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 0x20fab4e0aefb839ee7d98f24d8ed8456a2c6cc9c0f1ea605b6268130682ff1a3. 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/3ac79425-e46e-4e2c-9731-b970ab8376f8.json and https://artists.proofprofile.net/proofs/artist/3ac79425-e46e-4e2c-9731-b970ab8376f8.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 0x912817fbac0b77a143bf70314238ed9b2f5bb4a5bfe513ade316ab7c499b840a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZFYX2071650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f58e4b7ab15c9ca059df670dfe2add0d520bc84b9b2476d7eb290ba587ee0c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/SGB502205332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be9ab6460703144d002872761350b47e454e129408f8c78eaa9d7af5f3e07c9. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZNWT2174153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fc92179ff611218210610fabd5f42ebc9d869ac35a7c87e6941d899c5d8eee. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDA52007114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1fdc75a39b583b2707ae6d803bd64b795a5994eb38fc86303f111a89d1f8d5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNWY2067656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2d99ecb06d4898ab1a6921c07da3cad83272bdf06f777ad4a5eebd637693c4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/SGB502205286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be9ab6460703144d002872761350b47e454e129408f8c78eaa9d7af5f3e07c9. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZNWT2174153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226a69b5e442d41a4a59fc020f40e56fb9d3983b4f959259b16b665f190a4034. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IDAA22200376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec1bef5b5ea74d9a403e3f27be9d45beb7f7d815d60b3d553dfdb16aa35a273. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IDAA22300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631cf4f1e668bfcdf7f60b940d844a7775fe9ef0e0eab5a031778c20e55f7abb. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/IDAA22300269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03a0952acb9f037358bcde939b2175ff4e81dfe13940e310053e01b50e0107a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/IDAA22400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226a69b5e442d41a4a59fc020f40e56fb9d3983b4f959259b16b665f190a4034. 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/IDAA22200376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7a7acb057e6c570d290ce74af3071b091079dae048e186d228b2ea1a2ae1e5. 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/IDAA22400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec1bef5b5ea74d9a403e3f27be9d45beb7f7d815d60b3d553dfdb16aa35a273. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IDAA22300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5d229c14dcd6a20832c0721ada494572f18c0692d17da988d6fdb28c4c3f52. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/IDAA22400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631cf4f1e668bfcdf7f60b940d844a7775fe9ef0e0eab5a031778c20e55f7abb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/IDAA22300269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107c8401ca0d32a6a6b280c0e3abcdc56de756f25cc27457fcb3e1beb821ea33. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/AEA3A2597510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49ab42896fa1033a3729f31b002621fb12aa065ed9bab4a4883503c9bc3059e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/IDAA22300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd568400bcbd4c2d5dd193458dbd90ef184427be3ba8f2f2a89714c8ba5f8636c. 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/KRMIM2513148.
Cinta Tak Terkalahkan (feat. Febinda Tito)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3b28c0a277b8d53471a095c3785d1c3f4c64c6733c9baf81e9bac85a66ef48. 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/KRMIM2513149.
Undying Love (feat. Febinda Tito) - Sped Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33d90a3c914ecb283a7317d8431d09afda1f1241e7fcfde6c4529c7a0923475. 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/KRMIM2513151.
Cinta Tak Terkalahkan (feat. Febinda Tito) - Sped Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3cb0cd434dedcdb97a1ed74a0e14beae66e5482dc83f8d86972a09f155e520. 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/KRMIM2513152.
Undying Love (feat. Febinda Tito) - Slowed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5d12195a8307a22af076478917ae585086df00261dc261087d1f23415ad617. 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/KRMIM2513154.
Cinta Tak Terkalahkan (feat. Febinda Tito) - Slowed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf387a39830ae823327dc6a592bf95f3ed79e0a635333aa8524ece640bab69777. 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/KRMIM2513155.