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 0x654a76ae86f49df1c91c8d61861f2d7cd1e81f881d16277251357918f6d6aba3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bea29e4e-6293-4ec6-b2dc-99718dc74fa3.json and https://artists.proofprofile.net/proofs/artist/bea29e4e-6293-4ec6-b2dc-99718dc74fa3.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 0x1ada3df31077b78ca75645e67f0d1c51aa5059a97cece9808831dc8285943d60. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:13:00Z), 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/FR96X2525666.
The Best Of Andi Meriem Mattalatta & Rafika Duri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3345b90095384f227c3198fdd5ff5efee1f70604e306757e887ed13a34ed021. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:39:04Z), 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/IDA181404401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffaf7ab4f779157915c8421364a1abfb3caf65ed2dc18c533422dcb0f815645. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/IDA181100617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c6d85a9d095a5fda05b029dc7d152132adf94549a50b15ee23b30e607c05b4. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/IDA181303058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55329072d4557c589d411ffb7cb4168f7cf4397385d886e559c6de808bdb265e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:22:43Z), 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/IDA181100487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7168bbbbcad0380cfe1f1f99d0e2ba962b361f1dc323eb5157db3bc62cbd91f5. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:48:49Z), 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/IDA181302358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae58063336af2b4107562fb2aa5f49d9097a6e8391e3832cc78caa03102d4e5. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/IDA181414417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55329072d4557c589d411ffb7cb4168f7cf4397385d886e559c6de808bdb265e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:23:25Z), 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/IDA181100487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06598f4bd98ad79f4c62804544ce7b248f65e0f97ae418fff74dbe480a689c52. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDA181303059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bb665fdc54a8db8f17535fa5d20b7c86173de259c298d73dc01ace8abe21db. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IDA181303065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd76326ffa39ba49e8bb5a0a0a23c0b59d77095da5981781ac2ce0e155c4d2f9. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/IDA181407039.