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 0xe65a36cf3b17c50b880c389cd6865a712eace471a16da0e3e7456688df7b05c6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e2a3ad0-99dc-4513-bfba-8fe777b3ab0c.json and https://artists.proofprofile.net/proofs/artist/8e2a3ad0-99dc-4513-bfba-8fe777b3ab0c.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 0x432354117fad86245c26f0c5d4ffac24f741a205848e543aa10cd1924c4d3286. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QM4TW2102440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b45ad6075d29c0b100d5996ffcf81c02dc66f652a764fff3880a9eba2d30985. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/QM4TW2102444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247a8f5ab381e162b6aa0ca5ff011f1396a49ce33c3599012280fb099bad0415. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TW2102376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da8b049fd494e94b1397c80d686d792bdea4f156446a85e3c2a2b95258bda2a. 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/QM4TW2102414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fd2a383598c85fbd08c7438548fd437f7d99e0a09b3f473e499b4b9a6c54a6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM4TW2102418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b16e73af006ff5734b1280ab7a1b558c1fb0258c40f3aab5a2bc448ca69598b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:05:45Z), 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/EGA090100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fe1a9f79e91dd8e4fa05e36f38bd45f0ae478a3c2bac7bb6965ab285a116fe. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/EGA090100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65498e30ec9ac9f52e2cae4ea8250daec1bc9fce820e6b7253a228da205e11b. 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/EGA090100206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b98fff9e50d46cfcb496b2e6aeb8937528f0c4a6aa244dd749fd48d0961821c. 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/EGA090100209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa838c1ee05568ab6ca76a40c33149a0f5990f344470cc1fdac2dc204277ff1f2. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:29:18Z), 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/EGA090300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5c822e58b817bb93c4c695f10b6f515f5d2f30617980f6337483fd46230401. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/EGA090300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa468914cd53ebb585e97ebcf1516cd97aafb1d3b2ff3248b24782523d327ba1a. 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/EGA090300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23482abd036313dc462ce5ebd43843b27d75fdecf343e8302c0774c102aa56fe. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/EGA090300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb875336c8cfa81a27974df4955ca7b61fce29b0b6b5f381207b04648c1c6e915. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:05:33Z), 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/EGA090300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4c2e366d0823415780d62080cd60a02688552bfabd1bab6ff0d1285c566321. 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/EGA090300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1a7d788fe32bdb5789527500c33e75b0b9e1a102614bfd33e0c70586017037. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:42:02Z), 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/QM4TW2102432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05021980dbe564a7d95f073a4548a5c7b575094955e7326d6511baab8785212d. 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/QM4TW2102436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f496e4baddf1bffa7a6decc6f857463371207456ef2b57e1af63b504f71659. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/EGA069440203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718c75e0ad8981e07e139422b380879a3fbc898fd29137cb56be3baf7ed485f4. 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/EGA069440206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522c1ae84013c6343e02d33a1fe6bae7cbb7ff3a72387bb9ad91200993951722. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/EGA010545593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34680286297cac8487cbc8256b2a24b9a3b52fc1b1c75e24ee15a07d118cae0e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:31:11Z), 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/EGA010545594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3b915f08736de657c24f61afd8c67c34a96ae23d498fb1a16068e49b2ea44f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/EGA010545597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655a74b9417d86e2185a186aa7c929ad40d328db3e782f360d4bba5a0d20bcac. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:54:34Z), 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/EGA010545608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc1d7b39142562be9a46eddb28ae609760d7a37f0d5ffe43d828c0eff239260. 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/EGA010538509.