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 0x582d0eb9fedae93a65a893ed36937ae8cc43a253c413eebae102e88bc652f6db. 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/94068b2e-8203-48fc-a115-f0f63270011c.json and https://artists.proofprofile.net/proofs/artist/94068b2e-8203-48fc-a115-f0f63270011c.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 0xf170d0b92059c47394cf4996d0b8f3052ffffe3c512ebc1d6f63cfc1c92ca7de. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZVEM2313906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99223352ec576138e3f560fc1425523aa55f9bb9a3c6f5e12ec61ec2cd0e6509. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:58:43Z), 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/QZVEM2313907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98cd0571d0603287967009bbb04c7fb8453a53ec2faaab0ae2b44775c0649d0. 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/QZVEM2313908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e17b3702d0d7dc6d934fccd8c778f7bfa61f14d63ad7a663e6df4d7de4c258. 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/QZVEM2308598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4962600efee98efcf23320b2b6917a68cc39661112bf0adedb988c76d62a2ca6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:46Z), 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/QZVEM2317899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13c562c726c0da10771f573fd759887680f5144ddf5006449a2c309624cb58a. 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/QZVEM2317900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb186889175e3ceae89c0ab720dea4c924f30b9562a562875cc16a70e2a2ab42f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZVEM2317901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154c42a15f2b2b475a7065cb9f2bd7609cbaa4d625a9ade6ef2f440a038a6d82. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZVEM2322481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c68e0a0fd2ea8585bb6c2ff27be30a71ddc6a2f86cbfcd1d971149b2567c792. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZVEM2329147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeddb6ebc2c6b12dfb61b5e91dcb28feaa196a84a39897f14516afb96921ab4a. 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/QZVEM2329148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91266c58d2258e1fc2cc55dd1aecbb0af90a2ce02edb7605b6734fbc7e958c6. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:46:42Z), 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/QZVEM2329149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36687328589616a02d5d317825499100b62dca6da324cf681687e5040e008f27. 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/QZVEM2329150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef69977a5ae0e8b665e9156dbe65949cd4e7e91341eae75684fc9388f8028fa3. 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/QZVEM2343579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917ff18cf4ba4aba33c831e3cc6eff2de3a82bf63778694998cca2998620775b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZVEM2343580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4202b0e72ca1709e3d07e8324dd91cbbb019820ba60eb7e58be045a27b031012. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:34:14Z), 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/QZVEM2343581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9839d91b1d1741029f7f0718edba9ff7e337b4fd9723880d85426b2764e049. 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/QZVEM2343582.