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 0x59996d23a5c3da91d923efef53db3bf6be149c78bf3dd91c8f5934d45527c2ab. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a83b72e8-4001-4f5d-839c-aeb0717563d0.json and https://artists.proofprofile.net/proofs/artist/a83b72e8-4001-4f5d-839c-aeb0717563d0.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 0x9053706d570d8cda7849ecf663bf9c74676eb8d6125176f9acb83a8dafe07e85. 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/GBUM72309615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76063ffce21a91c3a70b34ec135197aa573c3edbed27389b88bc56eac07961e3. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/GBUM72308978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106eff2f534f87944fe105300460b8f41d45451afcb132321c704dbe70b61194. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:13:15Z), 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/GBUM72308441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7479e875ce2679d1fecfe08d2f9a116d059aed2c7ff0cf728b6a9e6a6d4a22e2. 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/GBUM72307325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323b573520f8d5cb5a873c87fcc930ab6e00a746c328059f8f7dd17bc6a20bd8. 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/GBUM72307605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375b96408bec86c5d8164e531f241d19f98b9028a40556d870a26382cb055823. 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/GBUM72307402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff5075ffaafc05563926c16d0cee37749ad07de4a11f18b8f0eb3ac5e00cc36. 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/GBUM72305557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997988e1b97dd042c8ba2dacde82f3958a81899d53af077f1c50607168a8c0c3. 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/QZQAY2401444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7420b4b6935dfaedb1bc60f5fcf6424b4be3826866c54a8c2cc32419a3f4451e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2417797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3297a18276b9f853e246137d4f24c3d532c7ba0d4dc91f2b29088ab83bad56cd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2417802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54543ad0e641478514302fa9b501de0e6c1b9cdb484067de07475a9047d9c1c4. 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/QZS7J2399364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd43f617989ee7803808bf8e31a9759c650dfe765ebbc0ad4763a4cdb87b6692. 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/GBKQU2364058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcb17f42afa6db15a1bef1f2c377244df9f91e7cfc11e7c592c9880f88ccada. 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/GBKQU2364059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3995f79121a763721e31a045ea433d3afa320e87021274783a53f9136b50a96. 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/UKZN92100159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45887663553804e2416b6e4fa81b08fa07c91bfac184e61f4bcc9f1e46dd01a9. 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/UKZN92100161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9053706d570d8cda7849ecf663bf9c74676eb8d6125176f9acb83a8dafe07e85. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBUM72309615.