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 0x205c5fc9dbacb130a2eff099ab8c17651b8082d9d7471d2b0f96e657057cd32b. 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/e5d31a98-8714-4eb0-b771-b17f9492911f.json and https://artists.proofprofile.net/proofs/artist/e5d31a98-8714-4eb0-b771-b17f9492911f.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 0x4219fc7d7a2746dbea72a8057405c6675802bbcf8d9faeb58ae8af1139cbbae1. 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/QZFZ62370821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e796b9b0370e578470e2a5f9fe65494b469fa03584c775f58561aa314f9fc86. 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/QZFZ62370822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36374ed63803a77209caec1173cb2d097f782b72c382dfd16d340928f7180cca. 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/QZFZ62370823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a061825423dc6e45fcbeb7aa0353c538d19774d65ac85cc3cd43f9a13f2307. 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/QZFZ62370824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd904e57a61a22205328d5a41ed3fea197c7caa507b15920309bcc94e414cabe2. 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/QZFZ62370825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86850c30c18bb8c8663ae73d13c0c522880946b8555e6292071bbf3e28db412f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ62370826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f78899c56f392a46f3f76f0882f8f8a227e35304d29012bf50b27e6465d6814. 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/QZFZ62370827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aed04d9fe6f2df8696e02e2a08b223236fc1f35216deec77d77be5a740848fd. 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/QZFZ62370828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462b09e9789c8929fdc78d591a65cb81da2a83b129579aa7e1f3903107f852c4. 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/QZFZ62370829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75870a4a693de29c8a8bb012ad94321d9e09f9cbfbe7b1170b1a1f8f7f54df3. 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/QZNWR2410457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3858a9c9b8b381cfd938b83655b1bd9583092b20d8f2d3f22c75fe1ce1fb528b. 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/QZTB22373583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75ce422dc8577fdf67ef143856c1e7125d7c46854762bdd9a251d6fb4e20ad9. 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/QZPLS2235114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b493896f40de6bccc83638be3410454c8f606f3db3d8ebc8f242ffe2c4508b6. 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/QZK6H2243295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ed679f350016b8b63cba425a97c67adf512640f21c78ee6c1171e456cbf5e2. 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/US2762101995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b8e04342213f4530474661f43593236478679e6a9dfcb5340eff0c531aaa8d. 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/US2762101996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e6020b2b0bbd5031bd903a71b381da8a4755e2bad4498bcbd9134436c5349f. 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/QZFZ62264597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c3b747caa8f2d6a4cb97972a17a7e7e4d7b77360e60a7bc64af1d45b15ec72. 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/QZK6F2194316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6168246edbd667244c41e7032bae89110fc6e2a505da0dd30784fa871b42fdcb. 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/QZK6F2194317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ab536394a05ca3363bc936e9a08c24f76c3d8ff5f547d94ef542c987a550ed. 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/QZK6F2194318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3a75345e799b7a8eb7f805e20aeb153ed7e84462cf4738488948916eb3382b. 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/QZHN32108308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c3b7064094619ae871c9894f1e2dc7f64ecc1df1bd4f7a9c143868984da053. 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/QZDA42139818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad5667162162a7d52208834c03123c4255058e6b2d4f72a083a815d86c8a956. 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/QZPLR2098598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3865f7f5816d9dbbb01c6b104c80f5cf5da07fdfc098a16a7dc55243d0940260. 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/QZMER2038459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d48b1651a4c77e6577763123aa5ec6ab454935e0e53c102392450ce9f877ab5. 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/QZMER2038460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf88f430a8e97437538b6e1bd2a464e2664359249df8379515bec86fa02b6c4a. 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/QZFZ72500196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaab1e7ab47effbde3758dabebe4e97e4f617ba70c6d6ccb1640ca5ce47cb88. 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/QZZ7V2446946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe854f372b2f8d3b67a8af51417171c961029b129f590820cf417001130aee37f. 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/QZZ7K2426282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8ad2de105cf2399a30571c5f36b1898a4c7c2cd938befeccc82f2295fb79a5. 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/QZWFG2407206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cad5368ad8f831b9b081bbad39338e9927fb27b8ed6f2716758fc6aef0b1a23. 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/QZWFG2407207.