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 0xbf6571574855d3a1c0b15bce79e207eb9b3268f08c8a83b68037a9b79ed7f934. 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/d6708915-1e53-4f3c-a78c-98ea498350b0.json and https://artists.proofprofile.net/proofs/artist/d6708915-1e53-4f3c-a78c-98ea498350b0.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499261464a93c3190c405f826a8e536bd6113a1cb5cc33eaa93d3bd6b9ba4da3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US9ZB1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2933cbf5d04ef9441e331d15de2409c0364fdeac1d099fff17ea4438b1bf41b. 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/QMUYR1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dde91be5179337290894fa6b20d6b0211d7a2a8651571b7ffea28dd2fd97738. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/QMUYR1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4212bacb9aaca698188dd5c369209b835ae0873765d79cdd443680209cc4d3b0. 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/QMUYR1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde18b8ec9767cd145070fdf31b4f28dcc500efffc1b00f0b2c239aa91d28bb38. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMUYR1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcacbf70436947782a9fd6d5fc95a00b3ef42c173e6aa4abfbd878183a8b885. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMUYR1200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d38dcaf004c6a15fc596349114f9288023d788ff84833c2a46c07b514d4862. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QMUYR1200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63539eb7552f513d0d58c652eef1822a7ce676fe5ae7cbbf3053c9983b09ffa0. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QMUYR1400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee560c5bbc6e949c855f6b8b168a31cad4dc26237da7e3241533bbca327619d5. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:48:32Z), 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/QMUYR1400190.
The Show Must Go on, Pt. 1 & 2 (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c5b609a1d469dde9ffbdebd17656791c5fdfaaa478b70f2c8088acc64d9e9a. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:24:12Z), 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/QMUYR1600278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46410605659adc51c98ef8b2cd7ec0a3a5bef89d8e3ec63271f56c8995bff58b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMGB71600244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6d74a9cf6bd1d841dd2f4ea9e0f10f948dbe94a713c9ce29e6caf0ef4b9f3f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMGB71600247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5a17d3650accc98ac1c3709867865d2c40abdfa968879d4ab0a51fd8e500f9. 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/QMGB71600248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d557c1aff03f3b350aaaa85b511475b518c69d6ae1ed461537f537a1ef7facc. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QMGB71600251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9061424b916cf85aff6660c24101807e128f2bda0d79c16fcc8da7d11ccd8f11. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QMGB71600252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfefd430da09965f8c0cf792a5aa4bb5f997ec50498e07c0280a0738d318cf6. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZMER2138288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfefd430da09965f8c0cf792a5aa4bb5f997ec50498e07c0280a0738d318cf6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMER2138288.
Revival Recordings Presents: It's All Acoustic
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ea6458c69455215db0d64cc3f8321178d22f7082bbc8fb0519b2b01eae7bcb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMGB71600312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2992b134a51dd107ff5594c6e9c46ef02a80cc2dc55b765602ad3a09175bf7c1. 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/QMBZ92257033.