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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac17d0bf85f3e3cfa378633fc8c364011fb98e9747302c0285946c3caf6b9eed. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df15bca7-2d83-4ee0-8ad9-b5b0e78bb45d.json and https://artists.proofprofile.net/proofs/artist/df15bca7-2d83-4ee0-8ad9-b5b0e78bb45d.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085d05e18bd8c78d12cf3edd7276e791929911f06595a95a1f50e97c3a771843. 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/QMF3F1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ba1d3df58372a73b99a9a1322edcb6623c1353ac9da4f9ab39a2043ab216b2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCACU1647309.
Ghost (I'm Alive & Breathing) [Slow Acoustic]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd66b9e62984115bfae9bf968c914791dca0007205b1d1c01dd8ffdcf645d37. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZHN52097063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0603706ba6975449319a44b2cc441d66e8ae95e49ddbd45c400af2e59486111e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6K2099159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d198ac64e83a96c511cd89f8ac4f80f726b3943d57ab3705b3d427243854b3. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/QZFZ62190417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d198ac64e83a96c511cd89f8ac4f80f726b3943d57ab3705b3d427243854b3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZFZ62190417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab1d6686ef8a8302bbbaffdbe4311b5b2967d368bababbb9977e80edbe5b30d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6P2246437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fe4266a34a9e40d9260855d3ba397b1c4f93c746afbcf48f4c743f47bd1839. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6L2225733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d1849305da8d1cbf1251a8330467359c2c6571c5a54c54b128897592424503. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZK6L2225734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8380049253c3701bde7b1e61dcafe8b66a55d2620fb9378d37b837fcd8544a. 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/QZK6L2225735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc214acbbad5ebc1673e2ba9c0feb576db34021844ce54095b093de6ece904fe0. 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/QZDA42499206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6403e0483d70e72d379aa91a976ed7e562780a7a07b76d2b0555b4435ad98f09. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM5QG2553206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83cf73c3562babd287e988c415a75051c7fee159dfab2eec7f49dedfe8e30c0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZFZ62190419.