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 0xddf00c24cb57e5eb933b16a55dd6fcd6253c47c5ebe6d275b9ab47a07b326a62. 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/a9ce490f-f610-41a0-a197-9c47d0ad1688.json and https://artists.proofprofile.net/proofs/artist/a9ce490f-f610-41a0-a197-9c47d0ad1688.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Solo (Original Motion Picture Soundtrack)
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 0x081528280237c958bb5ab7e4adc0ad45483bea0cc583f6d42565276e26ccfb25. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/INS231734400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddb869afcfe2dd5269ae0106370f33f9ddfe4da225222bd2726a9d511e500e4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INS231734401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a0ead3bc795f8d1664dbeaa98d3e8d362e8f9664bd1636384df8b4fdd11b74. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INS231734402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350c1d91d2e8afdd40b68b577ed6d2352c86cf7e57aaed97f679c81528967338. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INS231734403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ae2906219fded118f3a982997ada2928a6c1ac607ab15ece4313446cda0661. 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/INS231734404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3257e52f7609f42a320c95ac2f0625505d19f8e55d14738253a99bdeb90035af. 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/INS231734405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32cd9dff7881e93c572a609782395be7f4fbd9396b7944ba9dee64d2940cff8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INS181101110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8e77b4e13757b224979c0f28e06dc22ed0753e053d4a814eecac1150cb7bfb. 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/INS181101111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b95c17aca606f208915dc54b42d6351192fe7d8e1b627082232d5f07b33b68. 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/INS181101112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daa613e290729a08dc63e304f56a6f30e6e87f49da1d2ff0b508542e3c3a70c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INS181101113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec5503a58cea0b775c9e97f479adc7357bce68969497943efca60dd70e0411e. 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/INS181101114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8987e1d769e4ceaa1e27e0219258c5163dcf75c4d2f6912f4ad7fa663f0f440. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INS181101115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401764e0fe90148ff680a18b0d18a8defa921e633b1168689947d3d5f3736893. 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/INS181601548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85ae31ae5c38e6115b16d943e2268baa11a6ae81d010120aa84930f0240f97b. 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/INS181601550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10637e2f18a6da0f781d7501b649d6ca1e9fe5fb33df4379531f82be249aca1. 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/INS181601551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657555dd80d65d188ea9b83838779d51716f8e1b7e3ff9c699a96b0bc5c0524e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INS181601552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4657770342a327ba93bf9b98cfa5b934cd10c21e2c41e957ce94d3dd40a334d6. 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/INS181601553.