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 0x8bedd9685bb4087c477c78d186f5f2a35c0137158ad4a06aadcd4f1a33bdba8e. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5a5682c-7a9a-42a9-b6ba-fc6e2cdc9c94.json and https://artists.proofprofile.net/proofs/artist/e5a5682c-7a9a-42a9-b6ba-fc6e2cdc9c94.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 0x6faea986fc4028ffffde4e1e91a67d01cc9c50094c378f2e750cc2277118a4e2. 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/QZNJV2100941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecdf537b1e0bc99164d36fd1932ba2a2daaccb2aaca45e8b1891e0093fefbf8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJV2100942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa181ce219a8e6ba93cfaa44e37bedfb62c2fca6bdb266c345e18380b545cbf. 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/QZNJV2100943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50d259da594e0b5365599fd2a7d394c96f4491ef57195fc27a85ae48ce224b1. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZNJV2100944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a364f0582bbc9e54f87b35c726b5f516b94d61559a24ed4d023aa3bdc958d3. 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/QZNJV2100946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e08616678757739df7ea94b3fd57da9f0c214c7fdb028d3227e617560f6294. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNJV2100945.
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 0x820bf326536ec0894ceec98142ecad90bc18c3818242a986aadd1c828055d3bd. 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/DGA052318226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd64ce14259881b8c9a844a7ce646ffab4e485a77cf1c5cfebe6359b9616ae7. 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/DGA052318227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff54ba6523d771c0bbaea4dec1417b5a2943a62f89b3c1dcc2a226defa7b026b. 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/DGA052318228.
Last Night I Dreamt That Somebody Loved Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763e691bc6c7614ebbb7c2250066aa5e6410bce700fc9a615fe9437ef7d813df. 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/DGA052318229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b87819481d3f49fefe3f2d396f064bc712ce4402a778fd9359d098b4d9eae5. 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/DGA072200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed40d58f61fae014b5b0c2d7ba3e02fa99c936c9f16c56cfd98772d78d75560. 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/DGA072200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9334f7eb3c7f49e831f7bc76c8fb7fd9b0e05605074073a26b0993fc051aa26e. 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/DGA072200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f3705a2ad60d9f517408a8e4fbe5ff5d6ab0eea21134a057bd1dd41d6775ca. 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/DGA072200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161bdb496e85f1d87e6d21b2c3d2de07cf832cf391ed6817d01f528a4b8f377f. 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/DGA062241638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9810fb0e52c769fa8984210cc2aa9b45ab0e50eac52c2c27f638de33a644078b. 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/QZNJV2150222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4a38da229e67263695fd244cfd50165676c46fc7d56c44d7664d7e80824615. 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/QM4TW2573235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0849ea8ed0f9423313ef50f40130dcbca7cc293485a731bc8efc1c91daa0cda2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QM4TW2573259.
The Pillars Beneath My Feet - Sanjonas Doomed Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c49692a0935f66a84a92330e9a07675e310a0d4243638df3d0139fe1318447c. 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/QM4TW2573260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a46232a9fe072ef2bf557e1544c787b5636b52d1f4b3fdff9598239335ba8f. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QM4TW2573255.