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 0xac007b81d26365193e52f519b8db059a3fe4eec8785ed11bc743b2d50397d23e. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f137a79-a561-46d3-8b8e-8c7146560a12.json and https://artists.proofprofile.net/proofs/artist/4f137a79-a561-46d3-8b8e-8c7146560a12.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 0x03398a905bd2da8477ef839e1951e41612442d545d47951f062d2d8fb668f3ce. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEZN82530507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb180e61e0480bedf6cc833540f969d9d53e03f3d3be28d34eadf7bb7b82aab. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEZN82530553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3166a6e54750966c5b3bcbd2b90bfe97b658b83c8a1e7c2937eab326ea37df. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEZN82530159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f95cb1afc68464450279f078ca390f1eff44240d7cde5c5633c947ff94be13. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEZN82530355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9164569c982126e1d9d9ce9c2cdc1a09ebdfc17fb37c4cc874291110293054. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEZN82530221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd183205d0a270f2275745c7c5374178191ba7a43f39f0388f43153e610d0de. 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/DEZN82530110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c8abce332f54ff01456eae0138d86a571ce8e3c9060dd878ab4c902e77496a. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:41:27Z), 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/DEZN82530172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959ed94ab92b8d626163c7ee5e3406828cb9fa4e09fdcd96dc07f536e7e2e67e. 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/DEZN82530482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3097be2f1d47feaa3da11f6515d0a853f157f6f93e7cd67bbef633f47fd689. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEZN82530147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3fcdb690a88cfd723b2715a39d3f0caf290786f58f64f1242970db68932e99. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:23:58Z), 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/DEZN82530484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49882bc803119be64d1f7fbf28b2355cde8d30e613f8ccefbd4bd52c4f642649. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:51:46Z), 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/DEZN82530170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727c8d3b2bbe834bb87db36af130d29c204c62ae7bf41319e84f630a04e841e4. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:27:07Z), 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/DEZN82530518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a9b756db5364b0eba105044efdbea6bbadd62c36ce9a9be323bc5188a0ed5c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:54:31Z), 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/DEZN82530137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82301388a78ee7454f52c78fb0ea8d55123328e431a396c06f9dc188d33d4c09. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:44:27Z), 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/DEZN82530301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd86b295c5c47a17aeeba06684b9d184373dd9bf5c175805c7e8d157c8f1eb7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEZN82530464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124af1d0d581019c36cdc5f4b82494d6bb5b4c31499897222cf9243d5051712a. 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/DEZN82530382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae10386a03a417d684527b768ddcc52c147e383a29b928da795cfba5e40c2d2b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEZN82530546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93184edb0461e390fc6f1835c3530c0766fda6d25b1acec26018d75ef00a087b. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:51:10Z), 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/DEZN82530140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0d6e49026b120a377ce953d0cf316dc4846e556a80ea2a29318efa0a2fba5f. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:08:43Z), 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/DEZN82530091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4517c3ebccac11bc0d246eb87d59db3b93497063b836f279f65b69f593f7fa5e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEZN82530403.