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 0x2fb171e891951d7ab1b37799bbf91675903bbf593fe6391154311ae4568e5e4e. 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/d4521fb2-10bf-4829-8d21-8d3c682f3ab4.json and https://artists.proofprofile.net/proofs/artist/d4521fb2-10bf-4829-8d21-8d3c682f3ab4.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 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 0x3215a4db03e6a2283cd59ab11a179833290d229b268638f5a71901f5910a60fb. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/FRDCP2000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183e4ec5a5cf220f83eacb5c2975b5a3aee013bc372545d11bdb3414c11fcf97. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/FRDCP2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3215a4db03e6a2283cd59ab11a179833290d229b268638f5a71901f5910a60fb. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FRDCP2000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1a07f3860bc95eeeaf619f35f9ffe864e9c49167d358ef3038cff0abefd8ad. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/FRDCP1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a8877f167788930071692ed27a54ecd3371ff0a9efda72be701410f40b212b. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/FRDCP2000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2ace2102770e0ee89ab55113cf01d672ee7b41b6a9a178d82315bf31248d85. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/FRDCP2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183e4ec5a5cf220f83eacb5c2975b5a3aee013bc372545d11bdb3414c11fcf97. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FRDCP2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023ccb19bd680feb82daca2c27d57b894ce95667d361f27da509ab6098c3f2d8. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/FRDCP2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1a07f3860bc95eeeaf619f35f9ffe864e9c49167d358ef3038cff0abefd8ad. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/FRDCP1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a8877f167788930071692ed27a54ecd3371ff0a9efda72be701410f40b212b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRDCP2000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5d11d4ba4cbdaa3a66401bbcfe4956ddafbe59ac2cdef4f59607ed0cadd600. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/FRDCP2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183e4ec5a5cf220f83eacb5c2975b5a3aee013bc372545d11bdb3414c11fcf97. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/FRDCP2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3215a4db03e6a2283cd59ab11a179833290d229b268638f5a71901f5910a60fb. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/FRDCP2000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a8877f167788930071692ed27a54ecd3371ff0a9efda72be701410f40b212b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/FRDCP2000120.
Sans Répit (Soundtrack from the Netflix Original Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5f07561f7f4712de453fd11a068000a5c8930ba0dcfb1a9bc7cbca8085c5b9. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZ8BZ2409316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02606a5748ad11744dead56101e968b6dc8fcc5db39cc8a288280cd993fb77d. 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/QZ8BZ2409322.