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 0x5c61e48159f40b22129ea6d25be268926f19719c1b8128c4fcc692f7fc775d02. 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/34ff7d37-1c9d-4b7a-9f6c-4b7fb62ca6e4.json and https://artists.proofprofile.net/proofs/artist/34ff7d37-1c9d-4b7a-9f6c-4b7fb62ca6e4.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 0x75606517ab0b1409163ab268f554f8d27983d4319115a06efbb79040e5781107. 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/BRRPL1800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d73d31aaaffc26f2e7b3ad54fc06637d44ec6aae7144d12a1b12582d5193304. 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/BRRPL1800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc1dc4b98ac6f9b21f3b8ff2ce9b3fa03a375064c7796076134e8ff53f0d7a0. 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/BRRPL1800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d72d5d558255904fbd1e385f8e6d53f7e8092bf4edf9d98d39a1a8f3245a0a. 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/BRRPL1800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6521c2daec0e16a867efad7a92a5c101e354f9832e7565eaad30a109551b1842. 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/BRRPL1800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3daa188561abd41aa73ffbaa9791ba0621243875d72be6f6aec0c22cd5e0e94. 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/BRRPL1800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f853826f717f976798a56f15ac010910be7077c44508a740d748c0a18735c1. 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/BRRPL1800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc2a289a6d3fce52e2203e711c2e69e01b515f56916d063cb0649d5277f9cc8. 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/BRRPL1800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d9a94eef0bb9c2288ae74b8c1934e01a8083d38ecfc80dd16f9db15c6aeb8a. 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/BRRPL1800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5421da3aa50190a590f10d1d134b66968843f97455d6062ae4953cef1b81ff69. 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/BRRPL1800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f0a0b090b6024527cd2160350c0d1b03027dfc62c31a81ba54755886443cec. 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/BRRPL1800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5b1834385a396b916e028114f5912963d4709ac81cb81fcef544cb8d4ad86a. 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/BRRPL1800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc407e637328fbe47076d65f0797c9928e2e46f6d7da108e1cef294e99b1b2acb. 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/BRRPL1800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9f60f56ffe28266969d4fa5dd26941fba0f3a80e87eea01b15a2cdd5cdd4dd. 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/BRQQI1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e4e4dec4d9b40c6bed60a2ee4af28a4a499e6bf9b7e41c55022d0c4db3709f. 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/BRQQI1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7665f121980b60a602bb19fae61aac17159d26de465a6f30ab18144d24e3f64. 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/BRQQI1100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958d7df634a59e056a3bc11ff70f3619ab5317252ee9eee77fd231314ab4db9d. 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/BRQQI1100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7b0663270ace6a3cc5f601e37fbfe1446074466fdd6d857afdb10898f54286. 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/BRQQI1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caca7caaf75832242fcc0c30ff5029ed77563ef5e6d819632ce3fc3cccd2ff5. 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/BRQQI1100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0333d6059a5d8259cde3915d54b44bd5efdd6a51936b43ead0f4dc06ed03704. 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/BRQQI1100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85154d24a46db304164ae865ba400fc554b2ac42f3183feb14eee7785cde1553. 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/BRQQI1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8eaea150c2a7f2235acc169d53c146b4d32d2d3e838592afe9e08fda1e46a83. 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/BRQQI1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eac037699d6a16e4191000bd6e2e0ad5b0d3e6c2378394072bcd56d96d19ee8. 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/BRQQI1100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dd3d85f4cbf7c1d821ee60f292f926d6da5e9e690e320e6dcbd0ff8e542fb5. 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/BRQQI1100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd811dd47566519c4018f28c856c3b9465c39991bcc0366794338431521a32407. 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/BRQQI1100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3b285b38fa0f2dd32b2989dbbc26d611ab7638a52e0bc336cf2769a43791d6. 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/QZHZ51919125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaf460e8d63f2f29894650d5e8e2b443733c1e8153f6cb7fcbdee9f60237466. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZW9L2415650.