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 0xffe6ae8444b1f228c2cf90ec6cc69b0b25cf3e89d49e901f0a5bd300e747471a. 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/92cac399-8744-4995-894e-99a534fe6170.json and https://artists.proofprofile.net/proofs/artist/92cac399-8744-4995-894e-99a534fe6170.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 0x6b7adb5f7f891c3ddd591dc7a7c60be5a6206a0024617e06e39a0ae6858df885. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USHM80522423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2194dfdf47fd64caabf9f912fa07b8c453e27d034dc5c5e563f59803f47d643a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USHM80522426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b57c029bc3dec6ad4e070ba988dc177d2442c9de41baca036ef4c641a8c5534. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM80522427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cd8a4cf52b2d873ac67e9fdace7de30a77179c7eb0eabbcc9f87f6f1aad76b. 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/USHM80522428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bd02498187c74c2f5fc6d4447a3497eb75ace7d7fc7faa0ddd88cbcd93223e. 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/USHM80522429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9468ae180f1cfa2450ae018e9a50e260d57a830b44df3581dc7fa864b7046484. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:35:31Z), 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/USHM80522430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0482bbfba5a95c5afa22f7f04ec8f9b77a4fa1ac0b8b8df3cab2c242baeba766. 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/USHM80522431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b0ee95378241df1e9f106e0ea8fd48a211464066cd27a0f2ee105b766e989f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:56:14Z), 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/USHM80522432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cecb5b3520651318847231d23d4d433d9f119c5a18f7ddf064b9e474f859578. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/USHM80522433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24b66a8abca76b495d120ada06f9a1b6f70bef66ca2706f5d8a8c34cfb52252. 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/USHM80522434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193d4e60d856a0b831bbcc9b48569d787bd8776ab0898e32b70893c8d6990a7f. 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/USHM80522435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0651d54af946c11f3d15a3e3559dce334d7c5eae143901e84114ef9f8ccf6920. 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/USHM80522436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd943558c76d50d011303e06d7807114c12b22b9234b77935eddc5a0b28d1dde. 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/USHM80522437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2b0d880aad35b2d6965c66586f21733ce181e5cbe121a4a0c53f3026f6ccd8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USHM80522439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822b718067a315951a1b14c3574cde7de8ac97d3e57f998e0b804ee94496cdcb. 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/USHM80522440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714ac8acae2d0fbdbeb8670ef008e44a875d3bb45dabf9534fdb4d788e9b9833. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USHM80522441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506967ace1d6890c6837f22a8432be7b1b83d0b91d2787102d1acfc9df947741. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:44:56Z), 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/USHM80522442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bec1ffaaf25eef07616a6390dae30d03f3df8dfa55d7731cbedacf80dc499c0. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:27:34Z), 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/USHM80522444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81f319a6347c7816b51e4291a194661aec3a5291ffc0c0bd0adcae0e7cba734. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/USHM80522445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07023ebeedf85c8d0b12c970ea686dec2721431a66e09f0eedb07827bec05054. 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/USHM80522446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51f4e945579aee201d287abaf364755182b00243ef4350acc250f1ba43f8646. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USHM80522447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6d26c45f88b8fd19eacb9ae2e3415909700adf32c894984997ceff05ece7b3. 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/USHM80522450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd503ecff9b504954d8b30a72358b3af91c545a5f14f3b400ed60bfbffbbd7ba6. 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/USHM80522453.