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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f6e69f63e9512fa576df971f8f415d088f39222aae6e29b3717c14a086e640. 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/5468710d-14b9-4d86-9a79-1cd787d416d6.json and https://artists.proofprofile.net/proofs/artist/5468710d-14b9-4d86-9a79-1cd787d416d6.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d192883ef56e1b8f163f72ad518af118355e9554f3fb16da4aa63bb86f93a35. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UKZGC2303819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b134f248a46d35c3fbd71b2bd91052b010062afa65bb3acd8cd35d9193adf37. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/UKZGC2303821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7c402c8d1e50c96b665a89fab4e244a9b05a8abb355ba90cbd2e607d5ef55b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/UKZGC2303822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937eebbe53f4bd01d7955f6ef2c6fda36303b65d3f92579c156cf461ea7200d3. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/UKZGC2306170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039ae227df2ccaf6b0943708de5b3f0af9d5ba4a8b379d83632a18f9c95bcf7c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZVEM2375245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c971cbf05ba8e484182494933d652cae13bc6b401db2d803f20320ed60a3ebd. 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/QZVEM2375243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb493b257eb5c0c5e351c6435b2878af669d170d47997c77dc4e16c8226fcb1. 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/US3DF2417002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6473c3fde728aa2f87d05d23de0d81526e910b0b32a1550e04afd72c922e9be. 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/UKZGC2402854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeedc74f34706d796a764328037f5b04244f0e9965fe9291b6ae5e0afc186428. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/UKZGC2402855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cc11bd4f019deff67f369bc44f1c6fdc9f48f827f84e0524d09205e5cd0397. 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/UKZGC2403619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56a7b0f06c4f14eff66238c02b12cd45426db580689688decff21f9e7292619. 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/QZPEW2424514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a6376a742b56ffa0f3f727d6abd541b5fccb145676003a08008084df2908bd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZPEW2424515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcdc2d8e6a6b559d806a7c876a38d8df86227cfd733140027cebfb69a480cef. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZPEW2438356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ef4c84e9e5cf95c5b2963c014997da186c66063e5fca11e50614e4235919f9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TLVEM2427324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48cc06b94efeaee4fc7407a0b0257053403ac394040babf6c95534012223d93. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TLVEM2427342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304d8ce4ea6d9d047f636bb5b6b9fae5e2df93e41f69c36e7ac42e30a8b34474. 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/GXFHP2486086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d0d1452c7aa690fbdeb1b18525aec6d5000b11c2f16efb8337e5988e862c9d. 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/US3DF2564678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8885ddfac755f54701f014d59692db5d215cb6550b8f5dfa7f10ea21e4d6930. 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/UKZGC2402856.
everything remains the same - slowed + reverb
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b0e5d17f136ac35ff45b9fd197c171fac53ff0df4ed1aa320e5badb7d0e25f. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/UKZGC2402857.