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 0x4c05eb07b732d589f566db63197f5021e2bf898a080f51de823202bb3cb0ade9. 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/d630b48d-f2d9-48ac-be5f-b2077952ec00.json and https://artists.proofprofile.net/proofs/artist/d630b48d-f2d9-48ac-be5f-b2077952ec00.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 0x850def4e6ec00c1e42df35896efb5e4e1c58afba74285ffdc3cc96f4dbcfe486. 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/DKFD55742002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ad645c530f6ebc9d6c6f65d46a55284541a5eabc0845f4c5ba98ef5c002beb. 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/DKFD55742001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da09c81d9c303e70dc528a95c07f326b5c38ca5e205955c3839f3cb39b5d2ca. 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/QMFME2332020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab2b262401109d407e192870e912ec5c9cabf98b9a8bd9db25aabf117e61ac8. 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/QMBZ92382201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92519095d53d924b8f496a57f32139f018685c3fa55d1ad15c5f068464e5eb1f. 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/QM4TX2363374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3e89136cfdbe3a88b62249d5ab32e78a54cd27b86eeb6e5980c75a7386e5b1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM4TW2247164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b71f5887c8e2d1bc5c1b7e44dfe19f741807092ce8df9a23af47cad28213009. 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/QMDA62139702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f5d4953b7f98515bf4f715dd68d7f2870e9c1013e4be7bcd0bda3900591e6f. 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/QMBZ92177731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79d7885122659fc36883873f4035eb86edf564c5b642021acff30972f761e69. 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/DKADG2000390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17d9f1069f3dc0ffa838b51389a032a671491b4b6fa0c554196cccb0a97083a. 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/DKADG2000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d4048a7c928c8e099e90e8bd4bff7c5cd1fdad16ff2a57dff5373386e3bd33. 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/DKADG1900362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3b9a335760477974f934d5186d6e70240d518e5cd2130793b0b65d850c762d. 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/DKADG1900242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dd7bee90bf59aa37b90d834b77dde6cd86ebd98903f477736016c6f9e3db4a. 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/DKADG1900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299d7c920a776ce793485ab54af8d98aadbb280f7a3997e18f651837934557a5. 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/DKADG1800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c3fec62ed25148fef4d4ae0a1daff920819fb44c78d2e0d2f629846870fe0f. 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/DKADG1800283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9b1a1ac626cdbd7c92a7428c73116e937ee15240a8dbd61b1fd816cdaa97d3. 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/DKADG1800442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dde575ba0fa2b3d4e800d0253583bef3311dab07ecf8f9e0bacf5365d99ae0. 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/DKADG1800721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf191adc32bb045f6a9b5f861822557f80a8839f9d9c4f09a18c4e62811b08cc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKADG1800724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835262a53917cfcedc4e72e8ca324e32a003873fe647889e90d44c0578cbf5b8. 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/DKADG1800501.