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 0x291bcdf5f67491209679eda096f2c7674e3ad73260185210ae7583f950f17ff6. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/319175c9-837a-4d04-8042-e1ff1a016530.json and https://artists.proofprofile.net/proofs/artist/319175c9-837a-4d04-8042-e1ff1a016530.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 0x801ed253a7922b97183867945c42e92358523830e63d6f6290d5eb07121f070d. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEZN82441102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ea8634160489e143706f15c1ca97b3358f83407836f6c6b35d6804ddf376c2. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:43:27Z), 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/DEZN82441051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1370bda569edf3d16d81ee13149cebf624f54a63433afaec6c666f02c96413. 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/DEZN82441048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f89a8d1a20f97ceb6cdc440c5f289cf4cde34337a6e70e1b39c9635fa71544. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:26:14Z), 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/DEZN82441126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa596046e20aacb8477a9ee69b37f112f411c22329b41f72a9d66ded1618012b8. 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/DEZN82441124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783ee1faf8c15a540ea2863d8cc25624d4641c3c02f1c8ef1155f68845727ed4. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEZN82441045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0172cf53be66cc5ff4356c8bdeacba231f13404320f5d22a8125236eb64c37. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:28:05Z), 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/DEZN82441047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae25478a93cdd8440ff996439cadfce2bee6eff0edb88bd1e47f27a309fc6d82. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEZN82441128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d11cd8008ff0010594325f1e56c2c359f3a098f43949b4e1db72c69d501e464. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEZN82441103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab426d072e402e332eafa716ce470f12e20c264e36bc6af9bc462f07c8cf119d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEZN82441054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261f334e10978b07eb01bee658148bea7172c4002f95752c16c2e9065d683c60. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DEZN82441125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34baef793296dde48f5de2a9f096aaa42a648771d82bb1c0225d7218397dab9. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:40:29Z), 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/DEZN82441052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb235694e8c021a09e1ab97a7bec0f57cf49ab9623190871857756a3450aae5ac. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/DEZN82441050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19c1d5e54489cec51b5b54a8b66ed5f6272ce2956c86e26094415967a985143. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEZN82441129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb235694e8c021a09e1ab97a7bec0f57cf49ab9623190871857756a3450aae5ac. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEZN82441050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b0318794d225384eab9666c3febef863866081bdec415e6f2bb5e8c576a619. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:20:26Z), 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/DEZN82441123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36103c273962bbc5de86c2486b8d01336a4970c835a2bfd871ee594af7769fb0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:06:37Z), 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/DEZN82441101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43be685940df58a347b49ae65df3d5b8d0fbcb30553c816371a0dc379bc205ad. 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/DEZN82441053.