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 0xd9bce08a31e5b2c0a698758b3c2f1b7e3872c52ccf343c1468a627695de2d606. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60082e66-21bb-400c-be64-4e6ea9ff8a7c.json and https://artists.proofprofile.net/proofs/artist/60082e66-21bb-400c-be64-4e6ea9ff8a7c.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 0xf0df6e800bc648141726ff9956540925d6991aec809cef1b9d82ac1facc9ee8b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:24:02Z), 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/GBMA22548241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e072899464ede0745d73d0e97cc9c202a75ac253826404eb2933d4d66f1377a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBMA22548469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c29fb802cf2c86ee6e070b078800bfcce190155773fe30ddeebaa9c91ab9f6. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/GBMA22548441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d5519593d45351655e514bf5df4b1fe34d04f03aab209d19c82fb69d09ee19. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GBMA22548495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6c0c54747b9b4ed252b5a7c082081ce7137773c362e1cbdb09db434606bf42. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GBMA22548470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e1fa8a9716210b7705c71042bb497b0c985b1860040ee31f3490a633b7d788. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMA22548468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb545add12d1b2bb5c0d77e05892b9962ebcb1b5da5718d2fefef04cf30f0d847. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:37:55Z), 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/GBMA22548466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831b40f375290986b006105922a973673fdbb9b4fcb6d57b3b57408fc33d9242. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMA22548471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024a50a8e3d5e6aa467809f14f0c3272aab872587e1404442cf17fa987c7ccc2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX53U2591376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7251f7b9fcae863b68b06cf6157e03d31a32def423311da46f963edfa3703339. 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/GXHG92582149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f162968ee08c16c29ca42bf48d9d7f8531d977ad81d2aa4cc95188034bddc6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GXHG92582145.