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 0x3a7de422c1f311e1b5bca459c0a7a6f3d1e6cd1b392109cc0f515b280041234c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fa49b5e-acc6-4cf4-ba54-cd6aae5cfef6.json and https://artists.proofprofile.net/proofs/artist/1fa49b5e-acc6-4cf4-ba54-cd6aae5cfef6.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 0x6abd8d78db13de4c90628ae4f95ec40257ba95242823b21b66bf355017be0bf8. 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/DGA052396798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b370c742831744513f43f2c9886fc6cffdd1c92fce5fdf3bc9574c30b640de4. 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/NLT2H2300469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7c87dd8b0a3012e972813230c9510e0a5a2c9e64d22f8b765d9eea7c911ae4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX8KD2398422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518059b7e2c9fb43a9029144c56c13bebadc41b539e46899c1352353fd1644fd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22288723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00760bcc179de526cb5b21ad5f49d696be3f46e00b4574fbff7298adfbe04a93. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6N22498769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fcd1ba80ce6a24b95a6fb6fdccdce83f82cf8cb8e5a8a0fabc4e8abbc1250c. 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/QM6MZ2463272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d4c404dc51fe8a7d23c8c330b1617f335d92b35f96db1cbfec2d49a63b22a5. 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/DK4YA2400180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df23d39bd120586951a871d2ef6634080142df690158527ceb9999f6abe514c. 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/GX8LE2473448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6078afea9d30abb68eb1ccd51e740dde3b0cb4db722029804d0431140f12f415. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX282486640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34eb11cefbb487ea6eb0ee5b52e8fa802dffb13b9c1e4978866a54c03deff5b1. 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/DEUM72402783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8886ee3ae6b950dfe5a8cc95fc268858dbfd39e532a018c6cce0df7b39a83d4. 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/QM4TX2408547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f6b1d9f8f3a5002d64b52efc542ce198ada5a83d13d946d75671143b017289. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN62465882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d22679e13bdc6bfd91a49b90c506bc48a9fd59e4389f2952e97d97c36a5226. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEWM92200830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d40f1afa030dfc110e61f81e50e07ca6861ca1cb00c203a7dc5ab18ad05a10f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEXW62400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b0728b0e203eac4a842a5084985051c9c872d9a19a1c83f25eb61efb8863a5. 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/DEXW62400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b12f8c3e457a8a5b576d7fd1af20736a1dbc882b7e8aa9069bffd296b60bda9. 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/DGA0H2300565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32e8f56e362b4bb4b1784ac75ba1d9d9d800deb27ce0850a93f031e81937e03. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX5MX2311971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d340a89abd1d989a25c6c3757e21bdc59eb8a9ccb2a014d5b87ed5047ff5143. 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/DEUM72310523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa625257e8292f1b5fa5c663cadad55018bafd0c4aceb5e9a992c8a388f040553. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2300639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600ce7b873e585029f031702795038361f45411b2b070687e0178183cdb57720. 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/GX8LD2323065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f0105ba44411534974523d27933fc8fa6b83eabbef68c429b13631c6b503fd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLT2H2300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95266ee492a4c5c2162343816836ea9562a8ac96ecf278369b92af3bbd9a918b. 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/GX89G2316871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cae9d80a32408bc706c5b8b7b481e923834c009ea531f5879e990d63f94fe8c. 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/QMDA62225489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd406baf4d6584e353b8e3d56918dc870db4c57c248f535cbbedea1a09fcfe83a. 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/DEXN92244379.