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 0xdb8c003a262a1f0345554e6bf2b0ff456b6eca56e97126ea8ea2b01a1ec65f1b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8fbf3d9a-c66a-4fcf-9d58-a50eb37ecd66.json and https://artists.proofprofile.net/proofs/artist/8fbf3d9a-c66a-4fcf-9d58-a50eb37ecd66.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 0x99464817ed60e0ec8e4e5459333dfd710c6a6a45d445eb981e4e9f0e03996968. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZQAY2396892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c7a6b27be5f5095ebef60202191707a99dddfe7f3c5b98eae443a83136dbe1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZS7J2328118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36700e9f005bff2cbcf33faf324383e8931079b26caf3f0417d13f6785d4b43f. 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/QZS7J2353482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cba190df494821f674c180e60bcc95af0d9a0c0fa1c79c78cd56889e1b2fc0. 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/QZS7J2350875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183cafd83caf63fd42020d350d03fb49e1cfcfbb93e2e6c03a79302b6e67ca28. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZS7J2329297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb700141c159d00dc2745dd01ea85a04e95ca903084612b0ba568070c305601. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZS7J2345405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f2d60aa6874451df6e034b4e7e5ccb556df66c3603bfbf46c69cfef24d7a3d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US23A1540034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a511978c1b2ce4d50159d4081e11a056ffe35aee8f64137c65559b88d837ab. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US23A1540036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865c91397aafcb65a2850915edbc8d7012d71dc1924758da715cd5617729d73c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US23A1540037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09b2567b64a8462ac677736de5268d5552df5230e8f318c52f0ce0435b53ac7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US23A1540038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e55eb5b964123842838a3d8de99d32bdb2c2e38cce6cdaee010ed31af247854. 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/US23A1540039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c33a418c82c9220b5b0d4a53c7cbd5ad01b205fb76ae22efe716a91a183b77d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN32094565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffd6c8bc87e88eacceffbe536a2c5a6b99582a4e2866e375c96645c33092e94. 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/QZHN32063278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe54066d2ac8686b3d38ba777708319b13d6c7ef8fa2d62a28499368549582d0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN32094571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe6e577a1aa7269c6c6aeb7c350b38468ad1dbef0f54b849a53748f796d4b73. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN32094573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dbd9176ff23d1466c31413c59fcf86d8b6a5880a1ae9be207a10a04ede3f36. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLFP2483377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0743753fcba7185bf99c54859dfc5e3e9bc3a2c36ccda50c824422ab718a6687. 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/GBLFP2483376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c7a6b27be5f5095ebef60202191707a99dddfe7f3c5b98eae443a83136dbe1. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZS7J2328118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cfc1fc1fe9714c7beaeea4cbe6fbfb0a3ea0200a3f303b259022b1dd0570ac. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA42125040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffd6c8bc87e88eacceffbe536a2c5a6b99582a4e2866e375c96645c33092e94. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN32063278.
Bittermooncake (with Tochi Bedford, Zirra, SGawD)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994a42bf047de1976081a4718d8f2fa12986b779b0573895d8d17272b24c7cc7. 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/QM6N22282701.