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 0x328a8936e1e1521b17380b3eac4d49427787e24975759b0665ddf47b8f17d7eb. 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/64e20fe9-ac3b-49f4-8399-21664d6af8f9.json and https://artists.proofprofile.net/proofs/artist/64e20fe9-ac3b-49f4-8399-21664d6af8f9.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 0x7a7d6d8ecc42875dba640a89c72bde7d90a8daf5f23ecc68332ef4ec5bbf7683. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZWFU2431054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6dcc7e6a52226bdf4e2f8025b3bf08e2c61d7780be6f2f1b29a8d24e06cbaf. 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/QZWFU2431055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb450e340de0dd0a36993016e9daeef38966aa3b41fa9f96cee3297074d8a333. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZWFU2431056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327fcc1a1180fb20056444e9f4a33cfb648f3a1c649dc9292b16e48f92113e30. 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/QZWFU2431057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe89b8fed1039bb63dbdcf5faf7b610cbcde72bbe66787cac77667431c16026. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFU2431058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a12c851db040df596b30788ef08d935834c9182ff04c0ab85aec199a6d6a3ed. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZWFU2431059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98da33adf28d46d25a32b4d6aa7002eeba70f3197092f31fe9006dfc3d1bd617. 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/QZWFU2431060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cb68195e0e5880ca4d8027bb142a0f099420bfee4ae0508ab3b836a54a626e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZWFU2431061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b9b946761ea02a372ee47e1d324c85891baad49840f8b8cbbef1dc9caf192a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZWFU2431062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf9cda88cfce853f919bf8a144515ab44a11ee99d850853ab6f2d263551ddd1. 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/QZWFU2431063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c42540cb58d36e35b1724ad817074f4d4eb577337c602fbb340c734d457409. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZWFU2431064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637c1ccb5a2370e3ed034aa145d6e4d35b05fb761d5fd953e17b2f27c5d2bb2e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZWFU2431065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9745ae90d17f93cb2e09a2f8e6726fb3f1971695e310af9760bdd7a9f86e11b3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFU2431066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082cde0e09ca463519a42b5e23211c2aea55ed90ccf88081f746ee438060783e. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZWFU2431067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb2abc22dbd0e93a65998360505317fb7009fa61a0f3373d75cc1873289f736. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:28:54Z), 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/QZWFU2431068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7135d5b8162ad397cc4daeced384c8563156476b90bdaf18e3d4fe862a74cf6f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFU2431082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8b2b3b86ab12baf09f8690c160b06d3322336ad7ea8ad0a4766609f7fd6c46. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZWFU2431083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb580459fbb568be80bec90ae914ffd717bd995ef707ea71b69cc4109a25d9448. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFU2431084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e86f295b96dbe5a0a359328c11249f915d6f8533971d293c961fbc64f5504d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFU2431085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317263306988b29ead7334f9970dd956d27ac0536ad7117c4c2b80f6bcc2533e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:01:49Z), 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/QZZ7W2482955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2967a0b36ec2e78b89aefe03c6487ad574f43498f0ac22856b82a63e0ab0d9d. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZZ7W2482956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc562b4ae03ac204ea097fbe58c21433c0618674c92a309ced96ec531fa443316. 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/QZZ7W2482957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05651aaa19bc73936ec5076a7357a92e3debd432d33039d48dc0389b5fda56de. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZZ7W2482958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684be442af04fb1bb74ac894b0da4c2afb4155d17b32bae0f2674d52968c5efd. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZZ7W2482959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ace3df14e4cbe39f6518ebcf176ebce5dc2c2c9f6e58f905003f1057b6ce82. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZMEN2562398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca68feba9b95cc39a92fcc6ebd2a637f03abdde089579c7498b78fc034800583. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZTAS2579327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40be807d27427da180eaf387d5fdb5f9aacc2255007dd535b962314c1e5e11b0. 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/QZTAS2579328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28db5fbc4356f6257541c4ff8e6e3c3ee310e498bf7bf5b4fb374e1b839cedfa. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ7M2594044.