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 0x9b9bfa1b14d31ffd5718a20e7a6ad85c55db7e37e97cd8d5192e9f5c717bf572. 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/deaecc8d-1860-48ab-963e-6e9c7a63f73b.json and https://artists.proofprofile.net/proofs/artist/deaecc8d-1860-48ab-963e-6e9c7a63f73b.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 0xad411c389e36ee417c3cb1dc186ef627e88d739e039b36db955bb4cb4ce5e758. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:50:43Z), 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/DEQ121752268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd37608602828d245827efe57c1ff00e6d8bf062f8d589464d07cd504e09fad. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEQ121753473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6e5cba53f3e3c2b64744c944bbf6e89117186def34f773c8addd2fb40fb69f. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DEQ121753482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8224c5c3ca9fd7157ab2f604e9eb8563810c83eac0e73d1c0ec14c0c3360b7e4. 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/DEQ121856174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5eac7c9b4e331c9fc339dd8e972b484ff47a83820c7b3f2340a6a8cd088a8f. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USHM81843510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ea7f036939f4c0c77a7c42500084f476b5312a226d2fdc6b3f9dcb244e36fd. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:30:29Z), 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/DEQ021808088.
EXPEDITion100 Vol. 3: The Raw Version Of Smooth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7c6959fea4e15097cd1bd6b1b190d9e9e63458cef4240af38a5afee3cb88fa. 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/DEQ022003020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3bec3578954649b281ca86c4a7e356a4fd82e576c666276e4c37925a85e607. 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/DEQ022011751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154ba7bd01b6ebcf34e00c31c0d1b97cd9411baa76b27ff89bfba5a3385087f0. 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/DEQ022280284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040425e7fdf2817a0aa2143e2afa585ca5da78ee3a8194adcb4d535a84892466. 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/DEQ022280287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf345723eff928855d8a92148baf0105f97a6ac3cf7a82a25136841a5068d6073. 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/DEQ022280288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429a1522f880ff3c573b0d68cf12f36e9f413bef7606a17ed325fe8ce9fc6bf5. 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/DEQ022280289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb638ee8df038a941a48fea1e40daf0238f9e59349e262a71c4d4957dfc3f774e. 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/DEQ022280291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce1fec884ed383174c43c62691615bc132aa89f3932fb80b3577122e2a3815e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DGA0L2417659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac06db51c53c856399caac523a6032df0617cf29c23c52f4a3ed714e809cc74. 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/DEQ021806274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8c056ac11e87ba8c77917e3ab4a73ea4df53b295fcddf3d234c5f03bc9b924. 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/DEQ021806275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71370954b2256f12f984fd38d8247e1174716678898c31d6cf4f619a457740a. 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/DEQ021806276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a8f2f3deb8cae3cd8d1d9d895e64de202ddf11781f4617ed13841de3060c18. 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/DEQ021806277.