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 0xa788b1b243702c6461ebf5f8237d9fdc64510c99a8c1a69f568e2a1568490695. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d02cf165-1b8f-4a94-9d99-57e2850f2087.json and https://artists.proofprofile.net/proofs/artist/d02cf165-1b8f-4a94-9d99-57e2850f2087.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 0x962e736018d752cc62922a7df03de0092c1dd8df0e4a04e1952b0ada46f13a22. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZS632357201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53ad35e75a80df19e72db3bf337adacdf3bb1372556e9612c729a361f10ac05. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMHM2265282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1707e01f518c8a2582cba221630543767965ab8d6515b19df51d40a9a2105504. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMHK2366148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca4a8aefe7932ddf4a4d53d1c6a9957b9381acfa1a14bd6eb9d9c17e599f66a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMHP2394020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6ce91c74142c1e954a78511b0059229b4eca8836c627aa6dd4419f445f6727. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZS652365384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2596c939d32b41505ad5eabd42cb88187552d85ce8221f762a67044530ba4180. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM42K2325205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae4f77ac89b4c27e65d0e363b845614f76870c82c81880b248324c3faa703d6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMHP2340006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e2663c638497c9ddee0a55ed257d8cc0c4c12101a12c7c51aecd7f5c9693f7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZS642357799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb803812df9935364531d2bf55a59627da2d4711f02c4be3c86f2735cd7e9036c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB7YL2100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a6e7cddf77c39f9cc4e0b0e48b924a262decdb0d068365c9221d0b2ecc0e6f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB7YL2100183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43d5293b63d69462ea8370bef9e572760050a39c6fe880d3a7bd8f598fcac0b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB7YL2100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a11c916142b40fa17681b8bea79b8899ea8f843dbc1e49bc466824252c95634. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB7YL2100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53ad35e75a80df19e72db3bf337adacdf3bb1372556e9612c729a361f10ac05. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMHM2265282.