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 0xa6dc5ba1593ef3e2a639c11d2cb8943ff8b3ba67910c0fd9085ca20acff4d134. 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/48f7df9b-0ff8-472f-af9a-6c5f6da1ad29.json and https://artists.proofprofile.net/proofs/artist/48f7df9b-0ff8-472f-af9a-6c5f6da1ad29.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 0xe5c07987f518e42353c9f8c0e27e2256307def96c57055988548f43a8b216a42. 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/FRP102200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90e6768825466518ab56063950febd52111ec1057a732fb19aabb07fa6229cc. 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/FRP102200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44592b73b9f5074c1f5a0b29961cced5b44d631724386e22e1cde2ba8854b1a. 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/FRP102200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880a2dd156f1260fe0f096c5884ec3ff79d1e03cc272ac383255dad1bc804f0f. 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/FRP102200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa82f6a171ac9133deaf874d6215d81bde3c99a8d38c50ee257449d00a933ac. 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/FRP102200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd542dea99e6427638c16d5cf0e9a7185241f5e7ee77b0965e342af96b2252a42. 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/FRP102200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b22b5d66869c93035b8a710c228a6fc942def79109cfdfc549f1c324f0ff96. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/FRP102200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44592b73b9f5074c1f5a0b29961cced5b44d631724386e22e1cde2ba8854b1a. 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/FRP102200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324929edbfd63ae4df59e0d3e6a431819ee198763d6ae15f01097ea7c5d88729. 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/BE6F52200610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd8efdde1c9b958927874f9927385f8080e1e015289c76ddbf90004acd38a40. 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/BE6F52200640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67981a81fa2836632d65718972d6096fbe35598c8c4992cdc097fa1f4aa5a2f4. 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/FR8OY1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd083ae8892520307486df2ed049a66ae3e5134a8ca0c3b2013c3f9602f7d537. 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/FR8OY1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb5a8896e038e074eac8d19ec6bc4660645eae249e61ec116b758992b9ca0f8. 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/FR8OY1800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3d833045c2963aca7479899f6c9b003565238920cebb6b5851b8e5f24747ee. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR8OY1800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d76abd5488a73cfabec8b9244efa4e129513fa81d690875cdea81e064cfe37. 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/FR8OY1800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0082142958d2ab7fffc1233ac741a1bcc3128246ae78de3bc8ad1fb9592df86. 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/FR8OY1800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a97e295853eecdddc3c8d3aff561957d9595ecbc773452027628a4375f4db0. 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/FR8OY1800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07579fa7b4e814c6515cc5b0c673d21b18c8e601f23aadc3ddf7695624c6f25c. 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/FR8OY1800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd9504fb921ca2e447bbefc0d59fd14e52f3fb113d02aba0211d67e2f19a426. 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/FR9W11400283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2309c8bb7672e3fcb87ceeaae642bb534ff17dafdeb3d1bdff544ed8b1a834fe. 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/FR9W11400285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe3a84c9a6249c7f63266218f1612e4120a372d14c52f86d8f4c046b70c20bf. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR9W11400287.
Chkoun nti (Chanson Originale Du Film La Petite Cuisine De Mehdi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b836a8adf4c82f026f51667c8f130eb30c124c7e4309bf21004a89c409b539f. 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/BE6F52200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0378051466698632602280e39aec55d4cc9c910a1c8c5324acea69f52976b1c1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BE6F51900250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae6252c9e724b915b22441ebf110edab15cab00b93b081bc651808b54d22ec3. 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/BE6F51600500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324929edbfd63ae4df59e0d3e6a431819ee198763d6ae15f01097ea7c5d88729. 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/BE6F52200610.