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 0x71e451511797c8f0e8b64b99ef1ad4c2439433597a46ee585a196af99d622f20. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cecca2cf-61ac-4e06-b8d6-742cbbdf1787.json and https://artists.proofprofile.net/proofs/artist/cecca2cf-61ac-4e06-b8d6-742cbbdf1787.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 0xcd3112b6f79615d977e0c641b5a6169dc7c8f9c29c04dcd52c22a62b7ab0c5d3. 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/FR35T2100025.
Le temps de vivre (Hommage à Georges Moustaki)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b070be25deaee17b7462f566fd6c0bc2a3c2981e5e2bc8b724dd9c06a0d6ab. 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/FR35T2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85ae35d75f97b5a83453ca51d62e7e5d0c8cd1e94b1f22dd3eb46499153fc86. 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/FR35T2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1549c0f2a6016b924b985effba8487e23d5e247664c639d1967555a1d78218bd. 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/FR35T2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dfdbe84f63ef72ff89330e9e0616076dc1290b710a5e9beea6c429fefdf166. 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/FR35T2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58150ba0e4c8033119b3f712c7dd389a4aad7298f1a937fb9042b4c6ce1877d. 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/FR35T2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed65cc8d360c2814254ab1b18e42eb8e17c63f175599f635ea43a731fef12f2b. 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/FR35T2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184cfa5abfda4d760aaf0064e6faeff3c702e805348f7f070d64da06937f4d8d. 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/FR35T2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a124b012d5528460ccd37fdcb82cf9c552003713444920d232c518b49daceb. 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/FR35T2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3112b6f79615d977e0c641b5a6169dc7c8f9c29c04dcd52c22a62b7ab0c5d3. 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/FR35T2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33b11b609810af7aa272c06b1d41b80dffb3dd03d7089047553f1286c34adb5. 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/FR35T2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4baad9880156f99ea71ba1b9e6604b8560252840b1ea6744d55659f27cdfa2. 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/FR35T1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d809732666327d4c49dd777a053faa7ac1f37a751629311e5a588571e07e8e7. 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/FR35T1900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea6af9b268e12880dfd7c02d1f0672c0fe13e9413a5737ca1bedc4eaf0bb937. 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/FR35T1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1629985a7bf9d74170bd7da8134ab5f266092370f9cce2d8ebea2408968abd. 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/FR35T1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf9c0dd4e3c4622efc3c35ae262ef888a7aebf94225da7db2c1183a18aefeb8. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR9W11500497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c357c45cee1a549cb8aff87fdccc3e112219b8d276e9282e124facde4d05cc. 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/FR9W11500499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f1ea9eec6bbbeebd0436a492ec77ec6c89643c2b58ea17628aac9328cc0374. 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/FRUM71302350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eea76fa227c66bd415123bc9d52ce5cf48fca9bf9b0c0e2a62e73041d47c392. 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/FRUM71001306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68947f8e7b4e0211bfeabac073542074ac53a3a74ab6a42368fe283ad43703aa. 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/FRUM71001307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2dd051464a50755227c6eb5f60e455e203652203ec04d6b431704679d7bfe3. 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/FRUM71001308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef12be370dee93077e907408df89611d9b2b99a67fca07966943d8166fc30273. 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/FRUM71001315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146a1f1f89323512ac8a5354abcb5efac907c916a76676d5c7302e539645dbba. 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/FRUM70700673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e5a0fd3154e2494e33d6cfdc0de773c7bfa97c416ca6ddadad5535f8ca000e. 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/FRUM72301667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85ae35d75f97b5a83453ca51d62e7e5d0c8cd1e94b1f22dd3eb46499153fc86. 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/FR35T2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed65cc8d360c2814254ab1b18e42eb8e17c63f175599f635ea43a731fef12f2b. 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/FR35T2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f546fcc7cafaf3d2894141c063718c3746af3fbed8047cc9d78a44700c3d160. 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/FR35T2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68947f8e7b4e0211bfeabac073542074ac53a3a74ab6a42368fe283ad43703aa. 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/FRUM71001307.