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 0x913e47ab35fd62f6e85eb4252c4ef389f212ba64854f2b31c91c7412cbeb7418. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5da6548e-9d01-4037-95fe-9eab2f476e81.json and https://artists.proofprofile.net/proofs/artist/5da6548e-9d01-4037-95fe-9eab2f476e81.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 0x046f008a974a885675666a253e38187a0b08daddb41655e27d3c504e4655ed8d. 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/TWB670705302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c86acda2ad64403f2dbb24285a2cf285bc1e7fae1f05cf71000ea1f86b2ade. 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/TWB670705303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281ca823c5336d1dd4821a397cb5d6bf685b458c09408e57ef80c2ed4c2b2ca8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWB670502407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b3602729f773efdc0b942a43bf3fac7eaeb4fee5cc645728c8f8c707b43c57. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TWB671109201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bde1227a4a345758c9497bad09fee6149254890beb8d435ad298c2901f03997. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TWB671109229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3447f991d2641c5fd283ef4095e90e2a5330813a777984d8aae716f04cc9e260. 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/CNZ171500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb228a8bb343ad4154086010e69244f03c49af05c18d9ce9cafd12e137bdd3d2. 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/TWA470505001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c3698948c1b938784307b2629358a451ede973317e839590afb9b90214dc90. 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/TWA470505002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f5422ff5a4c0b2c60f41c86bc12f22e848b4481b9a08c6dcbe64b215d2bc0d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWA470212002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1025e42ddf50ab252c5dfc97e9656fdddec24dcebda93f3c7315a5061070e5d. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/TWA470212008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0810818daa5463c2038c6d782a2add5c7a9e958a0051d3ab0bb34c4756f976ef. 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/TWA470212009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1640fab82cb8646463025d9cb8c8b29c92f80c5440ba3e2fbcd9ea6bf28d87. 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/TWA470349005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971f382867dc920c4dd0fbf5abfde75b4323dbb8af2920d5282ccd1a6115d80f. 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/TWA470349007.