. 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/FR10S2483078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c9958e254e49df89269b66858669d05db5369bc0001ffb7ab7866ba929829b. 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/FR10S2483079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bacaf6e790cbb9a5333e53791a59d0b97c1f4e5313fa01b0d0b0a797c4ae893. 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/FR10S2483080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c9958e254e49df89269b66858669d05db5369bc0001ffb7ab7866ba929829b. 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/FR10S2483079.