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 0xdc4c4a3371b6af0a9c33883aea53be45495f4a3cb43d2e089d70030d293dadae. 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/7cb31202-f316-4026-82e0-aea35f644f72.json and https://artists.proofprofile.net/proofs/artist/7cb31202-f316-4026-82e0-aea35f644f72.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 0x43fc4fb1975fbf1e3fe9e7b4a217286524035136f6720bffc2c6a344cce6bbdf. 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/QZNMW2237406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3925515689995f0cacf09811823f518c2cb856a2ac8268f96bb946f5de6d9b9b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZNMW2237407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25240a82c28db22fd6a4e8e580ecc28a02e60ef3de011c4283ed62c97857669a. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZNMW2237409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25b7198a55049e2de74dacc40ace77036f245e903e176a06ad833fbb7fdd784. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:04:13Z), 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/QZNMW2237410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d51c725f2e801094bd3ce5c0ec37eeaa67fb5cae43c5796e1eaa049d96c88c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZNMW2237416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0419ff2e0e636b757a0778c024a6815dba92cc0cc5591071f1bdc99a8480c2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:58:16Z), 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/QZHN52393013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca94274be1098d11fb62ef3c6618b94d6b4458a390057cdc0ed81e2a5b5be90. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZHNB2348277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3410e185652fe2ec1f4b10eed24c00b0a05c97e91e3116f7c2e4623afcd0274a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZMWW2321201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b70ea991fc95b8a4b0e15c34eeb24bf953bc012d3fcdc007f59e508365a583. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZNWR2440459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa9a07fac07c8dbf20276f73522f88c5f768f1c07f16ddde9fdb766ac26bdbd. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZES62489529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdb1effde5af10adad4031252f86ed6d70255b6a4a3680fa94d29bff759dc06. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZNWR2425598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23c02364ca3683749dd882378c7c3966e183f95ac5816f006dafcd0d3fff0fb. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:51:12Z), 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/QZNWQ2482180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4d671a418da31064ec5824231d49b37d1c1a101b6d0d8761c9516e480dac7e. 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/QZNWQ2482181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17f235bc3d9733062dcd0c73d8788b01bfc7f64ce22c6ebb63203b201b40132. 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/QZNWQ2482184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f47f00b6361bc3c52a421e88a9e9191a5fbda2893f50de56c82696f531ce6cf. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZNWQ2482182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598b3d3baae1987767e91e3d5853e54267100baea67666dddd1091f40c6cf46d. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:11:30Z), 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/QZNWQ2482183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e11ccbfbe26ad14e65cac60cc1c10c21377546be4157ed0aff55d601b55efa. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:06:19Z), 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/QZTBA2316579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3410e185652fe2ec1f4b10eed24c00b0a05c97e91e3116f7c2e4623afcd0274a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:59Z), 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/QZMWW2321201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7c8afea029a46b63749700a4cf39491f3cc1b1f1988ca901a4b5739dd633d9. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZMWW2591859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eef48314480ef7038573ce85901098e467dd1d49cf9651d9edce391965b708d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMWW2591867.