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 0xe1c1212fce720231518eee1ecd4a0f691db5cab6672a3a3dea87587a375daf55. 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/1abb4225-7681-41ab-b5ec-c3af4b12a48c.json and https://artists.proofprofile.net/proofs/artist/1abb4225-7681-41ab-b5ec-c3af4b12a48c.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 0x3dfc271e20fafeecf89e0c701c12999c69ed8cb2f227c2ac858b85016f3a80f4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKQU2248309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0accf30b3fd895bfaddbd69ea5ff8a9daa00416b60d0401006990236f115709a. 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/GBGLW2200751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df6aa7b1aa7bad8325778af0c6578c9311a96dab25b63fdac851e7ff96cd24f. 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/QZFPL2100480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6844e4893f97b113101d8647422891b734051fe70136688ea48ac04305bf2a. 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/USNRS2343088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f740a6e91f7dd3e7cde50ea79095698ae592505effb6a99e1f0ea4103ef788. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/NLML62400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3874644dd2f5d6e2e414048bea1e97df903742c60a1b3fda6f77836435f897b. 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/GBKQU2385496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fae88ada043af601ff156c8e45fa0380909807ed2b13b4cac74433d4cd666d. 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/GBKQU2386589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22873ede899c0ccc04f1244b1b8eb37fd0c04377ea86af256953cbb9c699c917. 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/USNRS2342896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3998e674b249e33fd3e3572558734392dfd7498ae7b967cefa30edad42bca5. 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/GBKQU2334659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929089d751f6342274c4a5f9cc09aed43029ebd667239dab70938fb4fb8212bb. 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/USNRS2342525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2563fffaee7510b6656452d849e66f268a4da500c6ffec80ca3cf6a5dba8ba3b. 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/FR9W12228225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2ed901473987d19546b3e9abf0844d90fd1daa4bdbc677ea915831c645304a. 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/GBRKQ2298408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c30cc81e755c9065d20a2abc56e4166ba0c21291bd8b6f7c552ea44579435f9. 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/GBRKQ2298429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7d6ab9d6a9cb20c8bf74edac3948d785056d9c8a0e978c4f67c9e930744259. 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/GBKQU2253252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafbc4bfe5465ebdbf733838f1ab1b73ce4049711f8fc7d4cc070489d5fae765. 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/GBKQU2239093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7ea4c942ef1443b3bb1c556a7a469f4844dff7db51c18b29d3e99451fcc677. 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/GBKQU2228895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dc77edffe28fec430332865666ca15dcc67fd86ced38d6b0b489490c255eaf. 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/GBKQU2202693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7a17bc13c8ef3cbad8323e90b5f1711340593393d65d8ea1b2410c4d14aca7. 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/NLE712100780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf65a03b4dfc7e7190085da6d19b9e50f0a8cef62dd9f582487c20335e43d9f. 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/GBLV62104536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0324f334e1446aa24f15650f7e34feee359fcc3f0952edcb226b8e0ae76c609b. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/CA6512100845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd814a73df94596b134df4b14ed69f22f59f7f2e200f35b95c59147b23461b722. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CA6512100829.
Tidal Wave - EchoStorms & Chapter & Verse Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f88ed34e1e45eb0c519607f6ee6853e329bcf01a2809d477b32c2756484588a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CA6512100830.
Feel So Right (feat. Honey Dijon) - Tedd Patterson Club Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d5fb8c9c495a65c71fa118b51766fb3433bc25536bcadebf20bb4e8aed4993. 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/USNRS2342970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33a8bf8fa957cc508a0904d3e0cc5e6dd3dc85b58f088e6bccdf4ef465e9fe0. 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/USNRS2342957.
Out Of Your Mind (feat. Fleur De Mur) - Harry Romero Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bab2ad79aa28a273f3d3a12b60243c449c1df1f847b9cff67c681cc90840f7. 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/USNRS2343038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614686aeb42cf385bc894bc1b0b441b89ed03490b3997460bb8b8dc054af55b4. 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/USNRS2342761.
Cosmic Witch (feat. Anané) - Mochakk Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a66017f1a0544c0da8440154b6b4e71c82d173c063b1848abe3e3f058e0c4d. 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/USNRS2342553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d196a918fbb8bbf6487be90ef9aa9d812403e460b57d8787038c4e6a9a0472. 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/USNRS2342613.
Sing It Back - Cantame Spanish Version OR3X Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1180471a45211d3c1be9516b1cbf1240460a23268ccc92af95a0474a00e2f5a0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USNRS2342616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8118602e6b2a5e9c59b2ccae60b41592e59f445a11522839abc3bf017b4bd17. 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/USNRS2343078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcacc4d30c2fffa34634351ba589e0760292b5255760ffa29260fdef5d708b7. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CHF922300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e8d5483ab0347fbd20367675381592aba8adecfedfd4c70fbc389d42513c58. 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/CHF922300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46aa623d50351ab550c57b1084330ec0f7052dafcdc00210a8e386fe5ae488b0. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CHF922300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30807f77cfc1de1e73e8604cda125cc093e5ad228ef85219330f7dfbe1b83aad. 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/CHF922300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3822f099db91db68267ea783c9dabf5cb6b8ce4825d8dfbb826a1e4834f8d6. 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/GBAHS2101162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f054a6ed8b3428444c3c7e857e021a6672d64e949232a0b5a5c968d45e2751. 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/GBAHS2101193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daeb2ad3bf294d9d8444d7e2ce1f63d82a4634f5e7a905493249533e9e39764. 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/NLT2H2401193.