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 0x1eafae833f75aa2521c520dbf06a117978017e0f02879666d979912a7190fd37. 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/54746dfd-fec5-4e8d-869c-23d836688e28.json and https://artists.proofprofile.net/proofs/artist/54746dfd-fec5-4e8d-869c-23d836688e28.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 0xb0700b07af414d6f3c3d1913e68f4e6da718851ffa1fe011b049880baf1fabd9. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FR10S1434560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ebeddf168405b13aabaac99e7aa869069dadcd1567cdaad234f95a0ec92374. 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/FR10S1560555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8be29220071bad4849739d10f231995a21608d16b5fa71ec0682d401bb0625e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:44Z), 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/FR10S1560558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df46c497e6e03c967c49cdeb5e27c8fef5459e64fb8100eebdca5297b95275f. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/FR10S1560560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35867c8f4e521debeaac142bede6d52ccfa811bed145b50b81263a944d21bffa. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR10S1560561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a39b32866adab4f438acba09bd81549724fa36b3f223ff7c81a77af1b547de. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:44:01Z), 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/FR10S1560563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b578cba7ac1ec93d364a52b5359c117e770f7dca5a517c0e18b203dbc95a919. 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/FR10S1560564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0412801ee913e8255454c4ddf99720a8b060a6db6d830c8ac5c90dbcf00e6f5. 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/FRX281706035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26f8f1a4283be3ec73e465499bae00431e3446efe0a000cac34e28facb405c0. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/IDA711800172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c23053cecc456754b912127f00cb22a76e2940237284da309952dbad647ecf. 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/IDA711800173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc4ccd9e8f1fe25691f381d3ff9a7d4e7f909d72346aab8febb8f06d74df0ff. 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/IDA711800178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98520eebf2a5929e5247ee989c44257125cb0882559b21d3ce72adaf865cb5d. 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/IDA711900229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ceba55df9dac33c2445f54d9d1e6e3f76ed98b112a94d66bd2eef766a4042e6. 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/IDA712000268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a567eee231e81d67cda8ad74efc0948b775e8f9b8796d6dd08c07649392a7e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:30:09Z), 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/IDA712300863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a567eee231e81d67cda8ad74efc0948b775e8f9b8796d6dd08c07649392a7e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:53:36Z), 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/IDA712300863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c1d95fc031d5657741d97751ff5c896b7c2ee12f36ff7c80b3def2a51f4d3b. 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/IDA712300940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2554b0a05419c9f2bd893707530dbb0d76c6073e93276583f9656059bdb1832e. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/IDA712300941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c36a1fd8e2cc826fc0ed39b818145442958a84464dbe592965eedfd301c4fa. 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/IDA712300942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d80f0c2b6433556046c700d462005c822d58b4b4eb94b31c760ab6208da758f. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/IDA712300943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d63a8ad93669e4a1a6f22048e8022c8b147c80e64c05c0f3ba9b2343228439d. 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/IDA712300944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8e4d55145d013d45fea51d3704357582ccda8db7935439bbcb4eb72ac5c5c9. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:28:56Z), 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/IDA712300945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258b8fd92df35dce337a81f22248f4dbd11cea4a65a65218bad5f53ce790ddc6. 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/IDA712300946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80559858638d60c6ec8d7177d48ea4a22719c67838f0b52f09ac82e59e932790. 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/IDA712300947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1832be9593bc7929291ab22a04d7f7fbbe1854a5db8eef7e16df72314bdc51e. 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/IDA712300948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6221998d4315a829272cef36ebfc68a05f4ce37300a24fc2e7e375e00e621093. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:31:48Z), 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/TCAJG2568893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6fe4bcf60e0952ee6c43734d931766e282a0d568436e34340b379628be1d83. 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/QT6622530398.