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 0x326277bb44477d5a82542fedc73c7b366eefd072673319fa8344bc05c8c7de94. 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/947564d0-0bdb-4350-998e-394156cfcc1c.json and https://artists.proofprofile.net/proofs/artist/947564d0-0bdb-4350-998e-394156cfcc1c.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 0x1cbb2341bb9fcc9da0a47e8dce8e703a74198fb23785968a409690fc2a703e3d. 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/TWB339505004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79abccb88125a2b7d24c7ac9378433f9f088bb4e5cb92fe88f49bfb1b38dfb20. 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/TWA719703021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5354c60b058f966913e761bfff4aa1e970ebccc5fb23f1dac372390e58c04aeb. 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/TWA531504229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc08a2294fe2575d9731514331566514d5ba208a804c775a811a84f27594b66. 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/TWA531504228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28482e34d9f318a45e0b671d1553beb6a3e86b6d5b55fdcc06305a14c3f49ee7. 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/TWA719603071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ac26d92e317b4ab8b52b41a20885e448c9246a4279c6706663ce042d046e64. 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/TWA531504262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf355c7bab5456eeb55c7b659bf51aa23aa042159cc8a82c939c5c5f47922a9e2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TWA531504268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c018e616046614724957db637e6d2a4edbea00a08f10705844e588d7c235c94. 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/TWA531504171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c4146eca53375d13c271435cba185792892104982a4db2a021ef3ce3b9fef1. 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/TWA531504226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a76ff6436e2766754be2f6be3e570d14417bed4cbcabd0b543570555d8d34c. 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/TWA531504227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc08a2294fe2575d9731514331566514d5ba208a804c775a811a84f27594b66. 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/TWA531504228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5354c60b058f966913e761bfff4aa1e970ebccc5fb23f1dac372390e58c04aeb. 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/TWA531504229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c06e15f46d0793661f9ddc057a21bede28f012a791a374dfe2853a0c112b72. 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/TWA531504230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45112a1a6b9dc6dd5ba849994fe0d74f5eb154374e6006a8fe5e1fc93fb757e9. 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/TWA531504231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651dc22686c22b717390ec0816ee40818c1617e493f402fba617f166088912ea. 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/TWA531504233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7070ce8f5ce9df98e30cdddf789188e9166eadb5b31858fbc192bfe23d7c2b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWA531504234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbb2341bb9fcc9da0a47e8dce8e703a74198fb23785968a409690fc2a703e3d. 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/TWB339505004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b07052f0bb681e6a12ad0822dfedd2fbccc9042677e234c2afb8a369206773. 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/TWA531504049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60eb774cb747972c3404a1671568d119623328decbcec60d4f2d0adb90fe059. 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/TWA531504059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87938d2fa6b28f5712ae24f05b9716a62ed8061f58f7ff2dc9b2e5fa63e7372c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWA531504060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a43087b345b6a8e956e7acdbb675838a4c2633e76df6dcef7efd2cb4ec54d7. 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/TWA531504062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951b396d3128c42b068d7e9fb216c03d46af35d5cb67829388d764b2bf928703. 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/TWA531504063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8bebc333fb099b300bab5aabed69e826d79549af375c845aa4276897af8af3. 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/HKB120700580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8ab021f64b25b0513ca18166ef989a4d142f5ca6a1dc037b5e69e5e0f9a220. 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/HKB120700581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ac7be15b767088474576537c5151641ac110c593ed6900ce88427a65e68bb1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:34:43Z), 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/HKB120700583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953693c8db294aa58510855773b8b8927433cbd198fd731d26cce70fba6046fb. 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/HKB120700584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1987d24a661d6edc5a60c9e4fa80612b9509c7eac59a4a7321685e85d40be8. 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/HKB120700587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe627f76d452c307efecd413fd38604230268ca49d6ade1dd86cbf4a5d5f87ff9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKB120700588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d0b789531d91f95dde650672c1a14861426879876b18ac5982dffc737a82b0. 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/HKB120700589.