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 0x736e9108e660eb20a93a6f8f6669cd6bf9a3aa5be7708dc04b99d6976de67254. 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/65ef8584-1b51-442c-8515-f280e8a598a0.json and https://artists.proofprofile.net/proofs/artist/65ef8584-1b51-442c-8515-f280e8a598a0.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 0xd083cc5ec6c1f1a6000b857a0d08915003c170a550578dfd108e2fc505e34ce1. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZTVM2327421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5868bda8d04e0b81513aa166d92e5831c6787307aface23015a44fbd34f085. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZW9K2335100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743a022b69d5ceefe32ea84984720d287de05b9ecdd6562c1d54a1cdd3671e9f. 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/QZW9L2335987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093b4a9b54e13b2e4fcbacd4579fe30ff5ecdd1c13191684858535b46acb6920. 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/QZGLM2485406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa783622b8c70a7effdee6a08bbd4893328544fdc48aa7de0b7bba4b08207910e. 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/QZGLS2460797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d1d30b95c7355e15dee2119f35c644df61af6f3a4a2e892a2cb2c536ee434c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZMZ92439398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432578f1da872c44fbaf3b9e8f6f2a1551d802060c825984a89aca66e74e0c26. 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/QZNJZ2462581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838149e470e841f203dc7dae5215e51d829802e451852e0c448237e6c19d89c3. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZTPX2437707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29191fa5a60944f75a00fa746cb6aeab8c3e6d1d89e291fad38cd0845ca5d6a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZTVM2479708.
Midnightcoffee Edition (Remastered 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c478d1a2c11eca2f8bfc8c7225fb288a52a1c01c870c8dfca41f30ae8aaf67e. 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/QZW9L2453015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7492e5c1b7913b3587cbb0a226622e7ff8955aa9313267c4def560196aa48710. 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/US7VG2540837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7478a6b87b18308923d1140c6b5a0144f4a82076b55d6b92677c8e5710f45e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/US7VG2556308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778d84bf3a27bc28dea2ec5c0194540736436df50eb0e37678328e0a5c7e0e95. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZGLS2575023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb3eb16856bfa8209710a052a8e7ed06168107b2f320b45df04855265477880. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZGLS2575024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8baaeff0e54e1adb743a2a989e3172904f43265a0ad2fa1d74d279670e8f14e. 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/QZGLS2575026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccbc6f652aa685a4fd3f6b653a5d7d81cb879c59852d83db4ef6019632d29bd. 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/QZGLS2575030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96dc37b3a2a00e52a7e82e368cf7cb56a873160ac47e56184faaeab40f98f66. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZGLS2575031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e5251e2d8d69a198458e05dbe1418938c52a06388acefd97a559e4ec9ff00b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZGLS2578927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307275c53226a56338777360b5adf453745f105a1280d48ca6abedc3acf68883. 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/QZNJV2515232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6265dcb78c4409a82d7dbe975a2b0274105942d90290aa46b62c291c058003a. 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/QZTPX2524079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2271bce6089bd4ae01daecac32b31f03aa29c01f7a889d72425ddaebe73490b7. 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/QZTPX2524001.