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 0x4e20994bc8eb66d12da13f7bc88590067fa3145874fa59d249598cb7494e90e7. 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/64cc6e27-1c3e-436c-befe-1305efc2df52.json and https://artists.proofprofile.net/proofs/artist/64cc6e27-1c3e-436c-befe-1305efc2df52.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 0xbe97479df43d7060162498e73f3dcbedf9d686fb2a0ff148c56ba38366c5a9a2. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/UKZHW2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433584b7febce9441af0d0b5bc95ff95e378578f2a889524ed4590a44c255554. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UKZHW2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0102c141a323b33a29f5434d6708f2d8156a853018e21bc5b6b5a49d48df30. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USMRG2383302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8282561f3d79372397162932367f887076cffac770488ff18c9fe5860da766. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USMRG2383305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc1142b7a8b53e8937480c36a485f5594c712407abcb6254d2d313e5a267220. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKZHW2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548ae33e7bcb699286008bd3b7e8bc960ec4f981e9cca47d83f83b9a4b6ed00b. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/UKZHW2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119eb6e53bab87f2336076df4ce706b995199894a592e3881b24709fff30f217. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKZHW2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cbbfb9d08d3766b027d9e6d4a7fb9f8a77cbdbe17d2faf67766c82a50d2fce. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UKZHW2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0690c0160306f79f0c8c5d82932db344aea325eb64499d57ab340030de4315. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:51:37Z), 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/UKZHW2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d32a9dacd9879ff90025bef09e5eeb81cc94ea57cafbdc6c7061c252ad6c2e7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USMRG2483322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d32a9dacd9879ff90025bef09e5eeb81cc94ea57cafbdc6c7061c252ad6c2e7. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USMRG2483322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d6e834f78bd98f5bcf231098febd2f88782f6efdb498162a7848b8d234e939. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USMRG2483321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e64b2f8cfc0451c18af8afd54acf2a84c278d3d86937b1b8ad3f1c6e13b5d2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:47:31Z), 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/USMRG2587304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d32a9dacd9879ff90025bef09e5eeb81cc94ea57cafbdc6c7061c252ad6c2e7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:53:34Z), 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/USMRG2483322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96674d9e8553425b148d857c1ec7e2aa0e52966052157def182c4f14ec5cd44. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USMRG2587302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e64b2f8cfc0451c18af8afd54acf2a84c278d3d86937b1b8ad3f1c6e13b5d2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USMRG2587304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560170b02f837e425ac821dcc4499ffe4b85502b619e49673eddcb20532506f1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USMRG2587305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b7f854cb61986a9de11d91a6de613ba80302eb369e5ad5deeab1d9f7fc8887. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:36Z), 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/USMRG2587306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d46192367a3d6f1a163ca81e8b43b69bb4cf9578eaf1726b2bd4e61271383b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USMRG2587307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d32a9dacd9879ff90025bef09e5eeb81cc94ea57cafbdc6c7061c252ad6c2e7. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/USMRG2483322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eec403507a8620be4f8ec5c1ca6459d126ef600ac54b7a4e6523bcbd908923a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USMRG2587309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4faa2350fd0c812c7970714d3cb5d6b1b89657a014310be91689a7b994a0c7. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USMRG2587311.