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 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 0xba54816e90c02534f2e5a708ab17d864d3bb388eb935c16227b8b23ae6d8d907. 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/33744f0c-01c1-4a6a-b778-cf7148fdf6f8.json and https://artists.proofprofile.net/proofs/artist/33744f0c-01c1-4a6a-b778-cf7148fdf6f8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Autour du Monde | Le Tour du Monde #2 Amsterdam
Leather Jacket | Le Tour du Monde #3 Berlin
Blue River | Le Tour du Monde #4 Budapest
Messy Hair | Le Tour du Monde #5 Istanbul
Sailor Man | Le Tour Du Monde #7 Koh Phi Phi
Lost in Translation: Le Tour Du Monde #9 Tokyo
Back In Time: Le Tour Du Monde #10 Tulum
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 0x59ff0c8cba2e2a52da0e6c00efdf027c0e79730544256d251490e5248b07ff46. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXDFR1500004 — a six-check JSON result.
Autour Du Monde - Le Tour Du Monde - Amsterdam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93ee1f08988f50476c2264fc8a028faf7638f70f0a7862698429bab33cde00f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXDFR1500011 — a six-check JSON result.
Leather Jacket - Le Tour Du Monde - Berlin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d2293007aeacac9f7fc12d64f1e7fb541338a890c510fbb8eb710fd6bf7c6f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXDFR1500012 — a six-check JSON result.
Blue River - Le Tour Du Monde - Budapest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88d5e71add18518348fb7255726e997b4bcde4a6e58f1e72c27ecc75099b4b4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXDFR1500015 — a six-check JSON result.
Messy Hair - Le Tour Du Monde - Istanbul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c60a769db45f0b17c8e41149183b54c3c8bc50f4ee511f159bf4b7518ece74. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXDFR1500017 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63b798f1c4334b625f0f27b1619901886e00e39757a88b8e885565255e6ac26. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXDFR1500019 — a six-check JSON result.
Sailor Man - Le Tour Du Monde - Koh Phi Phi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fe86e7272f2a70ac207a7ce87b176f5caf98de76e6111818d94f905dadee21. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXDFR1500024 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43b46fd16dfdaa4b5886d2d5d035983a67a7121af6d95f039eb60928d2ebc3a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACF1596347 — a six-check JSON result.
Like Giants in The Sky (Le Tour Du Monde - Austin)
Le tour du monde & Around the World in 80 Music Videos
Where The Wind Blows (Le Tour Du Monde - Chicago)
A Bird With No Feet (Le Tour Du Monde - Dublin)
Onde a Gente Nunca Foi: Som das Estradas - Centro-Oeste
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2510d15ba52a90d92eb74c41a66a9ea13b1b31889846e978efa1c8112720062. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXDRF1900035 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7a5b9add3c08ac2405d577155d72686e2b44bd1efe776745e0b474522e8ea2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXDFR1900051 — a six-check JSON result.
Te Vejo em Dezembro: Som das Estradas - Sudeste
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d69900b544982e0e21f620e111c95da4131ff918aa0342f1e653e33d387c6df. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXDFR1900023 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c982f57746f615c7629e5a3f936885600f50fcfb2d6771fc9570b9e143a004. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXDFR1900027 — a six-check JSON result.
Johnny Malibu (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b1e0e114f157a978400c4f6bf9605f7af6e51c662333e74d6a153092b9c1ac. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXDFR1700051 — a six-check JSON result.