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 0x7527397d1e422f0c51ab55479b86f43872346763a056a5c45dc510ed8f70d526. 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/d727d1ef-6d57-449d-87e6-7c5498c9a576.json and https://artists.proofprofile.net/proofs/artist/d727d1ef-6d57-449d-87e6-7c5498c9a576.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mismatched: Season 1 (Music from the Netflix Original Series)
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 0xac921c4d8129eeb875480008304a0bed9970412375d1ebe18461745cf2f883b4. 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/QZ8BZ2000713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d02598eb9097c5c2486165a1998e701f173530c9888307de03ba9b38cc6064. 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/QZ8BZ2000714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26d78d77e30a284eea1b1e45be3f47460abd88badeefb3fdad66e181db1d45e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ8BZ2000715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ffd43092d9a0eb8797b9a307d04000536918a580249537e30d3cd02baafa35. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ8BZ2000716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaa4231e1ec6e04df115bd8003c635d4553570c763ba13aa85d773b0fdc04f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ8BZ2000717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f27c0ce028fa3ecd0362c2957da226e2728f4d7dec1eb533e52b43c0ebd09e0. 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/QZ8BZ2000718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a876cc608f14a3bb684c34914a97d3aca3391fd3ab236722fcead2f97b46540. 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/QZ8BZ2000719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f670b3dabb463c95d5f2a014dbfff21c0a9affa6d308f1994701669411509a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ8BZ2000726.
Mismatched: Season 2 (Soundtrack from the Netflix Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce254215d1715057ff6c8eecf1fc96ad019181d60e792ebe4008dedc3286213. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ8BZ2201989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c93c38a07978df819d8066762e2c296ccc8cb18fc0a749f4a58f299a9dc3f02. 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/QZ8BZ2201997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa763daa951860738d1f4d35549d3dd2e68878163e1de23a7bc812af76b775369. 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/QZ8BZ2201994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5253e2f1446ed0eda537aa3b92410524910a926789975505ea56f24162583344. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ8BZ2201990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03704572f6c6058509250aee3592eb74b201faa876e5d2b8a9edb9419cf07fc. 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/QZ8BZ2201995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752d3731de81945dee67d29e2be93402030e6b145e9d2325ce94c5d64c82fc9d. 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/QZ8BZ2201992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cab9db68fdc40eea3d4bf7db7c35a2ae8bfdfc63fe4ced16d3c7737ef03bd4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ8BZ2201991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7941f1934f47ef3505b3eb312ef7d61fd42f0e0575bae339a2380ee3bbc1b3f4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ8BZ2201993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901beb9fbf145a53872c873fe9f9823ad0c12d74c2c4d5ed977c6d95321b26d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ8BZ2201996.
Mismatched: Season 3 (Soundtrack from the Netflix Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c01061a2a0ec11f36805cfbac198111a6eca034b040a5492e4078105523ad1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INT202405090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a63264050590515286dee230382e1a9a858832642db09d11793a15f9ea7ff9e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INT202405091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffa0dc001ef9d59cab0103881102c7583209a3aacb338d313c788ba6c159c96. 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/INT202405092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457fe7e02da04f436346dc8735bce448567cdb4b734a74f2ca4c392c3c368c20. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INT202405093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abd3ebfa449893664fb7806623638deb2b0ea6c43785caf3c5d755a54f80312. 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/INT202405094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b81f6f02394297a086b9f0d4794a34e70a6b1a930894eaa375325df4c280ceb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INT202405095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf376ec91b43d698c3c7f363a39be8e204a651aef913b7d90f78a81fdbbc69944. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INT202405096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8ee45a04b77f0ef77748b6af7e3dbb40fd972f9fd677c18022a0c0578de11e. 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/INT202405097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5fcb4e310b93797f2fd95de9e7776cf3c3ca5123f06e18103d8ae85a55d9ac. 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/INT202405098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4377e1980f85f60a5250923a4d8d834d0fd03d62704fa86e7dcb557afff0dead. 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/INT202405099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4e8672c43a08607e7809ff3ae897a36de2b620e85082269921f3667d68b6f6. 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/INT202405100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bd7cc91486c0505ca49c16477d2bc728e9a684d91ad1cc51ea07425b70938b. 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/INT202405101.