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 0x1bab0561401430b10f2a6c05a3b066be0b9407f7bb095d2a58cd19c7308fa830. 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/2c82474e-a196-49fc-8f09-65fa1906671b.json and https://artists.proofprofile.net/proofs/artist/2c82474e-a196-49fc-8f09-65fa1906671b.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 0x28c5b4ca3df0643563abf8fab71f03253c11f266f1eb76b53a1a8dbb83312f15. 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/US6620500264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf857cfa9c7485ff9d66e3c7c07d75fbbefa357716657a6447f575473f97a86c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US6620500266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4d9bcf63ee10d9b4226469b83cb9ac4f9ad617653921814d81f1d45206f92b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US6620500335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb2a1849dc0811de16c1468ad690e41901e972c5a2582f2d75bd3446e2b2576. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/US6620500336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30211ab418cfe43fc5122c085fa8096fd48b646dc02755b6e0182bf8e7db2df3. 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/US6620500337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e0a4e0a6777358db58de11b9f333ebd4070186ec51b2f021f298836aefdee1. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/US6620500338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3686db97a5c19e9c17b9293d6e68fa0cb0d41dcc4e8ddf62d0357310ac0f0168. 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/US6620500343.
Heavier Than Heaven, Lonelier Than God (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005f9c7c6328db1827e67a16c8c649243a650b0ce307af8b573b961cd1b1b3bb. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QM6MZ1476516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0652531091275b7b3358561f595ad551fec269a83dca6ab30de48c03d22ea6d. 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/QM6MZ1476519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cc633dfad93c798f884e2273803c55ab422b0dca46bb552b52cd6feff20dda. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QM6MZ1476520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6c1c62612f0164c55707e6cf4f47143fc4fbdd262318a63e02a5ff46cc533b. 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/QM6MZ1476521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57e5d9601e3cba4afde287c78ebe1b1e0966d8f32f82c358a7a4ec551d7a609. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM6MZ1476522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd03bfc602a1c5ed240f2162d1b641ef7980cff38cb6d8cd382b6f4c8c65035b. 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/QM6MZ1476523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f3eb3ec5437f633fadb9128e9103f0648ed65f908f0a8b673fd9a703103c1c. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QM6MZ1476525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56c9ead90747bfc0347baddc53f5834b100361eb51d71727a5defb9db87cb33. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6MZ1476526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6554a0ebc64d684eb7c72b0148429abd00a9ff5e3dfafb7e5ecc3fdd7f78e5d. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/USHTV0810013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b16e0ce2a421ebf6983bafda62aae1513290c79fd2b450a8b556aba95c3bbe. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHTV0810015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f98a48d67cabd91a711033e300617497fd642aa1cb75d8ba841d86ed5b303f. 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/USHTV1010050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcf637f511758310fdc17976ee2ace0251a4a3f946f211a1c96e6cb62787103. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/USHTV1010052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300acfd9294e304c6ca59a9aa5b343145b21f95ca5cbcca2d8295dff4bb4ccf5. 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/QM6MZ1467692.
Slow Moments B/W I Should Have Been a Murderer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743c457fa98bfaa89d0d26152abac3ec725b1a9895fee9329a5aea1d6929c6b5. 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/USB4U0400047.