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 0xf4911bf4dff9d564bd0e4d3ffd540c9b7357a4953774cc76969fec3af3474e67. 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/b45446ca-bdd1-4101-b78e-25c6ed3920f2.json and https://artists.proofprofile.net/proofs/artist/b45446ca-bdd1-4101-b78e-25c6ed3920f2.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 0xf39811a3f2d059c747975fae4576a72cea4c5085584dd78e80c6c2987acbe947. 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/GBRKQ2425892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1849a0b9f07209172976987114bf26c65ccc946c5db2142cb18cf87b2b143b8f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUYG1546035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3cdfd8193cb6b256f0bbdabe464a2b0f5ea117fefefe4b36b60f854f4b6dc3. 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/BC32K2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd440996bff0404d53374a87db9cc3d2678616b524c554abfd46903454ba859a4. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZMZ92492794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ea46d7012431650536ff48ef6b7282b53459682a8399bf671d50775020213b. 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/BXJK02300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b595f5eddd6aad6c1cbbca7e5e093e47841f4d0e68c334110aaea17ba0aac74. 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/BRC3Q2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e54ef7ef4473119139649e4000144e736bbbfb5b98e4f425640ce406e60fd6a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCE7P2400778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272e2b872e9d55045923f1d1847b3af823bd8437c9cf1acdd07562141210adce. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5AB2488665.
Paparazzi! (feat. JD On Tha Track & SuperStarO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb93a66d6343021ad500a0195ed3a80f8da8dc6d6ea4ee56beb2d3f9b94db1f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXXCT2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f47f035ef02fac3ac2535da95735b4507be5aba4be0be067b845bbba92992f0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXJK02300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0f0857a4cf3dfa16d872df8859290b72a244ac8f548da128dea8e735e1612e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXJK02300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8162f186ccc3dc728c453c5c2508fa027efb18f7d5590b8e066ce2c95c1dea1b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXJK02300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ea46d7012431650536ff48ef6b7282b53459682a8399bf671d50775020213b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXJK02300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d5ec5d23bbb0962c91a09455ac341ebb7dcde699c68b7b50c2e83a8564c423. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXJK02300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8384c27d738a1b9a5697b9de6f99456f0cd019b92a84ff7add9dd30b947657f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXJK02300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea61e7caeeb2ab9aa202c603e7d40fdb9af33be281a838f1cf255dc09a211d9e. 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/BXJK02400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe11fcf811d5c3d2435aeeb2eb6a2286aad1e76c42ea17110ea0b7872d9ef5eb. 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/BXJK02300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0f0857a4cf3dfa16d872df8859290b72a244ac8f548da128dea8e735e1612e. 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/BXJK02300013.