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 0xaa53a4786c0084c370d92a1434a965da30a775ca783ae5bc3d3b9aed387112ed. 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/ce0e3fc1-e5c0-4307-b947-e56ccb93bf37.json and https://artists.proofprofile.net/proofs/artist/ce0e3fc1-e5c0-4307-b947-e56ccb93bf37.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 0xc2dee9ba3eba780bca45edc8ab6440b961df2b9a89c4c42c16f959479249f3e6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:59:31Z), 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/TCAEF1979254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa443e3ac5ed8ba0894411f30ae02955301c0b591b5d3497616ce7a2d1292dfda. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAEJ1952132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe54b3cb330ce9ecf5085c79cff7b88cedc5f7211f3486401597017bacde83ee. 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/USUM72101270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a20cc837b6a76c719d2ceca55a8320e30bd3d69ca8c36652b0e44dd91190eb0. 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/QMGAC2100251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe516ab0560e81e287816c109e0175f3b912d380150879842a3e03108021cd89e. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QMGAC2200122.
Better / I Surrender All / What A Friend We Have In Jesus - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef46a0e3cf99f7308f0080f318bb71bfb200f454d17e40a49772408c9710ddf9. 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/QMGAC2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2528d8f46e390d550abf332de1ca7fdde8be9a69e56f0880de125cff9b8448ed. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMGAC2400335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e39afeb604fc3d37d7f2ffc4aebed61f9e6643410e39302a5706b8a3d7cda3. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QMGAC2400336.
Better / I Surrender All / What A Friend We Have In Jesus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe54b3cb330ce9ecf5085c79cff7b88cedc5f7211f3486401597017bacde83ee. 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/USUM72101270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3347346a764eee8a0245d794af4063d1fd7092a5f690d2bccf4bb645161e4118. 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/TCADW1814530.