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 0x3fb054f4e57fd5ae73adac18431b6a42f0a5dce9ece5538b46640edc1d5aeff9. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf757cc9-549c-4535-8ecb-463651cc3435.json and https://artists.proofprofile.net/proofs/artist/cf757cc9-549c-4535-8ecb-463651cc3435.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 0x8776e1e4422220aac38ed11c39f2eaab3c6abc9b044838d99d032f559285990e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/JPPC02411022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7081475d39dff498bc2844d733cfcd89ca6cb9c38a994b36b1bbe5b804c1ad32. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:15:02Z), 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/JPPC02412198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a4fd64ed95dc1ec3a17f61cd07fb1d6d1678dfe269d44a36d5c732742271b9. 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/JPPC02412199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdeb26c7cbc233db10d9bdff745d927b4379f40bb5adf69c54364cf542d8763b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:38:50Z), 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/JPPC02412201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66c4c0c206ed41797944421cd78e52dbe7940f998d6df1485d11e8aaa2d5b31. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JPPC02412202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580d507b2802fffb025795a7b800a1cc34b7631fc54f52f980bb9e88ecb8b672. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:54:23Z), 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/JPR652500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ced667c36b3b21169bf9b834f36acb55fea48337bc6c623dc9457d684541b7. 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/JPR652500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eaaa39c1af6dc964c08545e55809fc7bf8809b64ba1d5deeb079b1d75935c0. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/JPR652500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580d507b2802fffb025795a7b800a1cc34b7631fc54f52f980bb9e88ecb8b672. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:46:37Z), 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/JPR652500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfee2c5d6d8006e2ba5770073e7a8553c6c9cee249834422e9109071575c02f. 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/JPR652500066.