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 0x310e099a7ea787cffa64b2161f73a280b9b5c73e575ce261634ccaa521f32e7a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c8a5635-a353-446d-8404-2c62582a61f3.json and https://artists.proofprofile.net/proofs/artist/1c8a5635-a353-446d-8404-2c62582a61f3.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 0x5167783ab5560aebdc7410139800f1a383d4c7eb302988a763b3de4250a8e312. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:05:23Z), 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/CH6541785095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f116566d57fccee6998c0fb1966c7913981a3fc110d37276df0b0443b26057. 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/CH6541785092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75c1084acaba6ad37cc02652ac916f7975a98807ff50a33427fc24f4c673ee6. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/CH6541785090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f47ba0a6b74a9ac452daf2efb6c75cfd50f8a1b96e2a1967ca3983e896073d. 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/FRDCX2019150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32c2be0a46d868620a9c4a412c95ef6f492de051230cec45cd83dd764c78cfb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRDCX2043560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6991202f6c9c20c7ff127516e6202d9f3fa436bf4059dd0a296065ab959a081b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FR9W12022505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a433ed416f75516193f5e7098b115a991678c6c7f8ff83fb3fbb224bbc0ab17. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR9W12022503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5111998fbd5decc493e629bff1b6be730af085ccdedc6083b41b911497e13e94. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR9W12022501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451972510b5f9977ed53f3acdf34c9ca338e8a10835f08bc70040b5e3ef4f554. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FR9W12022497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf1303306ee7aeddf843678dc0afd9cf055a0ac1fed53166438890e8d30fe99. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:39Z), 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/FR9W12022498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4339eceee78f7b92dfda611b7dd4afd305a589edc1633cc5b20054d50f725283. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:47:51Z), 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/FR9W12022507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bdc79dd3fecaf1f5fe28fb4be1a21ead6fc886cf6fffb313be90c2fdf0bac0. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR9W12107684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a104a7bd457da6022d15bdf09ec266d98f5df879874861aae9ae69543fb2aa4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR9W12105865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3c4ea4b1a588c07600d08671341b5506bcf5abca741146d7e1b4ee5f489fc7. 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/FR9W12105866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dfb9bba3d4b141c789177cab03fafd0c31a879adf3651f8f2b4f1ef02c8f5b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR9W12105863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7c878164b32bb4a719773a0d0b0f4f721874f27552d9d4e26ce394c16397a1. 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/FR9W12105864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e774ea0fc002b57a711c908a6bdbf1ad6cc77774bcc899696e9679cca5edfb. 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/FR9W12118393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19ed188417207d3a24193262b94e756865eb8ff5c836b90d21a257254566029. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR9W12205787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67cdb3e3548e5ebaeca5a479e61efd0c5798b4701b3a49cc6e85240e6fec8b5. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FR9W12246691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b6753c01f910928bf5778e35db44a89329906d4b24db22781bde1395f9af4e. 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/FR9W12251179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a2dec89d9c07d40cc5b6d9ba9f3c7e133e5bb02669c316ac910cb56637a20d. 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/FR9W12251181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bb2a4a5303c3a73a916569622e03daa6da36ea0f55f62037422b230befa3b5. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FR9W12251182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a36168786fabcd14a0d4a990dc126971306a91bd54dad3ea96616e76f357b54. 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/FR9W12251183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79f9ad18c39f4965e31c5488bf2368bfac5f564ff23c45b479c6187b1c6963b. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:34:33Z), 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/FR9W12417513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613954a954f26152bb654a771fb7ec0fd92eec14ff575457b88f783047e6c646. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/FR9W12417508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecef400826a095baa0c5a9eb78e6f15111179970b7c7d8b48d9cf7d4c0c1cee4. 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/FR9W12417512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b316bd73059ad429b050ddf02359633e89e08fcd6a6619211a92ff89ecc81a2. 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/FR9W12417510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108b201d01e6296170911dbac6df0a33ea3e683e3d2b505f01c31d2bce995970. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:08:27Z), 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/FR9W12417515.