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 0xd9c654190133bc4318d730a2222aeae8698d7d56af8526162afbd15f7eaee3b3. 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/55c8d788-a2fb-4118-a5c0-ddb565eefbae.json and https://artists.proofprofile.net/proofs/artist/55c8d788-a2fb-4118-a5c0-ddb565eefbae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Never Gonna Leave You (Joakim and Max Pask Remixes)
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 0xf4ac481e9dc9f1a6c0a7a5c3e04d1c0cad6da1a14c311153793ae29e115d2ab5. 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/QMLLD1900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29547c6ad52de419175f43ab818a7a71677a07e4e44b68ec479d494bd19a2261. 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/QMLLD1900052.
BD Experience Messengers 7 (Evolution Next Step)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034b4d795d19f29ecbe6c5ce8566c5ddc58dc60b497e40e1c03cb0d020f16739. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMLLD2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efdbb2f0e90bc7f6cfb7ad696d351cc0f96767351be5bd189c10a2b1a155528. 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/QMLLD2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4594580d9faa3f587b365894833a56ae4e18d371e538169e3676d8e8684d8a76. 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/QMQ4T1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c7379a5ff092f00a0fd936de4a598448dfd87e7296cdfeba79eafe28c349e0. 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/QMQ4T1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5882b92322c348e26edd70a93237bd5c819e4f58852149ab7baee14aa3094d99. 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/QMQ4T1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdebbf86fade04f7e14c8f0c4e6ee4c3064ae3988d6113803307d5bf265e53e. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QMQ4T1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c3ddd84bcb5f8375231082d999a12e6a1f55d730280a31250dad687a508e3b. 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/QMQ4T1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9cdc9a8e4516b5f2e562ab55328267c0efe220dd6ea57432bdad1e1912f042. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMQ4T1200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbc4589c74d46d8a64383075b31838eedb0056416706a9189b794096cb93299. 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/QMQ4T1200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9333e5801239b25c2aabeb27b3d54e26c5114a7b425ed0a4e9d72a9b70521f. 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/QMQ4T1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0c427ed445b84c173c9c64017f65ded50f0324264f1d90c301175bbdbfe314. 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/QMQ4T1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6627ab9fa4d11572ca28ec6da78f931741faa7fea3da1ad5b957d5b0387d3c. 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/QMQ4T1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f08ebc9b6e85b7b6c4d583d629aa8d87ca810ecdbb38dfac3986ac8705abb37. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMQ4T1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497bdf5dddf5413086b8b75526a11c202e1e292e4b419dc04b1e94d20daf8a3d. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QMQ4T1200007.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch