thumb | right | Lucien Petit-Breton, French cyclist (born 1882) Lucien is a male given name. It is the French form of Luciano or Latin Lucianus, patronymic of Lucius. People Given name Lucien, 3r
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 0x838e50b9f75639de89edb0ed19c254ebcac4e70ba4fb5f59412b3f4627db2450. 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/72fd4f44-9f47-4785-8bd9-b2e6394d8adc.json and https://artists.proofprofile.net/proofs/artist/72fd4f44-9f47-4785-8bd9-b2e6394d8adc.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 0xf90857489d31f2bfa1db41c338f0dbb8dcf543647e60ecaeed7db2e690bcc10d. 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/BE8LH2300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067d2797243e5bc5f3352233b3b97532ff8555beb916f82682117665945194ef. 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/QZZEB2314234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f441245aa4826ab26c267e5306056dd3f7a5f16e12012146f93eca3fe244577. 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/GBKQU2434754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91887a14a0de04655ef330d6fd3cdd2be03b510d88b7c486b1948d09c387161. 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/NLT2H2400421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ffd3853755788402b989b3700911bdf3bf5ef662b4d20827be2d356976fac8. 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/GBKQU2408609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd0ae17c2af241255a4710d6390e67ab4f1627afb651118ceba59917d6e312a. 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/NLX3Y2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bcaf474bc091e356f276387f4c55a983293632de2060798670567786be4457. 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/BE8LH2300424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf33f82faa9c496583e118495b0a86d8904d212f1a78860aabd0ee4c1ada714. 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/NLT2H2300945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbc1c2458f300eed870ab35412c59207e60ac98a181909eeb7bf4a9a04f3b14. 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/NLT2H2300731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26aaf5388c67b80d02eec646756c2b3a3b7355d9aa9e0e11e7ae781b7f2b4c28. 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/CACWV2365967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc58802976c812ecf9546de16fbe6370d354e9a3227f16323a70a83f3746fff0. 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/QM7282366690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7816a960890ffb6483affb6b449b4a1e0a8c554469a50e01f4d3931ac7be5e62. 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/QM4TX2328133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6687b0b5a28f34fde5c746d9291e615e10de44b417ddab39e9e77a470aac4b. 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/DEXW62300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28a06e6d3068595e27ccdf11c9d768a93b4c319d5279c41184cb1e63738d157. 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/GBKQU2312920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb135b29f944d5f813097d12bf3f5cb3701531cae1986b3869c1517161264b8. 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/QMDA72285916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4f150dae7856235c263b771726c7f385ad09d7150bd4b26547f21ed39c9499. 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/BE8LH2200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a05d83992d8877836d78e4a8c25a5a93853a517fd597e0ce09e767dbdcc8d9. 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/DKD3Z2109452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8324d3e36867e7159f96cb23040d03c03fe2a5e4495efdc2ff425463278fbe67. 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/DELK52219025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d230788b3e688992d57cd19ed0858b0d6631e37a8abbb156bf6be32f75c0379. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRX282151186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1097b5832826bb234b673acd2a0e072d88a8c828589a54ea8b1d6c4de8762ae0. 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/FRX202112529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79743a75802a2c15205327c61164849e7865d7afd1e43e2f30fcf8eefa18562b. 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/GBLV62035222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c61f9cee8633f3dce0f7b8ff02dbb79014e6fa32fe525bdb37365d7702051f. 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/GBLV62012905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b4b46fde98ab1d8e4cd505826d7226fb0676aca4d3778223de9ca354c3ebb6. 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/GBRKQ2549727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a326b60c1b5c1ec6e2fb06499ea1b6247e95249596aa253b694443ce2c07f02. 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/GBKQU2507647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6550e4a7cec37935807675052e6b5bd33000f8728d25304bfe933f0a1bc179c3. 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/DGA0S2449594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1915b57c18c5f3f53a48d3947850ca1349a03b896fe79c7a58fae03c2899c872. 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/DGA0R2473707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb205447b743a523b33d0c3f8fc4787797c057c778d6b2de04c690223fbc7534d. 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/NLT2H2401311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ac4b7a8f5215da78109eb7b98f19e5ac5a28b4fef490c943dc54ad54dba726. 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/BE8LH2400540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c184e8229f8ba16b9f95ca3f1e0bb5d76e5207850a85b127763bba06d38ca6. 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/NLX3Y2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc144c0ed9535f95a8cbf0c32db38a1fd1d227faa51200092ebe9b5ad3acce6d7. 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/GXBDS2490280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f8f3362b145781b988283fcb49ac293f4bd2ab72f28eed19ef5251250f3d58. 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/DGA0L2469542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830839f22348d993f3476617f1f029bc368b97632358dee2b050d806f4f5c37a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZWDE2433900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eebdbc79d8d2fe3f7893bbdcc664ea7bec618b8632a70c0ed3c6783390aaae. 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/DEH742426157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632609fff5edfc00cf867926ac956d40e198e8aa0e5d6e1247bdb589d1152c76. 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/FRX872428433.