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 0x92e2a65e7c211b8e82eb00827b7ced20f9c55aa4e0c3ab818141b775f19c312f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8039cffa-b467-4b54-be72-b73351bfc5e0.json and https://artists.proofprofile.net/proofs/artist/8039cffa-b467-4b54-be72-b73351bfc5e0.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 0x0c9ed6f81f83b089bf8f1a69304db7bf95c831c97faf5781294de3330692b0b9. 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/QZHN92516704.
IM GOING TO KILL THE PRESIDENT OF THE UNITED STATES
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefaa849ebdf720289620d70b5f9ddc6e2a8b449205768c55d6b3c096f8258ad. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNWU2529504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eec7faed52a2fc4067c78fbcee7fe53490e8891a87700e14fd5dac3f37e96d1. 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/QZNWU2529505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918cf5c2d070d17ea36d09c2af88782285a8942de4b3e37b1ff78820a2b0bd03. 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/QZNWU2529507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550524aef6a8aa686b7bbe918e504793a1e9a124ed6374b4c0888efaf727e6e8. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZK6P2533881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a83f4e8dd44697f846df56f8e95bdb9c2c710ccdcbdb4e58382ac4ddcc7517. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZNWU2529508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c41a26f81c8222e4dca7725ffd6d00c9daad27cf5c14d4a8f5fd718d4b27de7. 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/QZNWU2529510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83688b08d5fed729a31965ab165c0c89b5c6db070954fed67bb672034b02750. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZNWU2529511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee4df737f9bfa18652889fa7ec233d6232f6afcc05b985249cc1e222cfb1c07. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTBD2531902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf6a385a0fc32fe8c9eb3b43ef9258d585e600a987c5de42e7f5e6f5ee4e990. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZNWU2529509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefaa849ebdf720289620d70b5f9ddc6e2a8b449205768c55d6b3c096f8258ad. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZNWU2529504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99dbcde49586bcb774952eb7a2813b33cea8924b5a3afa98e6410de339218fe. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T00:05:41Z), 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/QZWFV2524134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d5551bb6a623ea19fcc0b066707fab1638a08af91567ebc2a6494ad93102a8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWFX2581120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1038b728792bb3939489210b6cd52e0d47319293100f50f4ff13040c6b5a58. 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/QZWFX2583142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edea02e6dd864f87896810d76a24baf10dfdebdbfb0ef03b63ef090965cd56b. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZZ7L2537533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891400a54715716b161f27f71027be8e757071ac473c4988db84a75ac228e4fe. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZZ7M2589676.