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 0xd4b612f9d32c31e8fc8296f5adf768e79e186713aa6fc863d0e398a5ec7cf6ab. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5482cf45-83b1-480f-9251-3a7b9d37b104.json and https://artists.proofprofile.net/proofs/artist/5482cf45-83b1-480f-9251-3a7b9d37b104.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 0xf9e33127f3a32e0860e52eb723e41f973394c2925ca590843d736d0417fb7bb4. 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/MYIS11100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b0b49da2f4c79e8b33ad2c58b76498371d4474392ea7a8409c7a5875682543. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/MYIS11100183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff6c3bb4919ee2af42ff6cf45bb8abfd8856c19dd3a336f4fcacc35c51982d0. 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/MYIS11100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bf768ae3db0afc3f3fd79fff6dd700e4061e05286e1cbf2f647618cf053980. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:26:35Z), 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/MYIS11100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3616c5e07e03229581fff20cc00eaedd5301ba693d84abb93cb608beaf52824. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MYIS11100152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaa2e47ae0ba43a25f730718139c82579b0cb18d77a2d1554d24a67beb96afb. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:46:31Z), 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/MYIS11100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12f2c686c6d003e362e2a07ba042db9d071e6148cfba2da354692a1ef05aedb. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/MYIS11100155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b8660528c6d48a3bc569cac5ef2dab407a9aa1d48547d069dba6df2a598a2a. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:07:00Z), 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/MYIS11100156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6690003b955b5e91f4164633ea1e5729ed43af9a18a819f530f52204c2d4fc5. 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/MYIS11100157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5153418abe6e7e5d2e708aaaed644e6d942610cd6d6420f5a084236638c8dbe. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/MYIS11100158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ece257cce69388bc5719eb18349ce830d94c326dc46ff460fd2b6873d6782e. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/MYIS11100159.