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 0x0a4e8b99a4eca4716a7fef3478075794fd4769277bc1f2180f37655ea88480cb. 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/fc8a3c08-fbf1-48e1-bb15-f4499153b188.json and https://artists.proofprofile.net/proofs/artist/fc8a3c08-fbf1-48e1-bb15-f4499153b188.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 0xd815df0e38a76a7b941a195adae03637497a367dd8d21cf893fcfa3b211a7968. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:34:53Z), 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/PTVI11600161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92eef81933d7e2e7093d82dde5c3b8f95fa59d6c8d7e664f32b28f59473604c2. 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/QMFMG1555575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc70972ff40a4ab36dbf6d8376c1a2b423443b9927fbfdb067bec041b5c6160. 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/QMFMG1555577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1943fad74eafe0a91fecaf95140e89dbc1153af6b41a34b753e16b9f3a755c8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QMFMG1555580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309485d15df0e177bd2a8f0b58efdc38dae637788d5511d73c5d2abb28d9c988. 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/QMFMG1555583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f070533a79803e95ddbc1a63a51b8084c169ceb0ddc0369c51eebdccfc552f3. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:31:11Z), 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/PTVI12200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2825708b4f9a23a108b72a7dcc68f96d1f9337bf89d7c0aae37a4a07d86055. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PTVI12200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3b89ef404664497153d1727c50e4d9c8c3e225c51434b910ea5dfd7de02c46. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:41:59Z), 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/PTVI12200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df35946672acf5b0151062837b5608d8d36168a301f40725d3f12968cf28333. 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/PTVI12200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c3bbb58c83dc72e109a089b76661b8f963d1b1374b7b992fbfcb717a9f1e2c. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/PTVI12200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8aa75255cf769edb190d9116e000b636ea93eaee2797ff8e0684fdc82143c47. 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/PTVI12200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621cbe33674bc7c3bd255409df8d8c912ff19054e6c711bbaa4e25027025915c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/PTVI12200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502bb52f5b6ce55fde5cf9bce9fd5425ef577a8a2767a20afdd7df720d448119. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:51:14Z), 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/PTVI12200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1446300b2bc55e900515e18d558834ca8a085bf9a6b4b9d9c9ba18f0066a07. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/PTVI12200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf0dfab742cc18fc7a356dfb078e5fb5cc1c68ac17e70d5fb85759a2b601c0f. 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/PTVI12200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9cb80eca41a3e85cc429abd417900e64452743b2b51037b569690c5e5de1ef. 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/PTVI12200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a66092b929e638058264df8c4d6321cbb270a1cd03872bd643e2cf77240739. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PTVI12200293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ab4df2506dccb5e64acb7c860dc857ee045b46f55f4f53f8a1862c3449d93f. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/PTVI12300347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781474ce44a08a708d17a5c55517c4c56c4507638e90ee54333a230a81993571. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/PTVI12300405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038dc36d71450f043408c42cc464c3d95d97023f2e3b0d988f1767bde3fafa96. 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/PTVI12300408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aca404d834bef64ea27b27a0d28307695ae636e669ed517dbdeb3d8876450ca. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:30:00Z), 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/PTVI12300416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a1e343d00bf039ab69affe736953dd9afeade7c10c13fa9012107c2e2d13b0. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:10:20Z), 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/PTVI12400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8d63fe87bc6c320ab5f89666bf8e17a001c5c502a645c6079ed8e2297cd81d. 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/PTVI12000484.