thumb|Paul Gavarni, , 1842 () is a type of urban male "stroller", "lounger", "saunterer", or "loafer". This French term was popularized in the 19th century and has some nuanced additional meanings (
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 0x904ebf330ddc7dd95a52fc8cd8e011ec290e725a6d654f8ff3120717a1c25881. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5297792-c546-4e79-bd35-ea5b3f722305.json and https://artists.proofprofile.net/proofs/artist/f5297792-c546-4e79-bd35-ea5b3f722305.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 0x68e1bde11d4e244cc0a9bae3cecdc6e82508312e751f233b45f811dbb17f4dcf. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZFZ72155649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6a38ad8335f21bd2878583c7a254f96bc77e166ff5a2d97ab2b8a2babd1685. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM3DF2102721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd3fe0acee60ab1dcdd11eaca2f453f4c52ab9e4e00ce0b680f08c28faae658. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CH7812219806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0307015d02005a00115ce2fc09aed3d9f63e29175c6c3f5b9cf8ab9b3f1b38. 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/DEH742407073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f262d1c542ff621908d883125657b266c7a45542d112dccffa99a7a17381565. 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/DEH742410292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315e93e563c02e3b32d62a3f6547007bd388583ea3ee466c4a6d7b973f201156. 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/US3DF2431520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc749e32bcedc48b8d8d61380a063a34f16bc12cc0b21b50bd0eec3a6142216be. 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/DEH742424123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f89509c9efbaf3dd8a1a1f1a2f7c07af9593e037a47dc14918712f80cafa15. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEH742435071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f89509c9efbaf3dd8a1a1f1a2f7c07af9593e037a47dc14918712f80cafa15. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DEH742435071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1982d874e322743621dbb0568ed13e5529105665da8982ad4b68281e2e8e10. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USANG2473738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35837da9ad06b6fb5e29155edd25df2abcf81f5521f5f29f5c446126a6857bf4. 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/UKZGC2307370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9505b23f56db42ecfc753cc5cd36e5aebf42ec077ea559711ef4bf041755755b. 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/UKZGC2401956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9361371ef5d1020d63b361b7814a9c57aeb9b9c410cf67c04b2dd9466abc807c. 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/DEH742431749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d61bc70f98592edad777a7bc92ffce5d18c46458d3a7b5a59946fca7ffc4709. 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/UKZGC2407664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f999b812cc07b1324ed9241dc2f089ec6d2d15c3957e22f8d2607830253f1fd. 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/UKZGC2408352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fea47fb27dc36976170f4672369d5a664760f6070bfc2210e5749d32603de62. 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/DEH742411649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c5a4336ed73f0dcd77a16fe219519877f264a91cee5100a65b942bf88fbfbd. 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/UKZGC2305329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f156ac6487c8d9dab675978f268eaf596b980b261f4731bc36cbf1d05a51d2. 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/UKZGC2305336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557a6fd4158781d1d8786d26a7314748558939270109a4620e848070f5a7f910. 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/GBKQU2278942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f12e0f9bac14ae8d1e2a4e404432892df1fdebc02246a43959b7bd81a4cd8cd. 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/US3DF2414492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6460084a225430d826b99891223d7dd4734df4ffa1d9fe8ac213d0ded8cf8f7. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/US3DF2447702.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ed04d7e59e110b0639215efa57cb90fe4ca0a56e5f6d2bb3627a1412282af3. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US3DF2486860.