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 0x33b0107f6d23313967d2a712a23e6086efcec9f941b32c65b0dc3260f40b03a3. 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/bd77125b-0cdc-4bdf-bea5-fe037d0e32a7.json and https://artists.proofprofile.net/proofs/artist/bd77125b-0cdc-4bdf-bea5-fe037d0e32a7.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 0x106552f15eeaeed63a4e4bb1afa10861e4e0ba655d4d2d4d2f7d3c5968b17eb6. 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/USSM11605050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2f9cf4a7afa688cd626d76942b530b04c96b111057b67482dd7763b417c6f8. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USLD91720527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fb799c1bdd9cb4ac471d1d26a3c23b585a832b31d0cf592e9e926f01663511. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USLD91721240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fb799c1bdd9cb4ac471d1d26a3c23b585a832b31d0cf592e9e926f01663511. 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/USLD91721240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2f9cf4a7afa688cd626d76942b530b04c96b111057b67482dd7763b417c6f8. 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/USLD91720527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fc7cda006fd8fccdcbba6a2cc188bc9cf1e865750241ef41853e855ac7c5cd. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZFZ32279329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc7467ec0527e2b5854ef0332ec71c3d0890d70729ce147cb2d39050f806a89. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USANG2257770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260d06a1a15f2743c07fb08a3c7f6586ba8a423498119248754bcb55ff4ffefd. 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/QZTB22586957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2314374633e171fb6c66c5ca94cd53ab6344a9b3ea762f4a5aba3383f38ebe3a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTB22586958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3fcb6c025fc3752ae47a17b0d92f394f312289a739dbc613da8dd5d3850f87. 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/QZTB22586959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6fc4be5b45e82807d8efd227f56ba20b5b0c53adce7c42df5141f8410245b7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTB22586960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018a708f786e418e8bbc83dce1662e10d4cd93c21b5209cc1cfdb11a57dcf479. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTB22586961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62c29b81c2f21fd77c47a853ffe5af7f44f6755cc3e219554ab5234760a65a8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:51:16Z), 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/QZZ7N2566453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ee7632a14c663b56f9c64b7da8e47eb5301574ab6e7dfe1aed86ca59bb8ec8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91731718.
Lob (feat. Rory Fresco & Juliann Alexander)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bb168654bca5d12c8a46d429d5033c27108970cf08a429ce92335ff85a4a39. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USRC11803865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96482df42f7c4e683a12d101bde5c3e3d10e1bc91e0d415935ce98654348b8b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91739934.