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 0xe2ffd7e00abbb62ccfe985e8088431d19332d27e9502e31146181dec31477698. 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/b9e676a6-be68-4729-a799-cbdee80441bb.json and https://artists.proofprofile.net/proofs/artist/b9e676a6-be68-4729-a799-cbdee80441bb.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 0x13aa57fa44e70dbd8956dedda2cc0b8499db7edfe1a294ff6edb8a168345b553. 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/USDNB0727605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2f02c30c83df8b127120fdbf16f52329d2a96895b17dc219fa323727a497d5. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZES62025320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c75439fc7a41da3438ee534ecfb36be4ddf1cf379d15d054f50ecbc74bde3c0. 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/QZES62025323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bcb25d65068bdfe7e985f77ea13ba7537419610b136f53088a2ddb0482577a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:04Z), 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/USDNB0718013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8a8cafecb74598cd1e7d29ede001cfc52297bf4b224e11301b377a564601e5. 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/USDNB0718014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36335beda74ec3ae10a2fc68a22105ae50a5eb81b04b8aaa3eeb9a52cc87daee. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDNB0718015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bb590ff244c1ad21b0799afd78b5141a734403eaeb60feee8a2fdec99bf24e. 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/QZNWS2023886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89910421d0f61ec170b81db2fcb9a451bcd5eac9295f0b0b3813e20c7d3d05ef. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZDA82051016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168997c144993b172626ba3a85235023de98d72f6c95ac48c3803a5e201dfd8c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:36Z), 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/QZDA82051017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f0fb0650d582e3924d44fd222e089c4ab4d6c79f6ba2fab55694a18a383e9f. 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/QZDA82051019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e74141190e4bb57b3715b4beea83df99fd8d8a010234ccb5f4598702fff9af. 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/QZDA82051021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12862e4737be36df02dd2a57156545df7e005fbceffda40561bdb68a151723ad. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZDA82051022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996f5174a288cc673f907f36f71322cc32b44dbd8c711c891517f1abeda77a35. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZDA82051023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43488d20a1bc18b1e556d845abbd0f9c68c0091df18e64efd2cd0f16110ff300. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZDA82051026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abfd88008f73dc6b9ce9ecb4f8782fe686b7c66983ad2a1e9c79813d5d9adc6. 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/QZNWS2076073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a02ffdb4e3091fa0d8df77f48a1e9da2c7d7f83999a5110f1a8f610733c3ef. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/QZNWS2076080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96ac60bf4347ba18fde364418f3c84454909bf5b956354d44c5ccda280a585f. 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/QZNWS2076085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de5253ff90ecc1aef399ee95f7e4fb7bf35172ab3df45e0568190a612803b8c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWS2076086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8780a5828641a6a6cdfab2107821a59b5f3cd254aec5453fb274abbbfce26864. 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/TCADQ1850823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1b2910f316fd19f5591734a35a8fb664e94089c353c37d68bd181c146e8b29. 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/TCADQ1850832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3624e7f55c97ec59bf4563b740044bfca6fbc1dcdcf6db8401fad249dff906e9. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCADY1807946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0706f755e146802898a07002b26ba5cc9be62b32713991352c0f6f5f1f8d8216. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:25:23Z), 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/QZES62027983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4ceb914b31937048024842ab87bff680e6362dddc0c70241d59ba024583dd9. 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/QZNWS2374586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb022ee8e046b96082c71043fa21b51eb049f3139143cc54c1ae659d3b06e08a1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZES72596306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9635b8e9680818ac81d0d569dcb48e7890e6572e0ec182ca8498185c3bce278. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:46:23Z), 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/QZRP52554425.