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 0x8c37c0018f96e8050e8b4301e6f0f571aaf3bd1b95fe2b2f7616539823aa395d. 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/3d30d3ab-095a-43f0-a39b-e5f520c6e129.json and https://artists.proofprofile.net/proofs/artist/3d30d3ab-095a-43f0-a39b-e5f520c6e129.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 0x1713fb6c13e05ee0a2d4fbc4da18735f9c6274b9aabbde888df9655f0a50bbee. 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/QZK6F2359308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631c7193d61912d561a9be477b772de210a273dea41bc103703cf95a6f580ff4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2359309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2928208c78cf9c5a0201c0e00467a39dc46df04685a69ef2a6808c1e46c78d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZK6F2359310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffb4c94e2894127d0a27201e43306b6e621614af4683fd7abd276ecfa0b804d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2359311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fad74c34bc01cf329c663121d6a9a3405a8bd4640804a1491dd4a4920ef0c6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2359312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9788a5fee9f999a0851afb77bb3b8bdab3d8075b94106768aabd5c6f3767e7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2359313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0709a6bebf2f1d28f034b7a9898ac90bec4e46a602f37a81047c4af84d4c6cfa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2359314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6b3b91c08c62dba58cddf57efe2fdc20f06193b9868262613abfc35534e217. 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/QZK6F2359315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb404d4487456d3eceb2def9a56f5a9ba2023c004a8bada74ea9b5a452e1f3e1d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2359316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3317027973ab57055d04a893bb220fcd855757cec9ec5a2b7cfdec62c7ed9eee. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2359317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa329e39d32d9635cbb6f83a12f8f07a809684e691869abb4720b64e17e912b30. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2359318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b7d0aa4dd9ec7eee89148af97c98344d7e65fca12f39e1438994ae9d64afbc. 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/QZK6F2359319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd519a7b8096f881286c7ece0734b6c913b8188ab2769ab2e5baf2738768c563c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2359320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f76f8126ecc90474766ab74d06dfd6d598eb2582dc67a841b50fa5aa03686e5. 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/QZK6F2359321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f292fb7151a4f6323740f684abf9496df73f34a70bf65bfbf596c842e8db69. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2359322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c70a2cbf5c92bfe876cf1f0311ea02e4a783eb01d47a8fce2d6319e16f55ba. 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/QZFYY2350298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7517dabe604986f8ec613fa9b437e903c856b26c6b62fefb2d55f8ac49760c. 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/QZFYY2350299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29616fb9d1e8ec745d4b2b06e8b3731a27990eabb5965b8cf684077200086811. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYY2350300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ec7d19dca114355612a337d22df6a5582ccb586dc94351ed62c56f049a3215. 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/QZFYY2350301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa75b3e7e44f86e3ed50488056461553d7d52c4929dc9624cde38ad75e897a01. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYY2350302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5e26d156007a6c82350dbd813e40e5fd77e1bd8a3191091497ade01ad4f34a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYY2350303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf8d7a04d55e2a971edae0c3e2e2f668a46a9145f9b1aa68bfb4b0fa1b8362d. 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/QZFYY2350304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c2697fdf33cdf4f96c6ec43c4624acfd55e3b9c2018f8c1e87870333764104. 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/QZFYY2350305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba62e9545f3516018140cba37c6c2806fcf43ef0862dd297269d6feb12db618f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYY2350306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d33c994e7a9eea06cd0778a0364915049c8f2c66c45bbbaa15cbbbd98308c27. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYY2350307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f48865ed1e30398757daba5a3d36e903c02e6d4a1341778d6edac41efbd5ae1. 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/QZFYY2350308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723b3ecbc3e6792e3ebc61b7c4ba8c5c32a361fa74af10f4e7e9af42e8533bd8. 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/QZFYY2350309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8840be9364c3583d7622e0a9a8ace5b9dbabf4affd000d80d29e4ffd50382e54. 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/QZFYY2350310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbe2372ed4bc8b1cec6087a2a31bc675473158ae69a4e2548b8dc9cb3bcb6c4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYY2350311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5666deefee609a3ebcd3afa5330af73bba31692007fea9715ae5a169d3a09a58. 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/QZFYY2350312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf06454d16069bd9c30ffeb5896b7e6c490d244193893a06ce15b5a5da7d130. 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/QZTAX2333061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6e58978c5d50969a7b9da7b5dc830f3c6a0b912545ef3b56b38d05b19a9914. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZRP42278042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92284a6e926dfa1a752b0639c26c72bd9ee079426552220b742715a58bb35d29. 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/QZDA42202495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff762a0c36d81acfcd5c985c75ade6ab2d4b7fe1e0b10ebf89df638dbc879497. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMEV2047111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf639920d9a79f45186ed9e1a59eaf2a8bcdc304b7976c4cde8c214496fe89add. 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/QZMEV2047121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbff05b71bc409d9037693aa02e60d4476d852033007a219b9fbfd7368dba97. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USSM12308514.
Free Bucks (feat. Lil Buckss & Ot7 Quanny)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34dddcaa02b85a225a90bda296e17f6703209f08122272e6a8efd5ae4ddcc28. 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/USUYG1537391.