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 0xde10c7eda95f93a6be960d85cff96f05a0cc60503a8d92652319d6d1f013063a. 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/e5dedbfd-3756-41b1-95d4-a22a5d72df7f.json and https://artists.proofprofile.net/proofs/artist/e5dedbfd-3756-41b1-95d4-a22a5d72df7f.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 0x6f7661ef6663efd689631363be3e4b0592e42bf2731624a7a95d2eabce7fc668. 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/TCJPG1714186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3773e6f3ba5cb3f3bb3239cf26e7ef225e46290553f11ffe7552b0ab5949dc. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCJPG1714189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb137e37e59f6165b2183e75a6e0d8b1d869fa20dbcd9edaeedb14ef7cd78fb54. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCJPG1714192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1024f0a3574620d38846d23e8c6969939ccd0b555c452f1b29716180a837918b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCJPG1715073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90868cbdac0cfb1776ef0a9ad0d7d2856379cee946fa81c3b8731d6a0aa64050. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPG771800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe97784fd3ff4d3ff629bb89be43c39e8746466b5c7ad42945b8a6b57922d37. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPG771800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30283f619935866d9b6743ef38a6366941bf92659b740ba4dbe762b4de5a8a6. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPG771800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7568cce70458df82e0ea500bf8e6f756ba4ba21afdf9088f0daab9918fd93f59. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPG771800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e99247316f6513d79bb9936dd8ed9213433c8a2159b021c4c68c54aada9d72. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/JPG771800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500930fb222782c3cac96848b37efe8347b3c6af105830486d6a58d10d8b77f4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPG771800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d43d9a271e2b0869e704991b8c586c406772b282223fb8cee6807be16242c2. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPG771800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bc2377163af046a6d2f920e70194459ffaa813d9627e99bc3d90b0c641262c. 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/JPG771800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2211e5164e1aeb9894c9a7e2bd2ba5071706eb79da61fb20c10f389ab191dc53. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:46:06Z), 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/JPG771800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de51ec6f785aad5851b05e80eb214ac26c6b8e21a948c65c48dd1d7b58cb7c9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:24:28Z), 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/JPG771800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a798f188d338cc294fccbf6882e2045484fef52543599b3f590cd52b6b50d8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPJ1963462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e26472f9f3c8469f613d34373a4e9675958efb13121993053ef8a39e003367. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCJPJ1976510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2540c915d601d8e24988005bb9f7ed3adf5683551027af37942d37ac44b6b3c4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCJPJ1976512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf395eeda97c0aec39e63cbeaec057230938e8b54e8ac1954e4113f3f05bdb21b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPJ1976494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800cf96d0a5ae4862412d7efb0b90d30286ff5fd2bbca068ebbde13eecfbe77f. 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/TCJPJ1976509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0774aec06cdb0efbc655152c3b2b769527970e279517e23f7b65514a9520c105. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCJPL2098311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9275bdf61418a4a9dadde7760e2d53237970352835d2dd23a7fa9ecb6e02168. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:04:12Z), 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/TCJPL2098320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d213b9a75821b9fa5ce13117a0faefd583802f3fdf009b3f303db81f2037c5. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:39:52Z), 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/TCJPL2098325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8492348ac13545afd9772a4f9f93488e5b4774604c031af4525140e85281c158. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPU2337465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe436eb2c0dd632e5f6a56cd7c0df7072d0d9d0361166daf04f1f8bc2da7b0358. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCJPV2352860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa7da3cb9d284eaf454e70d62abacd3297880b48e164838f4ff43c961877066. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPW2348805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd8ba4ee8f7ab76ad498c9646a8b9e9dfbc07fb364a63c4dd1bf6ae4fb1ed49. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:42:03Z), 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/TCJPY2362884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210cc25d9c554426e129091e1bc877d3a8e764b5474362cad928c74bdee7bbc4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPZ2497534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea7255a493ef7f46166f89e904a796f9dc19d9dd349e7cbd4c777f2c9d6a827. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT66J2528356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e0e7c46631aba3564d616e426c664eca42bc4005c9b146bc7927f00221656c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT66J2558469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc291f5d6e1e817476a64ab4ba4636fce16a09df8e1cfc655edfa9f9bf3bc0233. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QT66J2558472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b94edc95c7307f521fe05bd7578c04a571e56b7b2fcf1baba084fc4601039c5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QT66J2558474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b8472f1441327f3f4f22c749557030aa36c50416099ff899310e100ff6b9e6. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT66J2558479.
パンライススパゲティーうどんそば
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a000b9019340fbff660f08dfc28e0a2fa9ef920bb0100f05253db17104d283. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QT66J2558485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb897b77bee117817a4fa4b7f487b5602aae211bf1284856d60fbe7852ee5b9e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QT66J2558489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf181068753a369fbae2133c245d64147f3851b3d9b298ebfe99a89dc790f3c75. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QT66J2558492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81eb64d2dcda35b9e87150a07f79345e0d7d8ca97a87a1af78eb290770df824a. 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/QT66J2558498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85a3668bd6391007ffb587c4713f4fda1d20173a2392d2ff0df9a4419125e27. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QT66J2558503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1425fa697f130ffdc924565c10f55637f7af373f087d63adafdd6b55de9f582b. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT66J2558506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4d880ab0d3763bb3be565f37e03e94977a613eb97c032d97f43b1e54639743. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QT66J2558513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b35473b1ddef3f4e8ccfbbd0e9e93a3603a502cbd801f83fee9c91a1413506. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPVI02000910.
シャープペンシル feat. SUSHIBOYS (Expanded Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9878fcb9ff32116194ab39a6bf23b373a541f6cc9d81dffec196e340297c99e6. 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/JPE871803144.
Present Day Present Time v2 (feat. SUSHIBOYS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0f8bfe3a5ce382cb5dc8d2edc43d19d8e1594b44d3e4885083c8a1b32b5be1. 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/JPWP02202245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfbf467f79eb00dbaca8cf6b5f7bc5333b3cab484067885383d937138b464aa. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCJPG1886132.
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 0xf97120b98e292971963fb3058cb33603749f7767d897555429e1873a458379be. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/JPM591001447.