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 0xeb6b708f55cb11c56e336a8785a8fc93d8ef31f77f6b9b39f9a581b0dabfb7f0. 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/bc3dc21e-27de-42aa-a621-934b95d41fbd.json and https://artists.proofprofile.net/proofs/artist/bc3dc21e-27de-42aa-a621-934b95d41fbd.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 0x19a95f8944983e64f67ecdd95b3f6f32938d2bfeaacff507a0557daeded1da91. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6F2378017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e5ff7bd5ea012b28870f4d69b0251ba900db46402055147fa3e6c93457e0f1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BK4DA2301805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406fa5e0a99c20c3cb6b0d3b150955fa9d6691e562f3a60455303b131e9048af. 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/QZW9L2240443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06439e6f9bce4efc6fc9be84b7528460bd4e977660ab92cf43e8c417222882bd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZW9L2240427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443f32186606208959095e02c38ce9402e3842ab073f87d00305a9aa3a639951. 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/SE6XX2256454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f3465026bd60d9c710ee9f54c692045521f2f5445aa8d75d6b822e4dd050ee. 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/QZPLS2199192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8aac8a1f7209c39045a5b530d162d152606ca1819070a5d0f0524322482bb77. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZK6M2150908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81015974b79885813a5c548dc89bc18236602bebc80e58887ab12b9cc5acb059. 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/QZNWY2012552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57def15721371e9f60dfadac9780b179b2e157312c4140bf67cc173b54de27a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHNC2017896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac50644df606ef6e2838939e52eee2f10ac0ab5e667298b7c76fc67d579ea26. 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/QZES82044870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e9b46878c7de5ae2faddd34525f5a10897810a08fa44d7dc413117d5a31d09. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZDA72058649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2e5825f80c6b451bdee864916c31e0d0fef84b1a78f1934f7e8707fe147cb6. 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/QZFYX2043265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575c118e9f047f2e81d6b536bbfea1eb61bd3a694d898aed31025ecaa876aebf. 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/QZFZ61957475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6238bb585f5a332606693425c4b1edcc461d7229825569f5a3716f9e865d8f3a. 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/QZDA71932389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9f4aafeb0fe48006327e3518e79f9b876db39055cae3ee02b173bd9ddc7bf9. 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/QZES81800194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa636e152fccd76bc20d3c62585af55239ff8e0631c04ad5b316b49a6437cb5a. 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/QZES71880972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fcce5232c18e8a8050d8ec9b24fb25bbe7ef8f16eb090b208a0045a6b89acd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAHS2389507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bee1f82200a587da59a0e4873d8a213778570a4e78309832cc60a4cfff25faf. 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/TCAHS2389516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb193d6da94025a2cd91f6df899e4b4070068eef092f0fba2a1871ebc9b239d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAHS2389521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680ba56f34c93d310eaf255bf1c15d3126bf79c3f0cbefc14d37f37c5b4856fa. 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/TCAHS2389526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7629741191c30b467e65d59a726f68bdbcf4957c4cac67fc520ad21e10c82f6. 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/TCAHS2389530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f1827efaac26e115d8f7c858a2b5b7b332aff5a8f9d6b93314f1a7cc3c0821. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAHS2389537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a08c17ea8f466d5ee9bbcbaee40ced8aee181281f6bd25046d5894f09060dc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAHS2389551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c7ee6be7b72cf3aa7560293091fd7ab8c283fa707bf9571befcd96a3fc1df0. 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/TCAHS2389542.