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 0x009f4cf7fb52cd77d9ab1202aa9a29b918fbfdd0549feca849f73ebe74fb5faf. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3ddc4de-2256-454d-9fe5-59562e6bb3b9.json and https://artists.proofprofile.net/proofs/artist/f3ddc4de-2256-454d-9fe5-59562e6bb3b9.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 0xfd2c4f7d27666a68f877367f0a3ff5f405cabe49fc65ff7b8f3cd1a1b4e11538. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USL4R2152032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44b25b55bc0c75b1e08fd3b4d022db2083e07cb81a6e65e5a7cefdd5e09c9eb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USL4R2152038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3414e39ef7446c6a450769c75c0a390fa9859578bf822d7050e61de5ffb03c. 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/USCGH2468706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62785ee60b7405354dbee4eca928a95fed04f06dd682dff3136488595d8af7b4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USL4R2141033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da89886c9dba2c39b1eec32f9e76edc7e2a1f742c06c8eecc5909aa434c02d6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USL4R2141034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9d22d2984be5b840962f461a7838e6c924728c604b21ac3a39ffa3d86b9469. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:59:29Z), 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/USL4R2141035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8166a5048ef14286dd92a769f3f3d5b24ff548b84f2a7a235c0426bbc36e66ee. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USL4R2141037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd04545999e887c095a246c59a9bf32cb9343aab6f40d4f081d032dc3c49e515. 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/USL4R2141040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a01b0e3d56110bb624add6d0fbd1ef03bde879bd36077454d833fdc1b26beb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:29:19Z), 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/QMZW62500433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2f2a9c57ec7b97e0b6c4cb7caaf45b51750f7e6aaae3e577c7539ffd516786. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:19:38Z), 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/QMZW62500434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564d886c86604d99293f98ae6face83efcb890914c1e6121ac537eacd54910d7. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QMZW62500435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0492dd55e8f4b3539040b870766cf502c9584025f0b4b3c80b8f0e0997bb2714. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:39:39Z), 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/QMZW62500436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365d6eab82e5154151e87c8cb838a806daac64349c73a49fa82081a2b8df3ce4. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QMZW62500438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0a29d6c1453dc4214c02a0f2e668f4a0acdb973700f38f8a6121ff32a14f13. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QMZW62500439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553e278addfc0be8d9060051b55a8aa068541f3e21fea457a681de1176255ba1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMZW62500440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0019818704ae8b806940d18c6210663424a5e853d88c6c500f23311e06d8015f. 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/QMZW62500441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479b4f9615c7d2ddddb47f3891c1d14afa98a2aefe4342e6905a5510fb5c3baa. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QMZW62500442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f2461dadc303be6fed7d07773d05d87922008fe4d789481e408cc86f600651. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QMZW62500443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c343cdf203805fa2df03151bc1c6d4c326724dec2df7a0d73066b9b822c8a5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:02Z), 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/QMZW62500445.