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 0xa670d9099449802f5c767ed0bd94483f8fa3e8d3251deac59da6bb411eca37d3. 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/1a828511-8355-4f1b-ba4d-9c8c34b63f85.json and https://artists.proofprofile.net/proofs/artist/1a828511-8355-4f1b-ba4d-9c8c34b63f85.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 0x15820910e66d01dc37e287df97b0348e14c0b23f961841a5331c9a2fb848d9f5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RUA1D2153721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9500e41182c8e683fd5f43e84d1b5b1c9fef56d3be6f6ed778fcbc2dab67932. 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/FRS182167509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe399afcc6edf4ceff9518b95fdea1ddeb061d6ecb7ae3453018bcf2620681b. 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/FRS182167510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed3730e029b102378b29a5ea6a38ddba24f32ca473915d4aff740189c452598. 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/FRS182167511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e68a050bb742a8552b607f6ef2128cd86f67e1fdb8fa24aed07854acfe06e72. 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/FRS182167512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e48c0ed2a0f64ce9517b2e588fbadbd55a6ca585beeb08421d1370bd22aa580. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/FR59R2286614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3c3b996c48b3af43d875720eb4f4409fea2c44038de231221abde15f21ee49. 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/FRX202248163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ff2e1263a34bd1e589b18e48905c3467b5eec6152d7b1433353c80ee22b5f0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:34:09Z), 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/FRX202248166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14891f8902a0c44bd466715c41ac566e37dd0d9a412523546f323082e936a2b. 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/FRX202248169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bec2c6396ec9940458fd940ed8c7d08dba08681b2009051679eb7c0f4bcb995. 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/FRX202248170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea92fa0bb0c67e6b92122d46c37ccaad2db9f3890920e77ae0197aa3b2bc0b2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX762282837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9a7a4f763aeaadb135edab6555bc285e613d4929002112be59e36c33ebd429. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/RUB422400972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bf97bc8e1a001b26027672bb252ea88173cd0e95f4de5af9adec16a594aee5. 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/FRX872450396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7700dad68f5119fa61ff1f42cc05e81228845932eb2c6cf8e52a39eb3274f8b. 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/DGA0Q2493591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a159ddc384956a93e53213d58aa959ee2751195463af6a18a89fc847ac7fcfd. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:43Z), 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/DGA0Q2493593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe5f7a47755d412b6b1e6014673de348f21b2ac9113c83d6a7e4f0b5cc9c370. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:33:18Z), 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/DGA0Q2493594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f18857fcc36f18b3ae135a3377b893c7259f2c5e45415c8a013ec2ff9229a8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:37Z), 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/DGA0Q2493596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a0d836a4debd4ead795be1823710548818813003d7df3948e88adfedbec231. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DGA0Q2493597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ffbc929e96e4853027ae61f0881c68b2953a1e0eeb20d42072a115c240b606. 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/RUAGW2500729.