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 0xb6a2b05709f01e10410a056747cb49ff9332e810babc9b0bf60f78252b6d4f6d. 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/6e46a8f5-349c-42b4-a35d-6015e1d0d814.json and https://artists.proofprofile.net/proofs/artist/6e46a8f5-349c-42b4-a35d-6015e1d0d814.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 0x772010013b3d6ca7d2bc433622960292e8eb5f0e63fb2ac01dc92fb458304162. 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/DEZC62446749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04dc57037712311c1b4aaa021175ef94c9face0f25df80591142e3089770b13. 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/DEZC62444304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf6dc8a6e0e56a2183d6864b6f04b00d9a92dceee40c8d4349143922ce77cf0. 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/DEZC62347402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329a286993fa75986513781f2d7516eae9b61fd427dd7cbf2d20cfac36fedffc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEZC62342096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7941606497d26b4e08b5b3564bbe4d54dd411f09f06481a5bb626335e05a5537. 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/DEZC62290959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a2e211ffee735dcdd522865741ce725fb7c2dfa1d706179d87415cc7934b4c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZC62293096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426d706b3d37d10fd3b8e63b90d9dddb190272af8adee8e721a24203d564be06. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEZC62293097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9191bb51924f2016aafc55a1a9faa315ea98ef82ebe1206869cdedb9e432c99d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZC62293098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf83e82b351feff352ba78fef7de01b71d8314529a4deaa54acdcd6c9d50ea5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZC62293099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7941606497d26b4e08b5b3564bbe4d54dd411f09f06481a5bb626335e05a5537. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZC62290959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8719343e655722fc9b237c83a579c36aca7976d6f83c045ce66c5abae7a5ec9c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZC62134273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3032baf5c3d98f0b847b8785d96ad26121a7e6cca61853497ebeb80bd15c96cf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZC62127952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ce1ea4053976354118f68a2c7ed91d7a3e6af430a427fba7a19763db23f396. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZC62126640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4181428dae5f3d2e8c4f6a297489e7d5f2be2bbb7aae37045236dc44e9d43f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZC62127954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30aef879bffae1d8f8bcd29e5ccaef8b8bff1751f65edd7cb9c93e65150ecc8c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZC62127955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ce1ea4053976354118f68a2c7ed91d7a3e6af430a427fba7a19763db23f396. 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/DEZC62126640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc27b0af939ceada67d5d3ab690468cbb4b30339a7ecfdd6450ed36817b4f24e. 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/DEZC62171115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa258dbe4d55b43ae920b480cfa9a22d67a1c2d7107ac753ccfea9550e690aeb2. 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/DEZC62164732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a86fc376e7148118f103106b398916133f7ca171c59e4efa5a6d528059b22c. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/DEZC62050905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ce667a868bfb353df0b469eee67d15bbd9f1b672acc9b5fd3c26903fd44749. 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/DEZC62050907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf39abcbf1ee6a78b3c8375a40dea157f778735ede84456fb2f5b0ee2ff34b1a. 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/DEZC62050908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7a8cbd3f5830bed27c649b37d96d5b3428d31c40668e6e373365367e417781. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DELJ82044729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63d13220a529bca31e9bf5805b6c320e4cffebfb2d72b4c8a21d56b75eff020. 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/DELJ81967191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b13f97a9d3853a9464130070c7d523d95ff8334864c109ed0ba79aa545f5fd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DELJ81953099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a83f2d3a58a97af885babff16e9e4dd2d293155323ac5287e93de8b61d0f87. 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/DEZC62580780.