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 0x3ae47ba9aec52a51c34c97a8417cef5249c631f4b84b1863ee22bd92c82101b3. 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/df576007-b5cc-4072-b004-6eb58e7a1b4b.json and https://artists.proofprofile.net/proofs/artist/df576007-b5cc-4072-b004-6eb58e7a1b4b.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 0xa32d80425e8d2375ec2d4e5656f6696811a789bc281f2ec0211073f8f9ad2e4f. 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/FRX762272338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80737d2915c7fb40ce42c4413c050e91d0df049213263248fc24778fcc44d18d. 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/DGA0L2384030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a12b5420042597250470f6c84495def26f9b2088c8bc019c1113c69dd0765f. 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/DGA0P2383174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea647f86695d6d5cd2701b255860b1108b9d5e3c6b7cb30ce030f30f217a97f2. 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/DGA0P2383175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f75ba1d6649604a0678c2ef81f0f60aab5a76075de1b281ae41c9b4f410a750. 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/DGA0P2383176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710af477db38332c698b69990895b229d858dfec67bf2e44fdcb9c87d489bdc8. 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/DGA062347133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad914551a9b7ed0ce86c588aa7951bd5c18fff16de72cebf78e9465dd23a96b. 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/DGA0P2383177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767a378d6c7a9090693d1bc47d1d77466e2d2f4ad3e63d2f3bb9cfdf30f13f1b. 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/DGA0P2383178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1575dce870cc1697405e76c196cb2edfc1cb04fe3208fe4159c586d2b55b9783. 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/DGA0P2383179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341fc8675f535697ebe75758e470cf15f1b165352c8ebe58589ef1a5037abe63. 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/FR2X42137441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8876c50fafedd784fdf06143782c05320b97951d739c77774fcf9a1c030ece4e. 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/FR2X42137442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a57f4db197f2f8de799c4c62068de4d574db7a3062659ed9604f5d2f8e0453d. 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/FR2X42137443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d0677a25962b06b0811be6cf1eaca50b92a5d277e34659f18b7d7a2f71cc5f. 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/FR2X42137444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce447461c89ba6ad9481bea75a2f4a76b05d0a4468b0e9f9bedbbcd35fb8474. 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/FR2X42137445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1715e8c243c98203f7d112ebc4f5d7f1bf1a3dad202bb4afe79091a50e58e8. 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/FR2X42137446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2444213748610ffae04fd22b18d69fa8df484ba64d099086012ee279a1c6554. 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/FR2X42137447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc5b92e266dd8015abe583c8258f4ccee7e374fb52ff9d19c385303aacf7a8f. 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/DGA062046426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80737d2915c7fb40ce42c4413c050e91d0df049213263248fc24778fcc44d18d. 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/DGA0L2384030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710af477db38332c698b69990895b229d858dfec67bf2e44fdcb9c87d489bdc8. 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/DGA062347133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32d80425e8d2375ec2d4e5656f6696811a789bc281f2ec0211073f8f9ad2e4f. 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/FRX762272338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175395eaba4f78185c8838fde5986173303a6c12f03fc632f371a02c71b6b592. 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/FR2X42276856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bb6e589f1c305b1bce71d72b92bbcfbe2ad8e6dc9e6b9e78e18aeae8b426b5. 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/FR2X42276857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2922ef99d37cb52ccbf24bb4a4cde8808648aa0bee0dc2db7e76fd84ccdee47. 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/FR2X42276858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a16f4f21742fa9ec8fa2d5a08ad3b44fe787b22c04ffe8fe190d5d2069bcb2. 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/FR2X42276859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d1d2c6f2c59ae149aa8f9d5fec5800c99b4844479dba7b65b32da3e0c42c42. 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/FRX762189746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341fc8675f535697ebe75758e470cf15f1b165352c8ebe58589ef1a5037abe63. 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/FR2X42137441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc5b92e266dd8015abe583c8258f4ccee7e374fb52ff9d19c385303aacf7a8f. 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/DGA062046426.