1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x19f059df0e5bd7f37f4e4046afd3b99b6f05432f1901d1fc3bb949534c6da36f. 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/26eed5ad-3dfd-47a8-9c3c-83ec66a8cd53.json and https://artists.proofprofile.net/proofs/artist/26eed5ad-3dfd-47a8-9c3c-83ec66a8cd53.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 → block OTSBitcoinBlock must exist at that height 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 0xb879921b52b52bb7bee7f08c9ad0b5d816bdb14346acd55eb979cc77fa0117a6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:34:59Z), 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/QZAAJ2101672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202a4176ce82285950ad33b2e9c50c8d06ae5e15e579f3d9a40f660857d0accc. 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/QZAAJ2101805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b09af50947db23bf66866a6d36e2f5cc4f95b1e80eb3f879312197dca8cca6b. 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/QZNWR2181208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c0af762115a2dbf819098c4de707b6991c55d9f523b4d1c6f080ba64e74a6c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZAAJ2102609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6483b3bae6b963859d9c49cc1d7239be8f764eca0b2534115e7aff9b4bada6. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZAAJ2102323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948a821f8ade5ceaa4775e034f290a1c9176a0d4fa336bb20011fade00ee592c. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZAAJ2204189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133a69432c6835382d2795dc1c49781add31ee91cf76db3df8807eda4e35ba9e. 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/QZAAJ2102317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db312622d30b04956e775070a19689341150e3d66f119ac60b1d7a1a8821e6a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZAAJ2205366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b732bd6da6c299f9d0bffa24a6a1684b32fe898d93235cfbeba2397bd09d37. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:44Z), 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/QZAAJ2204552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7091ef624f9af9a0f2c76c42f8505ede819fb7234ca2540ee95dd7084824e3. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:21:52Z), 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/QZAAJ2205149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92db1e9be42a6f3052ad5edeea5fcca2a8c6dd9059f8ba88ee054a6e849fcdc1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZAAJ2300258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec01f547220af416915a7aaaad2088e6f46cf21537bbb432b0bbba74bb71d9a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZAAJ2300968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1c703dc93ae27a001ed5b820136ad81c25f2c90e3b9fed74b737c56c4206ca. 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/QZAAJ2301221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67545b6d06571454c3f5623e97d1f215b3ea057ea872bc47391d1be3fa83d53b. 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/QZTUM2407001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ff9b1e85120d8f98efbc37de58a26c6b7e6ccfac6b6b8368e5fec2092f92cb. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:36:21Z), 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/QZAAJ2400328.