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 0xfc06671bb46c65a85c959f1958ff4efbe0629c92ec9d94ec2e1841a1693f9d00. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2357aaf7-ec58-4117-8e87-45898e35e0a4.json and https://artists.proofprofile.net/proofs/artist/2357aaf7-ec58-4117-8e87-45898e35e0a4.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 0x089c24bc2f132e3ed7ff41dd502bedc6c48463362acb791b531ea481de7a2533. 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/FRZ177300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba642c998244ff47a36e531cc7287c63c46aae43cf1e1a0f18b7af127968cd7b. 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/FRZ178102010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c6137007d6f766ce0a6a0a3d3833262d8d6848df6431cafc9a48d84c1ae04b. 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/FRZ177800580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72eabc73eb62baefd7c43fa885a8c9105e3b3dd86e8cb7dfec672bcf08010a61. 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/FRZ177700891.
Noëls de Notre-Dame-des-Doms: Lou paure satan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd4fd0f21c7f6d8691b55756c0cf05c61fc99fcbf361bb32813926eb515da7f. 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/FRZ177500230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64010e6cd4579b48c33d2a65315cc0b7e1a30c5976e67d3cd012be16f68b6a6e. 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/FRZ178102060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2180c0cd8bfe14ed00ddf7dcb95fdc424214723f5dd348a244f2e8a5ff7c8689. 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/FRZ177700910.
Trois chansons pieuses provençales: Sant alessi Santo Margarido La passien de Jesus Christ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb15252e3c32e451f2bea7b0823e530eee4dc0f76907c80b005b8e65e90fdd5. 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/FRZ178102100.
Les Musiciens de Provence : Musique des trouvères et des troubadours
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe481f572a499310309345a871fbbe5f089eb6a89c73a74a67dbf2f0123766b72. 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/FRZ177500180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb242c5e6d7a1057b3feb40905aead2d8edc9ef3f5d320efa4ba3304ae87bca. 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/FRZ177500190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5c2b53e8106fc47946c2423d4e9fa9a6ac7826d307c4eb32ed22e6a675d6a1. 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/FRZ177500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4914473884d861ac10de659da44d85357ba10fe3c60ae79e04df4c3db2f1bfb. 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/FRZ177800520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d81d3c77f226240c01a6d45956d761c2800712cf3d7cb1656753899594c8d8. 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/FRZ177400520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c2bed5544b22deac35ee958dfdab9de3115ff293f87eb7c7dceafe0a9cb979. 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/FRZ177400490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6775aab167fbc5ce00fbfb99d80fbfe3de4254178af6a75f0d0ce11e09b6a08. 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/FRZ177400570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ff459662b8e2e004b1cf317958bb6b93855ea09bc455e93e142b8fa07d74ff. 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/FRZ177700900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f59c6ed501026ff494b84e9d985a5f24b31a555250909ff0633fc7c7b65b0b5. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRZ177300160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26edfd71646acc1dc2db1ecea16d761009bc0d3da2d834e0233f583611ec5aa. 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/FRZ177300170.
Chansons de trouvères: Voulez-vous que je vous chant... Quand li rossignols... Chanson de mai
Trois chansons provençales: Plang de Nosto Damo La nourrico dou Rei La cansoun de mau-gouver
Or la truix..., Quand je voy iver retorner...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07941d4e5aad692bf94cf206d330c2b5e19a1afde3c6d3238cc9aa9da7d8b246. 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/FRZ177300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d08604496646e497a3ef031ed71e4cb820bab743622c29d184027701d7ecf2. 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/FRZ177500240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577c34e24ade9f74b584c00d085e989df33bae2c9d22b9654eae60a76ec7e101. 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/FRZ177400580.
Les musiciens de Provence, vol.2 (Flûtes provençales)
Lei grand dansaire: Premier er dei dansaire
Deux musettes: Un doux baiser la bergère