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 0xaf33dd275b1148755dbffd1b11707984e9d4bc231a377049f36a9c2d51ac49f6. 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/b013211e-6ce6-4d75-96bd-44b9cc0c74fe.json and https://artists.proofprofile.net/proofs/artist/b013211e-6ce6-4d75-96bd-44b9cc0c74fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x32dcd96477c500d5d05f567cfaebb5ad9e8bb3ad42a6b3ffd51c382c1d76c09e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US3U50641001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968b84d9a5fae7cfb121a34dbc32d6e920a9b91568603d15d29b9ae6ddf86204. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US3U50641002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2cb8a84aad0885ead4cbd6e34e162a32e1ef6f059ade90f560805e2a0c7f4c. 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/US3U50641003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea1e3ebee20bb3c728f3bdaf790f4b17dd478b9a7a0d3a0096f4f90e4a9dfe3. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:34:11Z), 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/US3U50641009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bcdf2964d10dd634941a38045d09eddb59e5afb391bf199a653c2806307d72. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US3U50641010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df04bd9fb6b9d07c699c5a4da45008f300276c1d6ba5141c36436517302f49f. 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/US3U50641013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bf50e56f6ed5c09b32effb197c6f046e7b8f0a3f330184970f53dc7fe16850. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US3U50911207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ae4a7cfcd7e89ebaa5b2479dec4eacb7fe1d9e2996d92a7fb44d8403a5f460. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/US3U50912011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc218596d6091c341f952b156714b9f12c10f8c6b80e92ab6e0a49922cc4254c8. 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/US3U51111243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8f23c30c01c87b0f1858f1e5ecc2f46249dac692d0f67199aab53e9056aa04. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US3U51111246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f29addce646f04b352c91c587df0b561f423c6628393a09b65a9926f48d8c4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US3U51111247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d2ceac65a513827dbac97c1aef8d161d24c1b6596166d9dc158a788ec1ef2b. 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/US3U51111249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658bd6e4927398913c067ad2a86d21bc35511ed42e7b811512f1804b79c1d768. 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/US3U51111240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85cc6f2239b88cfeb84b130817f5c821332ccd554c2b0dec1ccd72aceb2b09e. 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/US3U51112411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7100f63a09ece7acdb07452b87d166682e204557bdc0992afe8dc95f8a2d11. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/US3U51112412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70be60a02ba9a74e17e1d3f3852b439e897d832c02751e3382b91cc7a579248f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US3U51112413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14c3f8d2757430bc6ddbd23583eb9be47c52ac772d842e7cded61c06c681fc3. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/US3U51112414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c49e3a9856f17c6d4d844affd7a2af1fd432e28440597ca698aab4957ef1c8. 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/US3U51112415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752822ff75dedc59208bcf8bf1f120a57565a2d3cdf39d2ebbeb2ed069e474ec. 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/US3U51112416.