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 0xa9922a095d6e78e32efb957cf07a004ae46ca43fec596c7b078b68b21ec3a9d9. 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/78a178ad-cbe8-4655-b5ee-78bcb6e621a1.json and https://artists.proofprofile.net/proofs/artist/78a178ad-cbe8-4655-b5ee-78bcb6e621a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Drift Stage Main Theme / Exclusive Coupé
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 0x65baada9adc689763227c8e2b8657d9072a9f49cd725da1d736676d6f6b97063. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCACS1677942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1c36176a186bb534263f4c5ba91a7d6a20b6ab91d042dc5e23ef0fb54443d5. 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/TCACS1677943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d686d6b9f24be5586d00cd1f393b8abf6e97db91a450efad93ba6a63fcd412a. 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/TCACS1677958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f9f37f75d983f8c01ce758fdc025921887ffff4d00e5e82da6a6c6d2cdcb63. 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/TCACS1677960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f103f8b723c5e71cbbda75715494c0142199e039112499b4a7eb0bd58791356. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCADE1795153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a241d708859330cafc43dc5c4c56a10e0091de2375ab93d637790a8f414d6f. 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/TCADE1795159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8e1b2569459b404aa767d9c20635a26376e537b6ce24e69e51cf3a17887a2b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAEA1829546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bbb6909effdb1a93032306f8e89472ec43bd47a8a4f33df1334885335003f9. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAEL1917614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67627aaf0b0534eb991148a272040543c2d112a6ea42db9572277506973506f8. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/TCAEL1917637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b487353f711b527711aa1a54f2d37532bedfed8ccf4ef71bb9c2406e3e0a453. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAEL1917646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f5e1e88fa8e5d98e84021b97883dbf33547986a143269879902728fef38a16. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/TCAEL1917651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb07fd00ed35f08deb6c6a7283d59c1e2f55b0030d26190cdd90f3f378cd0a2e. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QM7282412426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe104d65c295e50443f37d1d8f729cda0b845c4560684b7cb7cab84e6cf3effa1. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QM7282412435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1ba732c75c9fa7c5c85d077f5770fa3ede20fab008a30dab442c8d5aa3a996. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM7282412427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e03fda79bd16a8d5490706cba7feda34537601f3274c25d1ba529fe787f5d21. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QM7282412428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1975412ce7c516d226c8b22e2a8ad07ea1e57c9326ed445ac3c137841746ac7. 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/QM7282412432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd051c06a48bcccd5b89ded72d1d61b392a5101d53fea95dd2cbf0aebfbee3b8b. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QM7282412436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7571b5737c9193735b0b20b363ea91f343b7e8d0e6313c20e2094c81a0b6ed3. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QM7282412434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297f5944e93d1ac4560ea2662aa4de6669748f191cac90800a39746c1f9067ba. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QM7282412437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffbb0bf17cddb73d29909fdedd9483102df9a95c3e3a4c975977b9f1539ca7c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM7282412430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6f48e502f7320fddbe8d055e1c727b3e4eb293d68b21e5106ab5caee953efc. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QM7282412433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf20b57b5c5631d1e8e3e8fbcd1c365bf88e49672ec7ad06fa84242ed82327a0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMFME2531537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61265bb485f0143ba50f5ebff1ca6f1edb677662ad116f4bb7b6d4c702504599. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GB8UU1700029.