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 0xad404e1f4b54b17329f0c1de29286776695edccbc15b206340f6de671bca564a. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0333680-0281-46af-bba0-f04ab276727a.json and https://artists.proofprofile.net/proofs/artist/a0333680-0281-46af-bba0-f04ab276727a.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 0x816eef5431cb7b3acaf5a1c5babfdc75823e847d75455100abe4a37c149d5b8c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZS632306888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6b202029ef30c36ea5f1c64ded19b868c3475134adda1e709fb10b62493470. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMHP2305349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a7587aafa16871578a1a6b3092312dc3ab375d827f341d9ebb238ef29e2e33. 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/QZS642328225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea020edb7d3032ed84f78d81b716edf01bd3ae41710b52123bf927bdfb00aca. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRDX62303170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb366ecd583c3ca10a8fc6ecc15de8b5335d1af044a4f96c0463191d54c467eec. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2417238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696faa9962b98134695e2f1c6d7e6b2dcb0273af6019b26d948a6982befd99ea. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZES92410857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fddc1d7e1e79663317f3e28ee4a6d11d0a89613f1d6bcde2d4f128a5e323ada. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZES92410859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f209374d12844ed699114fad3275554068531807aee7dbed7fd7b4f96f8f3f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZMHM2407967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41252344b95f3e3a22a51d0f9a87b2aa4b639de12c9b98a9c447c2f5513fb9bc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWFP2385530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea020edb7d3032ed84f78d81b716edf01bd3ae41710b52123bf927bdfb00aca. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRDX62303170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4016d8edebe66077864db54a68b47d5636c4f7189925022a8407f4c0ddc7bbdf. 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/NLCK42225985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8b436764c4b84cc29698069369c5c69958fa2fbe4dd25e7f16822c5805d69e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEAR42287532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fe03a267366159854f8fdb17d5dbc77ff6951a59e0990477b0dbe15b266994. 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/DEAR42263797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0be88f5bd1d4b50fc1ad59cd5d766b4310a62a0518b22a63ca0decf9f51cad. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEAR42287783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c3d5ef277e9dd88c11704ea5aa7091141b89b61cb4e7ca5b28c72abdff0f00. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWY2155097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8ff6deac9f60505f65562306f0bb6101a3d8a68c3603d3dbbf0049d51d60c4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZS632232546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8541e83be0be70f91a3ae1b691843fe4184b9cd14da2eec03a94023809507513. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZS642274893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8c5756a7d0798b7a8d75650d0c511da1ecfbc92ac7e676d872927ff02cafb3. 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/QZMHK2243293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb125e49d4d1226751ce0e8d0f38fb826ce27f754d651b5787a7359df59970c1b. 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/FRDX62403180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fe9e9e3396520a886f958d76c20979bd1006844218e2357eab47c86e97ca59. 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/FRDX62403300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271e4d84bdd5921233d82c2de9cefaeb70db848198562fe0218adedcd06190c3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZS672211203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14db69be84cfd5969fab20f6f347ff172d089b0e161d615f436711935f8971a. 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/QZMHL2203640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bdd73ff450698fc837020f745613ca7bf33e183fb63cc706686cd053bf980e. 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/QZMHL2476558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f45245da40946b894059aed4bfcb2acace1f079745b3758f090f10f7c9aa01. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLCK42225980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dd39e493ebe5af138dce7e28b7826d10eb740b4373bd3f80f6606b17c12c18. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2429482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46cced679bc4876affd547cab287eeb5510888e2b5d53a0f2dab4caa2d01a5e. 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/GBKQU2429485.