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 0x9607682cc04186a4ef2479e5217f53b1a274f636aa407ea2f53432f19f02f56f. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2221e357-1368-44e4-a113-6b7d13447701.json and https://artists.proofprofile.net/proofs/artist/2221e357-1368-44e4-a113-6b7d13447701.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 0xb730cfc5a7ff86725eb2dd96b15198440df50c6568ea68bb7768cff00110cd22. 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/JMA271805680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a16210deab4efe5a46410c789d68bfe232cb88750e41cd0e7b686cc6a1619a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JMA271805681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1f1048c67ca44eeaaa134e3436e414e83179d1705e270c72539ac0e1a1170c. 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/JMA271805683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9870fe1d317f974f9475b1cdfbed029f05a7808907f67f65a7515a18bcfa456a. 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/JMA271805685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6591773568950424eb30fcab2a46a600ab3aefb35503080dbc7da97205e8c6. 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/JMA271805691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa38a472be2def6fc8ef2d813a1b20619321f540fbba8064cf5249c274823cd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JMA271805682.
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 0x11484571f8f6272db7427195b614c43db3f8f30a71d3bcbbd1bb8c6aa09f967a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/JMA271805684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5a2de6b23a9535a82ff36d9f13ab2e13d0d85162c13ed37d79eede56126186. 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/JMA272005112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08be0ad430f5955c05d69c67e625215bccc06bba61f914e07859398d0d3fcddf. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/JMA272005113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc6d1f527c08d8d4147838f394c56ceaf06fbb4ffdc01ed9a1b208a868018c0. 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/JMA272005114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf614903b5cd73db03fd373ff8065c45ad0da0294889852a38794f6b10ced7628. 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/JMA271908137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b33542ee09b65c27ef116a5825caea25a3725d4e4eb81fb50dca8be6e9ce6c8. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/JMA271908136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e9efe6d53df511de7302d0392e240d300b8f0219ce78e264049a51fe88ee42. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JMA271906876.
Roaring outta Babylon (feat. IJah Salomon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a8c21aa78e3eef694e574346a8e26b06dd82b6c3aa1cc9ef632b427558f30a. 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/JMA271903350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f3b51236f13464f3bd676442c000fe9a36853542f1f0f8664d98dd61a89003. 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/JMA271903351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519019761e16590b3d0ad8f199825b111fd99bfe82324137b4a2c5488175af2e. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/JMA271903348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59909e46d621a29d7754cac131a77afed70e2b046bd12076a014899c16831002. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JMA271802195.
Powah of the Trinity (feat. Arkaingelle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584bef61541d089e75e8f50b022caab3f9d9b9c97d1a08e4cacceeac9562fd0b. 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/JMA271705168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dfeb0f154eb997214007c1191aeb0575bc53b23166a8012134954669be3b08. 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/JMA271705169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa481582494e14358b869bcd0987d9ad2194fbdf9de5f086af0653b7e0fddf79d. 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/GBP6T1600200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031b8791df13a5b218eee60d15bec7c5071bdfe962fbeffe30ad16053f61ebff. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GBP6T1600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284d32b8e364cca3e16984e20b4f03de8ed78d8f05066ef5fc119b500ac5931f. 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/TCAFA2042955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab5d0bd4d6fa545d86df0a1be523c8100fc7db186f43da16a1c0efc918ecab3. 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/TCAFA2042959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04739c9b2c8074d4f0fa4a17c1ed78062e04a8d8b8c26f5b6bc57a9c6400bcc6. 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/TCAFA2042967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5bb89f049a1c42989ca8293afb40435a9e9c4444e037a526a5a1690e6bcff4. 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/TCAFA2042970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec92d7dd17d1ceaa5e964a83273494fa8bbb833e5be3cfe4e1eb638f32c72e2. 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/TCAFA2042978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266007b00dbb5504bffafbb7c370857aa8aec2e0a54fdc13e9b5bdd342713cb7. 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/TCAFA2042982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577f74910b02b8be0e12d212e2b69ba08d6ade4fc62e4b5229f8d38084100a2c. 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/TCAFA2042994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b237f96f4558299158b817c3d425c978c4e30c2a410cad71e9d752db0022bc. 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/TCAFA2042998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6412e6ddb8e4f123a4fe04b1acbeff11d74705935ee1e066f14773e96bee3bff. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCAFA2043000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180f40fd66016c41bbe9f51dc6fb2267d186602a5a6d9a426cf0325603cd223c. 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/TCAFA2043020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84537b71e290fba260181de08105474a86cad03b69af4de8d0ab61793504de8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLJF0507951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d757fcc7d6ffc4f7695681e3f860995e4373406987380b321d493449f99280. 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/GBLJF0507952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bd5b567b6ab248c3871a5c4e699bfcb1815c75bfbf8efa538cecd48bc49af3. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBLJF0507953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315157a8439cff855c7de3ffe037ed5a9b0086aae9246799abf5c6bb688f8198. 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/GBLJF0507955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4278cd8277921fe22a360efa5c042068cd4f509c3f43da60e2475c471158af9. 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/GBLJF0507959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faafdb97c431f854a1518b7234c7e7aa20e9581ba88f144a163ddb4e1470ced. 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/GBLJF0507961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1664e614469949d0baf8f3dd61079c74626b740d7117416da7662c42c31198b2. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:41:03Z), 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/GBLJF0507958.