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 0xd6d316afca99ab3f0329e82f2b10dd25ce39a6482856aa075c5031ef372c453f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba521a67-65dc-4b13-9720-df5292e5298c.json and https://artists.proofprofile.net/proofs/artist/ba521a67-65dc-4b13-9720-df5292e5298c.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 0x30f3c7726a907acb3e928318a827b1ac841be9da4bfabd42290da0d394f6adbb. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:03:41Z), 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/TCJPT2201225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee975164a7dd29ae52832276c2556b0e335ea229124e59a636eb1d0d5e3ca6a2. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TCJPT2232540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07e5b96ed50c7567b03395974e7f6c0bb8bc272e93163474cdb0be882feab64. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCJPT2257882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6480619031a614706b7255ed11c1dd863e742b6e6fc374d97e5449a468dca5. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCJPT2290597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1520cb58612c74b50a958ae965292e7b4a415761b7918b82a1199019d436a91c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:27:15Z), 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/TCJPT2290603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f3c7726a907acb3e928318a827b1ac841be9da4bfabd42290da0d394f6adbb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCJPT2201225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5351b0532b2b0a848974bbc06d43b77d695b74bf803360dc340e56e380e0fd5a. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TCJPW2322788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36892ad64316306a69944c23007e436b0f54f188fca0f03c747476e52f4ace6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPA2440110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4579f444ae4eb22743e273ed83466d8e45ba2fed13cff8de6d192e48663887b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:41Z), 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/TCJPB2416286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd656b5aeddbff9bb5bf4acd51e614aba71e0fa1652fcb9c75a219dd792dc24d6. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:32:54Z), 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/TCJPB2498918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4cbeaca442f614dc6b6c50b90552ed9c79a980cf45e262979406c9924deb6f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:07Z), 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/TCJPF2506128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0a6c119a229451f7174c7290ebabefb8162bc6ddf7579986580a811547dcd6. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPD2535163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd105ee66c0a6b858c8cb02c31343e19df028c4a93b23bffc83edd2873b2791. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPF2582574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90269ff887e641100024a75a2d2240f38a61fff56a6cf70dc520f549c9619ca7. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:19:51Z), 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/TCJPE2552002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedd93b115838e53300038cf259a490e56af55bd0efd2738f7f860f64e0300fa. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPF2582583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a2654a4874afa31a1fd673b8908e0e01d8ff35575aed6fa4305e8da38bc778. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:52:52Z), 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/TCJPF2582621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8423fac669d01f312a3a4c1dd2ec8d0aed7566166f29721ef8ae1b7f2b275499. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCJPF2568775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0a6c119a229451f7174c7290ebabefb8162bc6ddf7579986580a811547dcd6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:52Z), 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/TCJPD2535163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1019bb48f9040fa76323a92a0a9eab4801f143f90b906a9333159c5b08678c30. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:17:48Z), 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/TCJPF2582520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7843bdfeb07016665e9aaee63a1ae9f9f78327f279ba792f9c5e5ee255dc59a9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCJPF2582578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedd93b115838e53300038cf259a490e56af55bd0efd2738f7f860f64e0300fa. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:41Z), 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/TCJPF2582583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a2654a4874afa31a1fd673b8908e0e01d8ff35575aed6fa4305e8da38bc778. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:21Z), 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/TCJPF2582621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8423fac669d01f312a3a4c1dd2ec8d0aed7566166f29721ef8ae1b7f2b275499. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPF2568775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61639d7638176caa371c3ea09fc73bda79f941b3bcdda35f55810a6b614c550d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPF2582626.