1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd3c89fed45af14065feb4798d0086507f7cb434d7b0bc2ac9f4bc77912c4af24. 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/b1b1046d-09f4-4acb-be0b-fd73249647b5.json and https://artists.proofprofile.net/proofs/artist/b1b1046d-09f4-4acb-be0b-fd73249647b5.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 → block OTSBitcoinBlock must exist at that height 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 0x2436b5a3c4125d672f780f5872bf7ce6e9b526370cfa43ce3fbc9d27d52a65ac. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:19Z), 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/MX2160900095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ad021fe2972ec9461569e83ce68813457cb38bd3149a225049a0d373e6e516. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:10:32Z), 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/MX2160900295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc53e8980d31a0105267053262c8e98251090b538da3db357dc9cbc6ab919e0. 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/MX2160900302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49df2ad09fef10308ff778e0ade628c771cad23b977fe9e6cc48962dcdc2baff. 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/MX2160900577.
El ave de mi soñar: Mexican Sones Huastecos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af862eab1590c9f2830ca9d12b9869c327b8e949334f7142588ef075ebbda7c. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:59:15Z), 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/USSF10551205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25243a390adfa40acb1c73028fb9c14534d1881580fe5b968def95e166de0a54. 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/USSF10551210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5652d78745307c008d45b726d063b775f2cd10559d13e573db7ceb142bc4f75. 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/USSF10551211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa6ce726edbf65eafdbe0b95a7cad84dd043dae82d559d2282852202a5694d2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:36:15Z), 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/QM6DC1745653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e82af06cd9f2c986b82a8f971aedf95a128675b81b476d098a4db8f18d8b954. 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/QM6DC1745962.