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 0xd2eaddff06175d55c1dd6ee338057e40f72516fabd5b6a8018edf9ead4970061. 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/4c8958fc-bd2e-450f-af19-580d083e4c58.json and https://artists.proofprofile.net/proofs/artist/4c8958fc-bd2e-450f-af19-580d083e4c58.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 0x4bacf97358d305654133d2dde6713a2b83ec53041f84d209d9c6c00668b8627c. 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/GBMA22324875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e448bf203aaaede68c063cc34c14163b0f39fddd4fb4ba4cebdf90d87a22ed. 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/GX3Q92462393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cd90c7817090fd902067f2022054cd8e1e4178c631961ecba1c30f16ea9577. 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/GX53U2018239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d13b9f52606f5fca16dc056cf7452302a36093dcf417c1436ed9f4b541f5f8. 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/GBMA22438700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7fb9ac8820c82c4d9b7b4c3e3ae29620def0b5fda278b6301c9e82de1f5f02. 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/GX3Q92474447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab425294cae02d7f8ec049a0a388fe98bb9973c346d9433419f33bbccfaa177. Chain 2 (Bitcoin): anchored in block 959147 (2026-07-22T15:43:44Z), 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/UKXN22451977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7fb9ac8820c82c4d9b7b4c3e3ae29620def0b5fda278b6301c9e82de1f5f02. 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/GX3Q92474447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fac997c24c531fccb4570244a4f3163ec2c7c343a6f3e405de37f488f2fc3b8. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/GX3Q92417781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3e34c5dadcbb7e272455fa758497eecc69d9db45c7c7fc6d2d00345ba50470. 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/GBLFP2432321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03874af8f9eb857e5dfb324d9ac87f139a5b10fba296c1628e08184790bf6a14. 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/GBLFP2409005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dee35f4e8103b808871fe341649098cf390d51255232df3479de7ec036ab14f. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/UKXN22366635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2263705587cc574373ce75b95c6b156363ca1128318d29c437de376a0160db. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/UKXN22371436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450c5cac9e3737f9e26c8ce5ef9d255643b28114832daa34b68b8ef7324b81b7. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/UKXN22316894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e926b1cf9882d5e9c5259b92ae987aa481161459f35acb3f4738ee76b762a11. 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/GBLFP2374741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386ac9cb899d9d6aaafff17fd9eb66ea1bdf6a0f1aadf7595af86edd5d4b0820. 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/GBLFP2356046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fab23da4f3a1bee9408fb6fad49004a0d32b3b89a9fd70693073b3c74b345db. 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/GBLFP2333179.