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 0x728e65ef5c2f483b4871d1ab12755b6a8a389b493d05271aa2a8f513c3fc393d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4abf1c7f-6f73-4935-9064-d25f9eb85eee.json and https://artists.proofprofile.net/proofs/artist/4abf1c7f-6f73-4935-9064-d25f9eb85eee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les noyaux sans cerises (Original Soundtrack)
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 0xec14c5b621e1e62964337cc2f3deb98e610ee81d4f9df9e4b21fd0c2d6d6e5f0. 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/QZ4K31600345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61c3539925d0ed47ad663ca2e54dd332749df6d943ffe7b6f8d18806457caf1. 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/FR2FD2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa00ea8a9f25fc14cfed5edf344f16f388b2a89248e68ba89118ae476a6e8322. 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/FR2FD2300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6836fa8e052b6e305b5456874666a5e4787c11a526c00abe6472217e0656524f. 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/FRPZ92007080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f705c0b6761d1409b4e6f82662e7f50919cfdcafdaeba2fe9c7c398bfdc34c. 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/FR2FD2200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d3b90d0736e90bb10ec28fcb0497f819ac4572a1924c6c8a2f7b2599b28df2. 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/FR2FD1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6a733034ee77c247ac67649f6f3770806871dccb7892e75b1891e59d751807. 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/FR2FD1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5fe12bc4aee4523dd142b5d96765ec29cc7e21780d7fe342a4be9ffdfc0208. 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/FR2FD1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3cac49490f8d936b46483706ed8cb48cdd823e9f77b6b389fb90916090f80f. 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/FR2FD1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561983b9e1b398d7b38dcbd9f18dd626fd02c6690bebeb07ddb39cad620c397a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2FD1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cb11b5fc02b09e15289ce4ba1eb57e8f68a11047f2265b407aacdf0e5f487d. 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/FR2FD1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9342c4a3bbac3c9babcd2acbeeb8c24b14b43f2a2339872b021abc23ce08474. 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/FR2FD1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e95b51bfb66c34b7aa9c4f6216e730bf8be1db4f23fe7cc60c1f435dce2b36a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA082397004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d69fc72f543b8619db6c8151aa4a9b3fe1560dede204f4b1818576a31661845. 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/FR2FD2200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7023e7647564ee803c2c5d057679174b108fe486ca7f8e8ad6451198e92e38. 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/FRX762163649.
The Big Blue Overture (Maud Geffray Remix)
The Big Blue Overture - Maud Geffray Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf892452c2f043a0af00afe4d681f5f4c51212e73265239eceb7821c72e8085c8. 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/FRR412002001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b0af5d84392a226634ef01cf3b86b81086c6b25e849b9bdde247d2de943521. 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/QZ4K31600120.
1994 (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16faf0965c0e0e308a7368866f188f98a3cb19c2f4d316a6d553ff91a4ac5fb3. 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/QZ4K31600059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008e3d0114c58d316914586379a3ff2ebb469efa9876b347f86485a7cfc79c41. 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/QZ4K31600062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9943bea414265774414af94f58d7d8f1f931cd485ed343646a69262e7fe36bfb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZ4K31600066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f30ccf3ce97f4020f71ee8a313e5403a154fbe0df3e46e9bbf02281fa88aa5. 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/QZ4K31600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f1a4a5b9a36dbb6e46019510d990064e774215fd5088d2fdba87ee715196ed. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ4K31600069.
Ready for the Night - Junior Demo Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dc0e69475b834e585c95d291cbc46b209364a8ae6d554e59b54622f7d24236. 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/QZ4K31600070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71963d1def089cc98b756298aea31f0b87b34da5bb6fdb59fa732c555a773d6c. 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/QZ4K31600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b0af5d84392a226634ef01cf3b86b81086c6b25e849b9bdde247d2de943521. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ4K31600120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22ba7644dbb738e19308191ca4afb487e49ec0412da69727545a29373dbed23. 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/FRR641700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc250de8512632d62d7cfcedc8f571c362d7eeecb160f7483789986cbfc939581. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRR641700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddd724f3df8af36d0f50d1f4554f1afcbd6b78ecb2ae3154197d53a33303de4. 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/FRR641800255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c11ee96cd10bc1406a4fd7f73db0d39f8596870d6eeb61a5f578c841027d162. 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/FRR641800260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b0af5d84392a226634ef01cf3b86b81086c6b25e849b9bdde247d2de943521. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZ4K31600120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9126493aef635c372c38aafb1a29b7f9ced334f69537f2de34e6f3520765533. 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/QZ4K31600311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea072a797cef83421e69092a39cc5b23fc4ce57f2f478d3690fca17e715b16a6. 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/FRP3F1902360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2895cb6309e6b30f921689029bfbded5081ca3a3fe25ac7023735c9b774cfb36. 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/DELV41900702.