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 0xcb0b76d0ff1074970ba51d3cad50be9a591e9c30934971c8a8ebc3f0238d10b5. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0da05d71-1569-478d-88d0-9e6502c589b3.json and https://artists.proofprofile.net/proofs/artist/0da05d71-1569-478d-88d0-9e6502c589b3.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 0x96cbd571a287434a01c2ebe1f1ce980f79da0e0ce5a8e9b8e2c4e619c7023eff. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:24:48Z), 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/UKXN22556152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa910bb4bc1313b22bd8838031d744651828ea7d2ca7068a95a755a5c6184f312. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKXN22556153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7e34585bdd6c38f6cac0f1f0b2f1da7a21675e162786d46886197e501c9be7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/UKXN22556144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6e63db52d689bd18920d9569915ff5bc7d60a5f5c786384f053a4a46b3d586. 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/UKXN22556151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a0fb9c5e9b2e0eaba285bb545cc6885dda81fde7ec2730b781d0e974f68a8e. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/UKXN22556262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7851d14695a47f4f42b82938a373b773e0ce7907ed4ca6eee82145988a17c71f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKXN22556265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7381c21478fe9ec56252bc580b58c88c789e32def11f7101f5ae0fa1610b790b. 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/UKXN22556150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb8010cb95f32497d856573bb4d029b34d95c6358580d848f69991029f3f939. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:19Z), 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/GX3Q92575302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58921500143ae87d98e9c4ac7532653a524fc39e34eeebfd4083b80c5b4f5886. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:09:01Z), 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/GX3Q92581816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493ae19cb73c8587eea61fd72269ed94eb3fdc71e1061b82aeb30e7bea84995a. 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/GX3Q92581829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd025cc314ca985c486bd1c5985b934c558d3b9ad225f6750568d9c853400a800. 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/GX3Q92581595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c15f09261e10c71f1fce539afc3a3886a3b1fc97cbe010ea9f399c36ca5a3c9. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/GXHAF2548665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f485c9f12c9ca5deab12ff238ce24e861519a2dafc00dc3586dceb54c90fe2. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:31:40Z), 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/GXHAF2566695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdaeb0020eae7224924c8f9155a44974120bf4bfb82cd1aa8bc64c27eaad0ce. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GXHAF2566645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf69cd1cc98a023556f8a579b2701be2970e49fb97472f837ef93bd76d88276. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GXHAF2566642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81e654c6137ca9cbecad0ad46b14991b2207330d35cc3be95006345c8c84df6. 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/GXHND2503421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a6decf37b28f1fa4546f24a026035feb81aa01a6a852ae1f42b5580ea0d741. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GXHND2503511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f137e340dba678dc895370c249fd1f69cd52b5494e580c0dfd863e47b461ee. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:43:25Z), 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/GXHND2503436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a077ff7b6caf43baa757159ada357dec50a848e2ade0ab5319ec1b3c34b5356. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXHND2503420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1300b1eaf3359878424a830af6aeaa88c9afc49dce84843e5a71ce1ce967480f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GX53U2664295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ce97c669cb2c895951e6d2d81be7c1641dfb63ef411f2aa6c63fb1d08c0a22. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX53U2664288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a0d470dab77b53bdd2a84d5717255602f0f94242f2f844a56e1a99fcacd0b7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GX53U2664270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3643d3ad6815cdba501a5bc52431666d7c26d9e10030cac63bde4a9e63e7b5d0. 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/GX53U2664272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13825ba4a5346d0174cb88ba717c02032503d7a73edcbfc2c5f6556a1cad8449. 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/GX53U2664291.