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 0xebaee4f3fd882f97aa22137da013bfabf18a3b81bb0edc06244669f93f77742a. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11955a53-6b3e-46d9-ab9e-92fb4a029974.json and https://artists.proofprofile.net/proofs/artist/11955a53-6b3e-46d9-ab9e-92fb4a029974.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Samsara Beach Sensation Summer Compilation 2012
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 0x559e770f4f6e1904fb30c736cecfb5973ced9172131ccb72497794cb7f4a7c5d. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/FR6V81215198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ad632667a9344927091898a2cae658c12ec2c415af75953686cb872a350e36. 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/FR6V81215199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f41694cc0ced94b14436a519622e9c01a3d165fa3de1914cc1bed37c12b671. 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/FR6V81215202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc2f5c24d79c002692247146d4e44d0f0593479c22fa867327238bab612c2c9. 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/QZWDE2458931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827e6147e844a16a31adc3a9c26aa6a92b9e3f6b813422da6f9e257ac64f08f1. 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/ITVLV2401041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5035b73047775dd304613621051b77475a1c688263d90a35d9a2a307bd5cf3. 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/ITVLV2401019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e852d3e3d4eb91d559f3d22e0a260a280e5ecb7662c8833145d4ed6cd0c882. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/GBKQU2423481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d1e880831f179b64c136feda2d5e6c3ea0a22a6e5262e8b850616bcdbfe167. 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/GBKQU2423482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9684adadb80ef5b5341e2a3e01ddf492e114a45d528490b98aefa00ca0130a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ITVLV2401013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48ba41156a25751ba83e7a8aec61bcf2aa55209da3d477045abaabf007fdb88. 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/QZZEB2319570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509d9a1860a98b841e5f2f1827c56ef23fbc3047edb35fff8c10b184aa4a04fc. 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/ITVLV2301003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f84d6d41cd2e33f21ff6cd008b6c1c435da332326bf9193d1c37ccab7dad974. 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/ITVLV2301005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7639af430ceced901810b7c0a6cbcf5e0cda0aeb84d8436fed67bde772be40a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ITVLV2301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711e745dafaadbaccdb687ae37c63c6dc8786851de27bdbc2ea3bb41e961326f. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ITVLV2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff780d4a1cd0b31778e14d73827700fde69ab452fa7e321eccdc9a198dacd95. 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/ITVLV2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bc66f5f0d966f1b23d1806b524e06362271b7fbe2e04ab3a7e8d0f20703f63. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ITV261800610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527a076386aa15db0f329fae1cf3c680c26bcc389d9af7a00186c60c746294fc. 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/IT00D1700803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3178022dc119689a741996bca37562b62037a45f176d0da635b290d4faf33402. 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/GBSMU3091006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3adff995ccd1334bcd74c78245afc26636a5518ca0b5c6eb9489eeeaa457ff3. 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/ITC351300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67c6638b08059b7616b28eab33544533e33ec6a3cb8627201a40946a9b8ae15. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ITV261800552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe569b266536bef8d34a5d7aaf0919f8e6a28a0bd65c60590cffa871acd48fb2. 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/ITV261800554.
Toolroom Radio EP750 - Presented by ESSEL
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c51fe845a262f82a79f9dbc1104bb1e8234d72964470185780f8b85402f7b1. 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/GBJAJ2401157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb238e7026e141409c371dd329f926a25e635b6e43da346c012a6605fbb9f3d02. 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/GBJAJ2401159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc162681eb3137ea3d258ca99fcc5dd6613c163f50245bb0127bee4c43f8dc36e. 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/GBJAJ2401162.
Over You - Richard Earnshaw Revision - TR750
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b10f8982d4edb0e9f19b767415f4ecb2e5884c9614b0527894a1d5ebbfc02da. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/GBJAJ2401168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc2f5c24d79c002692247146d4e44d0f0593479c22fa867327238bab612c2c9. 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/QZWDE2458931.
Toolroom Radio EP697 - Presented by Mark Knight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b59b7bfc3086dd260f07a0e4b17b596977cb47e8f007df0328e5ffdeacb7cf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBJAJ2300995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0034457e234ae0fd4c82bb7774b5a3158a65671c4251b0db6237bd5a9bb2a4. 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/QM7282351540.
Housesession Summer Anthems 2015 (Compiled By Tune Brothers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98203883b0b8faaa105844e4dde387378e4f0af2b0704dda234e56f3de2317fd. 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/DEW871506203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc059f69188dd9f57819ed7e092168a2693dad951f127fe972016d2d42c5f3cfe. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/DEW871506149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a1261d7acc16597ec388245ff3b16aaba7d3413584312a38e209642fb9bfc2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ITV261800511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae70f1457e927d2b0266c130e314e61fcc8799b2067ab47a7aae049ae6120c9. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/ITV261800515.
Endless Summer (Selected & Mixed by Supernova)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fa295ae177eb8d3681533b171cf9b813d676e43ddef23146a7bd37d127029f. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/ITV261700320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf847163bc740f449514b24e659c05c5e03262674f05533a032339f5ddb6a452a. 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/FR4E41410750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187927eb5e7b78e6f970c4db39b3b23276fadaceceba787f8856d95168ea8bb2. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR4E41410720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb84ed17829d62015a5fc4d0f5a8bd3508cfd18d07513416dbd49f408815f7c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEW871504805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9a9f708150773743b451cb60522b54105075459215b159f3754df170477b5f. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/IT6FC2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9babc70dfd7e4966230d9ba911b0e452b9f5aa721c17831486030bda00cb660. 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/IT6FC2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebc9310aeddf88aed255759058d8c16c010076329a8955448362311c63ab229. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/IT6FC2400036.