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 0x7e2d44d31932450d6adb92454ca876f896429e79f0ccdd9c368e2e206e202cf0. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43d03eba-2d73-4ca0-b319-fb828c4c2474.json and https://artists.proofprofile.net/proofs/artist/43d03eba-2d73-4ca0-b319-fb828c4c2474.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 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 0xacb486dbbf95263898ab743b38e1056d90ef090224cb95a29ab2015b3c43f098. 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/FRZ178102020.
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.
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 0x646de3261eb6ccff7efc4c199e04bab1af5f0ff5cd60956b45bb237e0057553c. 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/FRZ177700820.
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.
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.
Noëls de Notre-Dame-des-Doms: Lou paure satan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a4505c3206c8382713461d10465a89e55952747df1370945d00cc64045b7e8. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/FRZ177400611.
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 0x69fee0150e22cee8af4a98956e58ef42219fb18234fb7cbf946630a921cfaf1b. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/FRZ177400540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057fd26b3f8ba057746ebfdf189f274204ec414eacdf899879f299680a073475. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRZ178102030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7e2e21e6c50358b990e22115c7f9f20974dd518e6a942438d4d8a284a6f48f. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FRZ178102040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e184dadecbb62e729d2e66aa2d55328d479dfde79492d3889d41cda4a668c92. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FRZ177300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7326fa8b4bcf17c38fe69a43cc43b5f3108e7fb50a4015094bda8b11bc42f4e5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ178102050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6748d49d629f0560d9819e5ea6a799c7a590e47de4f348fa5eec4a84ea65d56a. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRZ177301011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6291a602c18a2f99e8a571c13f801048b82cdce2b88814e92ad91d0cc037abd7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FRZ178102070.
Trois chansons pieuses provençales: Sant alessi Santo Margarido La passien de Jesus Christ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9938f09e226a104b88ea186e9976db1b443c610fe8a6ecaf8de6bb7d99c4fb. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FRZ178102080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3929eb211fd2714f196a565b50ccabee369b326917114f6ca6694af99148d9. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ178102090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524c0ab6dbf42e057aa9b0384f9c246a67e28538c0875f40666e0688dbb5194a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FRZ178102110.