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 0xdbbfa9e126f78c158b758c7c326d881a253f2a5f48ebe31be525f747cf0c02a5. 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/1c5c5d49-a815-453b-b21c-b1645d201491.json and https://artists.proofprofile.net/proofs/artist/1c5c5d49-a815-453b-b21c-b1645d201491.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 0xb847050e88286b98d5b1dd51d2c7bc9db49fd321b75ae02a637ba397775175dc. 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/GBTMZ1700708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5573c61e730fb5a8ab70cfbb3ee57d43a01a19eed49cbd2860c0dd3be4f366. 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/GB5KW1702548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338b270b6e0a1ff2da70e0649e38b16793f8ae3295d4ce43f4ead2629c9c6fbd. 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/GB5KW1700598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc57d8b0a7d9324dd43a9493456b639a6ad856167358d0be4a1b6d2ae47986d. 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/GB5KW1701842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1872218b112fe41db762dc3570b82eb69e53c6f8a75a196efd82b9d288cf5c. 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/GB5KW1602833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f1aff9c7a488a27dea5b18aac20ef048943155ad972aa1f11c74cbfc8bd457. 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/GBBZH1500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8f5ad5eef906bd20095c254ef30e6d671308056c72b8ac88a68c85b3304b9b. 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/GBBZH1500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9919a26275117448852171d7a9b4f89d89710b57729782d2a61571ee5548b46. 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/GBBZH1400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7873707dbccd0f18db06128615ef51728c56a147bdb52a222a0453b3aeac62. 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/GBBZH1400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201094351b4c799b276de75b5f17a3d97b86c0de5622269405ecd55276068dcc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBZH1400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11995dd3d38f4407eddd3b18e4def98f1692e3889dbf3bb4023068500ba9c765. 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/GBBZH1400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6170fd628a2ab7c083dd49e41d954252531b7e96820da9a797b4f58564450277. 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/GBBZH1300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba21d821136528a0d81ec9c235163c3c9f17c8ac591e70e47e147211117caa65. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBZH1300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93aec19ff9b46be0b2ee1468fbdec5648ec9154b28ce50704a8386f6280ef62. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBZH1300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071a795a42a593ef9b6dbee2e500245fd26045c6ad9d34eafa22598f1e8daff4. 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/GBBZH1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7853d864c16a0e7843a99451281aabb7a3f4bd3beaca3cb0e3fed92a29260ee4. 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/QMRZS1200353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bc51339376449603c13d182971e0b935a3ebfbbc4c7d998df40c7f971927aa. 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/GBBZH1300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8466ab5b79601a4aa43a87878f007064c5ebb44ef62ff32c703269f9ddb81b64. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBCJY1200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93aec19ff9b46be0b2ee1468fbdec5648ec9154b28ce50704a8386f6280ef62. 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/GBBZH1300050.