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 0x28a3a8626f9a244037d731bbe3c854ee04eb7333cfe2af99350e880176fb09e0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45eba11c-b8d1-44ee-a6f6-d14af85af837.json and https://artists.proofprofile.net/proofs/artist/45eba11c-b8d1-44ee-a6f6-d14af85af837.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vintage World No. 157 - EP: Parade Des Cyclistes
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 0x524484fe819461e39f445ad9dfe131c825188ff96f5fb1d5fb61b52a80983ff1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR10S1824583.
Y'a d'la joie (Les plus grands succès de Charles Trenet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3369f2fe5611b8ca005993423558a20e31190447fb5a605f90f205b691d9cf. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRF439301910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3369f2fe5611b8ca005993423558a20e31190447fb5a605f90f205b691d9cf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:48:00Z), 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/FRF439301910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda953cef764b497c9685ec209e7b4c2f4a75e4fabaee3a490dcbb9458d9a2f8d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRF439200300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390f72f46b646bc8d5db6f1d66a176a72402711d37bd750b1dc97dcb2ce01d8f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRF439200310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966acc20fc940b1d6a6c609fc01ab747a9d6a041eb2fb02bcab8f680b4237d6b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRF439200370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490094f6c4209bbe09cf9d7d678aa8a379eb21a73bcb8acbf52194eee621f2b0. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/FRF439302170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c86574351a743ed97504a0ead2ce6ff567cb8cee4b89183591f99880df78f8c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRF439302110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35edc5bdb853e8bad02480547a1893443cd651d2eab1ee609a162f570cafbfb. 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/FR55H8600230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe508335203aae83e32566bbde31b00a9f8f67948841c4746ef7cc1df4728ac. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRF439302280.
Musette, Musette - Le P'tit Bal à Dédé Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995e40cbeb814554fd5a1e62c4b5ebd777d2a4bab3cdb570f85caa0327909ce2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR55H5400060.
André Verchuren et son accordéon (Les plus belles mélodies françaises)
André Verchuren et son orchestre - Accordéon inoubliable - Grands succès, vol. 1
The Star Of The Accordeon Andre Verchuren Vol 2
The Star Of The Accordeon Andre Verchuren Vol 1
André Verchuren - Accordéon en fête Vol.1 - Grands succès
André Verchuren - Accordéon en fête Vol.2 - Grands succès
André Verchuren et son orchestre - Accordéon inoubliable - Grands succès, vol. 2
The Very Best of Verchuren: Le dénicheur
Accordéon virtuose Vol. 1 - "Invitation au musette"
Hommage à André Verchuren, le Roi du Musette
La légende de l'accordéon - André Verchuren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83d86be2df4e9554876db90f819ca038a8a5e8ceccb734c02bee0c77b5fb767. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR4GL1074573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ff6299dbf5c5a2d63330cab8dc5aafce99d10804df1105bd229229bac6527e. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:30:50Z), 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/FR4GL1074574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e267ac5ec617c3a24d8dc4909b5f25fed04b4254e7f368dd38d183a0d9a3af4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR4GL1074580.
Accordéon en fête (Les plus grands succès de l'accordéon)
L'Essentiel d' André Verchuren (Mono Version)
Andre Verchuren and Will Glahe (Polka Dance) (Remastered 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe787946166f14ddd37fb6596fbfa1aefa32a1be0ca391dae8a22b3974b579309. 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/FRF439300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56801700824c8aa6ca09718cb559d5f918f8786574bfc226f4d43fc3446aabe1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRF439300580.
Double d'or: Le roi et la reine de l'accordéon
Les idoles de l'accordéon : André Verchuren, Vol. 16
Musette toujours: 100 chansons pour les amoureux de l'accordéon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41e2c894f1b1dfe9960921c0b2fa5abd92ac51aeae22702b85fcd24d0c5fb2a. 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/FR0W61478429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbed0f0579454f60ece7f9c73dea569623a7491d380ef21cc1f106abb47dba22. 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/FR0W61478432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d17916f71b5b5325dc94d5bb4fe15dd48fe3a46cc2b6544a194a20313feeb5. 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/FR0W61478445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb80fa9bcd216dbc3de1f1aa3f0149aeb3ada6160c84ed17098830d1e518a2a. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/FRF438901130.
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 0x4faed60771dfe1f4eb0b2fb970610fd154507491a35978b14f62dbad77fd33dd. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/FRZ066701330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eec0b4e1a6a02c063fbc3760987cdb0a1ba851bdbff49fd1828aa36aa0aec9. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FR0W61478457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba693642c660c07eea4019262f357f3e13efab0e6107455718a77231730c2ad6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR0W61478462.