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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dc119b0676272e462758c8fcd4c578acc2489f27eb0dbda5f84649457c6d4c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2f9938f-aa68-48ec-b19a-2c2bb0d612b4.json and https://artists.proofprofile.net/proofs/artist/b2f9938f-aa68-48ec-b19a-2c2bb0d612b4.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5793ca712af20a062eddf4b6c1d7c23a07328eba833b583502fff51f891a44f9. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JPF450600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa354c858e9146699a4e9a815cc10674f8425d28bd034ff797d6df0a0f0377cef. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPCO00815750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf9677633304871e0733b2019ddae31a792a84924562a5d2d55c23d9eab6554. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPCO00815800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324c660ed06e5ded77388fe053166510fe8d5a17c6b56ac9596c6d464420d780. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:20:23Z), 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/JPCO00815860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfbfa8926af4cee6e7ba93a8a62778f9763a60247b2e841b538913237c88b89. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:48:07Z), 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/TCJPE1614400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73cd8ebaeb9f6dd31b7a43fe39e8ea087963bd54f5295c0339707df47d71437. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:36:50Z), 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/TCJPE1631411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44734169218e322c196663999cf79f043d71e510339fbaed75dfddd457cabeb0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:06:50Z), 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/TCJPE1631412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe535110858dfaca2de0db81a2568f8a1279793d22d23f2821802c38345708c. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/TCJPF1776984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103fc99a8ee8359d6d05ccf84ad1422aa0234dff54c793de196923b3c33ef8eb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCJPG1853315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e97036af353c5f8545fa0ffbbafdb537c9754a5fafb84c07c0a1141dc76ab5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPO2118460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefd65455c255b9627020e36dfbd5156e71815abdc259b60caa95e33701afd5e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPO2118468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd71c1c53f8d25d0c36dbe6ea6dcddce2c833d07590770db17606936f84e4b8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:05:48Z), 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/TCJPQ2142033.
RUB A DUB SCHOOL 〜CRUISE SESSIONS〜 (feat. J-REXXX, RUEED, PUSHIM, CHOZEN LEE, PAPA-B, JUMBO MAATCH, CHEHON, NASU, VOICE MAGICIAN, ZENDAMAN, 39MAN, CORN BREAD & ZION)
RUB A DUB SCHOOL ~CRUISE SESSIONS~ (feat. J-REXXX, RUEED, PUSHIM, CHOZEN LEE, PAPA-B, JUMBO MAATCH, CHEHON, NASU, VOICE MAGICIAN, ZENDAMAN, 39MAN, CORN BREAD & ZION)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18abde29c2df2f634af01f793cc0e3e2bf7ab70444ea5be854570002f12145b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPW2356156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661f085d22f432029792c4f18ff46bb3c9c99cff877c8d04e1442221c2b0b4f0. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCJPD2555099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aff09f5fcc9022b13a86bcf6f37ca6f19913720919dd458f6f01e237f2cf204. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:14Z), 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/TCJPE2569101.
RUB A DUB SCHOOL ~CRUISE SESSIONS VOL.2~ (feat. PUSHIM, J-REXXX, Rueed, JUMBO MAATCH, TAKAFIN, CORN HEAD, s;si, CORN BREAD, ANARCHY, RITTO, Jr.SANTA, Spinna B-ILL, RYO the SKYWALKER, ARARE, PAPA B, MANJILINE, Zeebra, PAPA U-GEE & IVAN)
RUB A DUB SCHOOL ~CRUISE SESSIONS VOL.2~ (feat. PUSHIM, J-REXXX, Rueed, JUMBO MAATCH, TAKAFIN, CORN HEAD, s;si, CORN BREAD, ANARCHY, RITTO, Jr.SANTA, Spinna B-ILL, RYO the SKYWALKER, ARARE, PAPA B, 卍LINE, Zeebra, PAPA U-GEE & IVAN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8669efdaf4edcd6bb20345cb57eabb09ec4d005e653973116ed6ab40581e52d8. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:19:16Z), 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/QT66J2591802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff74e52ea938cd5f2c5d848fdfa2f99ff947d8a24c627f7cf317cf788790d0b. 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/JPH372100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40830a7389ba5ccf3fe7afc10367a12651668c7ef624fc0b32b15f9cfc64bae6. 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/JPPO00765540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8245c1ece240fe27a5575e198585d2706bbee3fc4531e22dfb18f27604037f46. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPZ921303269.
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 0xeab201f8be8f81bb9a7ef0bd7706689ae31e1fd9083e82f9e5b8d820cbeff766. 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/TCJPQ2148194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8d8ebf0607d45ad29a12116d0d8b6c42cf6f04d256a802f9d3abc633fcc293. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/JPJ901615850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1fcd4c16fcdb5d41b4a28196925fa11f270434e67a23bd9596808c9a5aafe1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPES00600821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6dd5a661cb7a6f0287b468b1b5ab2f6f80a027a058fa508edb6e0f06667c72. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/JPTF01912504.