1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf31bf6fc80d75359876d95961f413ec63f3f434769bf90c8de9e2b1e3fc8bb2a. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b9b0457-beae-424e-bbff-68840f92c0c3.json and https://artists.proofprofile.net/proofs/artist/9b9b0457-beae-424e-bbff-68840f92c0c3.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 → block OTSBitcoinBlock must exist at that height 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 0x42c39f1042463b3bb52106d483c94b09700e8e8692157ee377e8e6ded622011d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRZ511000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e3a7d436377d7289f25e5ac3b46b2946d39195e39dbf169270e0766f6b8772. 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/FRZ510900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b39855f9f44f11a5d99ea85bf1c2df375ab71c92fb4041c7f17447a3fd05cd1. 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/FRZ510900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210660ab38903183789b8a792396fe252c56cb02381334bdd9148fcb09fb2b5d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRZ510700273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcaf2e91cf2eea068419bd44ff5608c53777af573aa9596ff059e709479a2d5. 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/FRZ510700277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41377eb8e10f04ae7a140d61b73fc97e111bf6272f970f1741198160eb963fa. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRZ510500018.
Hymnes et chants des supporters du XV de France - Sélection Officielle Rugby 2011
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30c98b1764c44ae9561aad2f8567bec987dc5996a0905dcdb1148755c6dd839. 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/FRZ518900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fa1ade63e3a51d3f60da1e0bd826e4e94a19a7603f73eb5691595ee5cd6d56. 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/FRZ510000430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a22df923796c7b35d04d5310d50f8817122e58f97c69d06fac13ea245af1a33. 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/FRZ510500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa494b22cb17983ae8776cc6fb542446e3848e66fd6817db28d37f461fbd406db. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRZ519900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b263dc0a6f11ae8950a750b25fec83b9ee0fcd3b6158576842b809835f4020e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRZ519800113.
Aupa Pilota - XVIèmes Championnats du Monde de Pelote Basque
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce45dc9d3b1bed98eca2235fbd733c57681cee83451552ad93861c3371d28955. 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/FRZ511000306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2956bcaa1b1616a3581f31a1fe90976466a1fd55cfa45a37b7b4c65e7b79040. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRZ511000307.
Les Bleus Supporters Anthems & Chants - The Official Selection - Rugby 2011