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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3df9b61c16a21ed2d1ccb115697238a90327a90adcf67b1072281d042c3d5e. 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/82d67db5-7bd5-4311-aab6-bfe5fd08087e.json and https://artists.proofprofile.net/proofs/artist/82d67db5-7bd5-4311-aab6-bfe5fd08087e.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4914e020426e404fd013d8a945b99921c43e791d9da54dafe2f0648471409b5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US3DF2092909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ff4b2a42b0b9743a9799b7dfcdfedbed9553324db33d67a64f3c1c8b7727d6. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/ESA011780060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416063ff6f70ac7688dca0fa3f6c2616a432d77ffe902b55a6e2c78ab4edd957. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USANG2184684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52619d1346527c7b2a82fcabb2c5f7ecb122fefab040b5ad635ac6336eb0dee4. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/NL4YD2100214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14261a1ab2b14725b69872cc8afe18d13ecace10bb23be5e5c95fa021da6ace9. 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/QM3DF2175873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd1d2b2d2f43110536b2d6a0efd877a577c1758bb55489e37d8ab5bb385811c. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/US3DF2252685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ba2b44488311aa2403245fa913ba004b95a7d619d12987cab86f0bece2e1f9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TLREW2226121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4d4e9abcbeafdf9c33eacd334d92144548255c175aff1fd7a788135ef923e6. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/TLREW2226122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53736c53351e1467ff45d5fe7cfc287ff2dd99d528f614d53bf9768257cb01e. 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/US3DF2280717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8603cec72e4d2ee8b89fb8f6c7d85e6039f1d94c024175c5c885293453488188. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USANG2206688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10edf9eb815b686f585b5bdb931e1e150487fdf2763947c6e578cbfbc342c3e1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM3DF2260139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90a2e6674782943c2006cc4306220d05912348559d4f4ae206c050798e86dc9. 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/USANG2454016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be0e6aa334bf46845a97fbf1a66249bca2530ac3b804fd4cdacc4cfa7fc394f. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USANG2487473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4b95ca6ce5a00877529a119735a10e0890b387411a98823f5fef77cd7b259b. 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/USANG2487471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5a7314d7ab68559b60e15f4f081918e43bdcb660901969a95319a6ffe6971b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USANG2487475.
walks in the park // those silly stories
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7c412af48f928c00f851bea3b1e4b1b44c1e85adb6e1aa6b8c82e7c0e4116a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZN882184850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f656fd84603380073e4ea6260aa56d642961df84902aab5fec600e840fcfb4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USANG2193364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2561f1be45d586c85f68b7acfd5a9ad404bde0ba01051e8f3a02a65a8544837. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCD4N2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5f35bbe742f2e5e12f02f855449baa7fa3e6eb41e3b5d737a218e0e7f8d5cd. 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/BXCMR2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb9aa81be3bff06e4e799f2f12747f9afe4901ad0aa11cf7c6226ad3fb55340. 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/BXCMR2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59eb761b16deddcc08057830ef276afab9568a4762cec9c02eb8322b93c3e28. 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/QZES82221500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71d768b1711840254756bf2dfb19bfafb15c8b426d3a824f55e27a1985d31a2. 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/US3DF2521767.