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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a48d8534ddd10a80137e829a2008a3d53e10b80f57cf6e6dc85b4e723663487. 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/4bf2ec26-80c3-44c6-ba3b-edc67c0420d3.json and https://artists.proofprofile.net/proofs/artist/4bf2ec26-80c3-44c6-ba3b-edc67c0420d3.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b69ba7c0992d042dcb53f02dfefa48a1831fa9b095bc1fe8ba24126ce7f7f6. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USSUB0310116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87f8c3f6e774b8af3681926e8ec535b93e9b71db946d40574900dc126a065be. 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/USSUB0310117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddde615e516b55571313de3596ea0f6ad21a2b95fc8072d31710f8f65cf612a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USSUB0714401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1b19e0717bdee1a7036a79ea224a023d6f3737d8bbbca94597e7c63e6537d6. 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/USSUB0714403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa5ff6ecd2b7bc58d6df7d7ae4cc424af8ae33e7d37f60df6789525422d5f3f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USSUB0714404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7fa2f51c552a4c3a558c2da84e75bdca1b9a83176d08a115840ea82668884d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USSUB0714408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9182421238907ec11a57406e0ad47b913cfd977c6028d50ec43cb14ddddaef. 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/USSUB0310331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78fc15428a6c87cfd078e92de9b531e64095274ea424b994413eba99117ecc8. 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/USSUB0310332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984d96f33214e96b86efeca91e4bb3ea7d17ed8025d5ce1c8c56cfe5d24debcb. 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/USSUB0310333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b750c2a0c91ef7da1ad99ae5fef94762bb975a715d3bf8361e53c98dd8f3d88. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USSUB0310335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcbaac36ea4ad5b1d6f5dea02b9d3741e41d18277c51f0af7029d0155032af3. 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/USSUB0310338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7343d911c2eed0851352290b96f5cece8dbeb529b8671e7d307e3ab50a45a16f. 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/USSUB0310339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af5575c3f24b20bb758fbbae9dcfacc5707d0d4d69f04c660a84878b9fd7b9f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USSUB0310340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4b0b54201676f2e6fddf50f1c6118e67b420302d0a4807d6b7c482926df112. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USHR19500901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837f773df2cfa4dc6e0500a8a2f70e61f4ba9d486959cd916ca1bbba6c6870a8. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USHR19500904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6187826096b2ea0d1684de023a9052f77d616e498bad9bbca973ea2a7867fc4f. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USHR19500906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe55114bc416303ca88661033f9b066cfdb69e4fa4c6ae11dbab0756ad82d665. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHR19500907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556fae7808f8b86ffa1e7c5dcc82615da5410ccf8e23485a8593196690118853. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/USHR19500908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415749bd8f2c8f4d8c218f8e74f492f427d8115fc3999ba5d36bd34200a94fb0. 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/USHR19500911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92b3393ca9d6e3b92e3d41e50b8382848c718869b151ee6f99e6f826e263895. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USMRG0329004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8e925ab8772feaf6f35342435f479a3b2633b020b8886fffb884f777579197. 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/USMRG0329005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4116b5113588b15ed80254131da43368dbe1bd062ce0adf870316feacb78b8c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USMRG0329006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c813c3352f8c81b8ed604ca8f3de8d49b2381b797c2e4e08be7c85ca72757f0. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USMRG0329007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3db0e4239b26606d98df0f2765bee8089076c68114e0616b7c30557b91e205. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USMRG0329008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f0f37c15e4cc6c64b1aa67fa386a17dc3c3f6a66229e475e8f305a2693e6ae. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USMRG0329011.
Oh, Merge: A Merge Records 10 Year Anniversary Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356cc830f33ae1fcd392a47d9d4601e29a6ff052c9e0bfe5b7f8d64b07b8838d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USMRG0329012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7a03134611022c1baab1515237601f1ad8284a1de12810a06e19e87433e624. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/US78S0508510.