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 0x05d1ea4f5cfdd22a829eb94a249a46bda248c140d44faac0f17a1a853900e8f2. 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/b64c7934-2018-44a8-9c68-4431d42dc72a.json and https://artists.proofprofile.net/proofs/artist/b64c7934-2018-44a8-9c68-4431d42dc72a.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 0xa510a449973492faa4eb3a25455f1c768cd626ac4783ace989e17d77a5dcb1a0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZS632137537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecc9ff6890b8dd513afbe48a235898c2b9d175cb5a44e4afc077b38bf0cfeaf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZS662245497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2dac77a94998571a95bece1ffbfe015a9aa1ef8089df81c3367004a504ce5e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZS632253104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabb0b8ed562f02abae4d56bad3879976357fe2cf60f81031640de4e65f2544a. 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/DEZC62037888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332484993ed8f1c8b63eb12c6a9625fe9f47836e81157d636c55f308e08e4ed6. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:44:06Z), 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/QZMHP2347882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b6b993574a00255d060aa5173caa4aaf324b63d01ccb98d7535941729a49bc. 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/QZWDE2382851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ced0611b7253d717513a6c84ea3ba5d4ec5f2309e0ee488d52e5bde8d3b45d6. 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/QZZEB2303415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2df22c30272f01b2c7efcfe573fbe6d8e9a6addad2625eeb337f11849f6d68. 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/GBRKQ2459960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf866049fd7f5015b233fd5b59913b5978d787d7693c66890b4faafbadc9c52d. 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/GBWUL2466667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1cd5cdfb31a881d9c037d726a7ef86089eb1699ea8b9432ad245e4df61f89d. 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/SE6HN2495607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdcb9afae24c5131270aa925feb3cce06029312b6ff08bc8d6f95c30203915e. 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/SE6I32417313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd085cc9ce2d8a70d45f119faa896c36b51e59e516022608679425fafe633c9e1. 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/SE6I32449610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a58f947a734d18a28dc6fd347b38905689941d732631251d85d1d379532f892. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:48:04Z), 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/SE6I32450035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ad37fef7a46aa1b2152eccf2205fdeb451fb1577f626096ca5d87bada9b8cd. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/SE6SA2413525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6469b4231b4150a8659fe83cccedc8be959709fbd2d8b1ef54f9bccc349a166e. 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/SE6QE2493215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23669d3c997db5c66f86d7e6302064102d120d1b657f5d8d756ec1c5470cbf9e. 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/SE6QE2460704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb18c6b2726f8367fd6e65c8f185dad65ed647d09a30d1980f9d8a6c98234463. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6QE2460718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b8d65134cbf9a0afa26af0e7c05e37ca299857a8168f5dc585c064ceef92a9. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/SE6XW2420521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084bd1f50ff1d524fa3f7e6116eb91903e9bd4772b60154ee33f5a57bb345c5b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6QE2460721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25057c15f8a413141d84785e50b419426f50965ec9df14bf69f39525492b0524. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/SE6XW2418999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc371277840f4df065eb41d801121452befc47bc3750484198d4f6698f97c1a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/SE5BU2575676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a24f28d513d739c9820b8c03c913fd08503e66aa575fa1d6f3ff6602455f1d. 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/SE6XY2568103.