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 0xaa18b2ff4f9424d6df249c0cb87e4117538454299b1ceebc60a00c0d30797219. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01539563-582f-4f4f-b08d-17acf8117afe.json and https://artists.proofprofile.net/proofs/artist/01539563-582f-4f4f-b08d-17acf8117afe.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 0x9e29d9828dea06859602db14ad6bacba808b6b82d4a5b36f675902380a0303af. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/TCACF1562525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9487d9462a343562b4ed897928e5ca50dd443ad02cea9007d8d55640cfee022. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCACF1562559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9a7986b24c292070f637f25acc9bfac27d67b94525358abfa120f3f028f0de. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCACF1562638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4a33ffc5f026f8ad66cf98913b4dce9b89678f77039d03915685446e0a7a29. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCACF1562640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43350395f2a88f9be9c29395955b1648c95f201e860e5ca5f8584350e76c4303. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCACF1562643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83a75990119244bfa1821994285bbadd663bc7e15d495101f7912bba6571c21. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:56Z), 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/TCACF1562644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0923368da4be4994894f10de198659c2dbb2baf02ef182a2977f7136326d4a39. 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/TCACF1562648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6284738e4c991696307696adf8e6f13b54c1a4bdbfda1a0ae3610b59c93720cb. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCADB1712180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2267c9778fab3525cb7f4d5fb0461052a5566a3c9b9187f4fbd4e40aad05bbb2. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/TCADB1712166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229369d90ccd25c7545b9a7782b025fd96b5d31e878fc5726d6df164189613a7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCADB1712184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4284a937bf7418230221170a82aa0d7ec10aa38646d17be3faa277a0644e9e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:11:25Z), 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/TCADB1712169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95334ebd72e156cb33ef68d2787932293f679be6068aa5806f5d59353c93f429. 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/TCADB1712185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d05eee8e64941fb2a24e5fe099476ee840cb6e447bfaaa2679b02598d2609b. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/TCADB1712175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425a5a7f25dc76425349c7cb217192cc3338976c6d696c0e9dfca10030e3a0e8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:12Z), 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/TCADB1712177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88341c8151d7f1d2d0ecf7f65b136805ade47403dce0d512ff0850b07bed25cd. 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/TCADB1712172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735b0e4a2b4dfb78d0a58f34a09bb1a5c0c8956443518499237e6dbbddf23860. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCADB1712164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeadad33384ed5aca0a817c58f44a2db53ca56e6f56ecf651006cd5d3c611528. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCADB1712170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d6eaf08be1020080ffb9ee34abc0bc6a7ead23457cf9ae811d464d091a3f33. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCADB1712165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4733e7ab8156f998b1e1f5ec4476ea7718e26a1c67dc35fdc449a69e8e5a055. 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/TCADB1712176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d1e999536ef5a5dc369cb840c13868fe9aafc24e2c1069d13a8fac2a652864. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/TCADB1712179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8843033124d560c5ce934fbbd2c78310afea600202e4a9af3e75a944083077f2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:16Z), 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/TCADB1712186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6443558dd7c4ed59b4fd7f27940fe89e2e9c38e2bca41cbeba7cb626a59701c4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFH2043890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99edf147c78495b9a6dcabe60d3f23a9f37bfa7a4e89d9b9100873b5aeb20568. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAFH2043889.