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 0x568547f9ffe1b32e41a40e77e727e6f6cecfc34639ca87343dcdabd104ec909a. 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/4d0e2969-f10b-4e0b-88a3-3f4f3474253b.json and https://artists.proofprofile.net/proofs/artist/4d0e2969-f10b-4e0b-88a3-3f4f3474253b.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 0x33964ae816c0bc5234a2a4c1e9db6d296bda6ad2f0f74d18ae46ce0e8f51f9f0. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:00:47Z), 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/TCABI1278139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9d8b9dde9fbdce99d6ba7ad38bd5b2e7c98d5dc70d1dddce8cbd430f35206b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCABJ1286094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b6375bc86737b6157a278804cb2cea622a3b3503002ea15bbbf81027d57cfe. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCABJ1286855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8625ad9d5dc45ef6989c20f0388dd8f19e8b6f54587d527b7e598f9e0e41c03e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UST8K1555286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1601f0324bd844e629ca8e407355a0f24b393c089a597fadf7f8237cae0e37d8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/UST8K1555287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afe94fd345de50a808b76903766de0f90e72f584617a84c809a8841f0c223a7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UST8K1555288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce262f14b1aae6973b231b6ee037e6484350458381690f4e09bb4a2eb7e4e388. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UST8K1555289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b21945a4cad92861fae9f8bbe944b772f5bdf33384e87b32134723048ebb774. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UST8K1555291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9d5df1ffc4798294892716856cb3dd29e0f038a43a2ff0332519d242cb72d4. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/UST8K1555292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159c32354187dd08e48ef125903653302cfc865c5a5228d5e1bce39538bf735b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:07Z), 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/UST8K1555293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90bd0f929283f3ea8874a83fdaca13df139029bf5197f2120566457a1996b06. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:38:53Z), 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/UST8K1555299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a066aa450e9c76fab5c061acb4f757beac0c801a1dd0796d569fc1e49215a5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UST8K1555300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c1b8fbf9a6701233a6ddc36e9db003fef989e446d309c6d1b9ce70d19bb2c0. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/UST8K1555301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4439d0de0dc8dba8ba81f18ada8d27e60d5f4e251ed7b254cd2591106863ad. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UST8K1555302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bba09d38b584dcc9ad2acf663367a6239bca26eb6997c496834c7335386ec8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UST8K1555304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e7c3b8c3ba5d0edb3e7f45e4b16675987c848fbe923c147bf4357531cfe7f9. 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/UST8K1555306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5914410388fd27bc8a2d6d292849e14fcc137f6c96b4fde628ba443984794a07. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UST8K1552555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932601a4074ecff0a7bc33617f3fe107773a7e06459b911db6cbf641f96bcf15. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:28:55Z), 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/UST8K1552559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061ce0f8a89b8fb155df84740d2bc2630a0fcafb983cff75a5d83238af2bfb50. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:40Z), 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/TCACF1547180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe634dfc87efabba5cbadcde7c7dcb74ce79567180add5a5583d4c49a16bbfec9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCACF1547184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb375b1cc33e98367f1cded84890646e9d72bc87baf5467ec82e77fcdd6f0e77b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:18Z), 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/TCACF1547190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2105d1d6686f3dfa7103e470696c7cefeb603909c1bb18809bbf6e3170cb3a. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/TCACF1547202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681d5fb8b8d09dec4b9369546b8690f2096eb54d23e34123156d5d870e213b06. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TCACR1606659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09215bdddf9270510057bd0c51ac7cfd128f22ac1d36d967f18d202496feae99. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCACR1606661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc3ee27b69c7a3a2aef2d1fc5d7451fa43344b454ba6f81ab22a1db0ceb279f. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/TCACR1606662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef6649128f40ffcd197a446a82e7f0a54bfc65f886ed9941e1a05054c7e437b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCACR1606665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99f579727e2552e7bc9d3b0b146b2866a06acb8209383ab57dd0ae18c521838. 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/TCACR1606669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b4fedaf2ccbb79e1faf982487a87e28ed5ee1486007883d58ade913e930a77. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCADY1884986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc856631fa1e182b1129ca440b1c282132d370c4aa91be7d57906cd81a5c98d. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCADY1884994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d4de70e5dacef7b67b744d20debc750e2af871958ae654c33073f85e3ad2af. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAEH1979818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0f4b6068943b0c2795f7b535bff4d7748d0cfc60fcb3246e2453f26653ac65. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:20Z), 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/TCAET2007421.