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 0x38758dfeb4f39155e007f366ccd272a256b549479e32af16c2d3b20a5013d17b. 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/88e9defa-e3fe-4125-b85a-95f514ece12d.json and https://artists.proofprofile.net/proofs/artist/88e9defa-e3fe-4125-b85a-95f514ece12d.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 0x512e7bb3086fb7e61c14a6927171c45a191ac6d548817dfd4c124049cd1ae3bf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM42K2157476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede91d1e03941bf0a6de05a40cdb480e138491d0a316b5f9d47f1756f8b1eb1c. 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/QZKDK2177652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856bb8bf12d8960c9a7495392d6683f754997afe7c932c8091fed5542d3562cb. 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/QZKDK2157264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe477c15caeb8eee608845dcded0c23e33b093b65444bdf00520382ae2a10b146. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZKDK2173533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fedb5e3593e4f1af92b15d9c40f54ff37ddd0c728ceec72ba5f81bf779a025b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZKDK2196935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe145c2cb7a53a503d14d673f6279c2e35f71e1ef6109c7f013dfe4f4ce890fa1. 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/QZKDK2178369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ac8db113ad2516e8fb7e0d590a3d3ebc5f6701c5ccb53aa547f52d13b90c52. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZMHP2019939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce033d844dbce9a9b742425a692d2981a9e7ae9fbb9267aa8141d327962b4cb8. 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/QZS632359916.
there's no light at the end of the tunnel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6f116eb3bbb3207881eab65dd25e9beaf1f5108ed14ba78061315787ff07e8. 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/QZS652292608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfdabeab65330b20a9ddf6adc694501dd99417014ee34f12d915f17c4350698. 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/QZMHM2289779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512e7bb3086fb7e61c14a6927171c45a191ac6d548817dfd4c124049cd1ae3bf. 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/QM42K2157476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede91d1e03941bf0a6de05a40cdb480e138491d0a316b5f9d47f1756f8b1eb1c. 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/QZKDK2177652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856bb8bf12d8960c9a7495392d6683f754997afe7c932c8091fed5542d3562cb. 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/QZKDK2157264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe477c15caeb8eee608845dcded0c23e33b093b65444bdf00520382ae2a10b146. 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/QZKDK2173533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fedb5e3593e4f1af92b15d9c40f54ff37ddd0c728ceec72ba5f81bf779a025b. 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/QZKDK2196935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba3c13f8a7a09700369002ad103654f6ec335d2c7a960cd3b8e88516807f0b0. 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/QZMHM2017119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe145c2cb7a53a503d14d673f6279c2e35f71e1ef6109c7f013dfe4f4ce890fa1. 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/QZKDK2178369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ac8db113ad2516e8fb7e0d590a3d3ebc5f6701c5ccb53aa547f52d13b90c52. 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/QZMHP2019939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe145c2cb7a53a503d14d673f6279c2e35f71e1ef6109c7f013dfe4f4ce890fa1. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QZKDK2178369.