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 0x8e3fd345125792655efd155ab4e227631ac11340bfb254dbda5044592278e46e. 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/8a232f3e-cdc5-4a9f-8635-2b826247c43a.json and https://artists.proofprofile.net/proofs/artist/8a232f3e-cdc5-4a9f-8635-2b826247c43a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bm pro instrumental Rai 2021 - Instrumental
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 0xf49f2369e213e2d99e5fa3130a95646fec213866a303e1c9b004b0bfe869a1be. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWX2056850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e6c9c730c9137d1997d3c3103c0b1be5dd5ea0d643f13ec7e782e563d1e600. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZFYW2139045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384c77b44ec0953cf8b43c05f8d600f7c37a5e3319bd537d0deffeab90a0513d. 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/QZHN92122058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dbc3749d7e805fc0cbb174d71187d6085d3d802cc1a899bec3de1bc4f7da18. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZHNC2182519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4922a0210baf9873ae134709c2fb233fb71823687517e0efb4d4ec6f8ec7b6. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZMEP2143943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a74d17aa016e375d3570e8b8983a61a972ad97883a8be69ad5a4898e3943af. 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/QZPLR2116923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f939a3ac12addcc4436e7696b9a643db2464f06a50eee09b9f90fda30b24029. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZRP52196899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb9c731de4a80fd44b5128f09c371b122cf407d3c41e9b7d423e055355852d3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZFZ22262825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030c8a66af0b88ad6b48f8c0f36019c10d3207fc31979473e3ee1dd63ea23325. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6L2209828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ab72ceb943c051e827a7ba2f8ad427ec321c2dce0dec2e146298c03cc5459d. 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/QZMEQ2244967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a0b7d742bc3900dc2bc4a7edc4b601384dbc368c62e7f6dd567f9b8e0d135e. 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/QZMEQ2298757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80955d253eafe07dc25a9f6efddb4d616054d5024494486df9418e1c8db2881a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZRP52272127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321237466029a940bad7c551b1ab4bf9108ea95ea05f7b6cde079f766725b0bb. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZHN82300304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbebcc1ccf5db4c6939d29a41bb376f222aa78b17eac70a5415d98f9156878c9. 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/TCAHN2384143.