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 0xa628b6708f4a34c2efcfa338f848385ec8b6a09a891ee9e2ee93be6a176e903e. 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/5cecc81a-16c2-4f0f-a5de-084bb9178937.json and https://artists.proofprofile.net/proofs/artist/5cecc81a-16c2-4f0f-a5de-084bb9178937.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 0xaa32b6b068df5543326929853a805b7cfde5d2f74fe60f5961b0e77501538a94. 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/FR8FB2311020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c076d11c7fbd0f1ca49283442539b3d005693d7e54d776167345b4ddd23cac. 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/FR8FB2310104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d0d394b8524e8080ce9051f7bdb7248947d195afecad2d59dd729978ca6e55. 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/FR8FB2327510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd23ede42d9d190c5fa384524ff32fdee16c67566fd3632be7b3a24615d555ca. 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/FR8FB2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1be00be484787cdaa93cb3180fe7bb582d73f21861f7c54bfc7a5d5b403c70. 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/FR8FB2400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2f23ff0443d281627a584d5ee990df655a65fc9cf73833144e099d5ebdd1cf. 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/FR8FB2400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f65b43de29c7c4246360a671f16e684795ebc96a7c4128a770c65fda3f3277f. 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/FR8FB2400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc6032b337ca6fa2abb09622436764e1b008a2b2093e4d85fcec18ddadbdc6c. 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/FR8FB2400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c9f8b372fed722dd8b72ea81107d9dc0703752b4b0e05cca72ee791253fde9. 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/FR8FB2400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711c661d8a8e54e4d9185820f1958c1881c8c00e977f0d31ad145c951d6452f4. 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/FR8FB2400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2f23ff0443d281627a584d5ee990df655a65fc9cf73833144e099d5ebdd1cf. 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/FR8FB2400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099c5725d9eef9cd81a41f2c214f67f2aa4766422c9b075107f87659df425944. 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/FR9W12323538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cbebf712e050fd674a28cf2849221e95d550d3a78bb5cf6233834504f6a1e8. 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/FR9W12302765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c78e0009cc8cac3af2953675e180884a55e61d32f2bea17a3224e4e5a1a0ea2. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FR9W12108798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9accf0d021f21a05d50e0125263d6c78de717799a95adbfb9231124c831bf696. 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/FR9W12108794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f9d2b1fc900a27f2bf5bf1b0a4b9c8eb7edfe5f56287db1339718ea7f8c82b. 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/FR9W12108792.
Je te pardonne (Maitre Gims Feat. Sia Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa88085ea05a888f3039090e34f8b8b6b65b57c3864e268128b8477b8f0dc41e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR9W12012198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a54762c1775271e34f1d5681e0433e05c05306a51182009993a21f823e6f927. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR9W12014583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7813a9684f73e866dd28dc66133fb385734af7d392a74d84b91f1640e0cf926f. 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/FR9W12014317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e4c035d1e5082ae19c705156c6af78af74e303321d07ff80fce257cc6b36df. 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/FR9W12012199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35eb5defa43d23bbddeca5d51b82a50e2716cdc26200e96b9eb87d5680d53dae. 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/FR9W12011401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9db9882bed9a76dde7ecac365bf214766c8944c5c6a2a6caf9cc1aa465f742f. 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/FR9W11811502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ca1fc07a20a3e5c70ab376f27630c57ca75ae3894ec5779bbb4291054ea8e5. 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/FR9W11915419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a08bba1a6ceeb4d2fdcbc7d54b568a6d445907ed7e58b5defc8864dd9c930fe. 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/FR9W11811505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e6881702eeeea4d88d60448082bc389c47120072c0568fcb4092bf3020ecd1. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FR9W11811503.