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 0x5473b654d2f1279663a23233480790f5eddc5a04c47e91ce81624c97a88a9ba0. 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/b235ff77-244f-4ae2-9253-fcd2c4a21b63.json and https://artists.proofprofile.net/proofs/artist/b235ff77-244f-4ae2-9253-fcd2c4a21b63.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 0x26b17a39206add1ab092e8bb64ab480e7cb2c066827118a08678509e8625d5f4. 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/CAHJM2000002.
Gary's Song (Gary Come Home) [slowed + reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd192c75bd3cb4cfc3f87d36b0815f32d01a8a983a26322f4060e063bbbb24a06. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/CAHJM2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63bbf9c11e120d81b4e5c68c35d0e91c1d50c5b0d5e6d0a1872cbb37204e615. 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/CAHJM2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f3e70f7d1add8d404b4bcc7035f72c880e1e4eccad3e91a5c31c04e4cc06ab. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/CAHJM2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367800670186e995e4e64b57bee5b79c8bcbed0d3ddf0a9c32ebc4bba4e3eb41. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/CAHJM2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a06cbac1969c634db795dd0f30c86c58b8e2515b594019967ac44eb9aa09ff. 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/CAHJM2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca3dea21c46cc3d381e7451b04e753dc7b8f2db83102f8f9f6c55dd8b17791c. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/CAHJM2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba35cca18557dea85693f4ee020045cfe3dc138d454beb1b4d4f03eeef53dda. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/CAHJM2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4377ee47ff9df575f78012bef87f204edd2f7478b4a424d49365c90af5cba6. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CAHJM2200001.
Survive The Killer (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2181647ed333fba9698e7afd6c4316dbaafda9a4d0eab79fc366b1ca4bdaef3. 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/CAHJM2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc8208c3fac4b9b6b722c6bc9b05d6fa77227d712f82ffbe716e0f16f3ab095. 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/CAHJM2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5be44f0a6c7c260ae97a714d4fcb0a687e8ee0c77120c4392891ff84b07441e. 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/CAHJM2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7928fd6b550259c91f158de13bb4edbd3ae932d5aed080bc46b0553586d04f7. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/CAHJM2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023326bf60f586ec973c3e110fdfa6bb2252e1b791c19c7e22df2358c7855d05. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CAHJM2400007.