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 0x70f5b87c9d504567e43ac6bfe1516e10ed15cdf26956354da48695147d7bbb58. 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/59bdcb8b-d85c-4bfd-813c-49ea94623e90.json and https://artists.proofprofile.net/proofs/artist/59bdcb8b-d85c-4bfd-813c-49ea94623e90.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 0x51aad4de6d478804f3658ccbee17199e5648b88e9ba973f6bbe8b4538b05df37. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DGA052368673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7cc6d0d24895a5f660d37fc1192fe4dc8bc6eeb393c24acdcaea11c715f69a. 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/FR43D2300885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33179e746803ee3e3154a55855dea7c47736c9770075c1c205b07a84f96f88de. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:10:45Z), 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/FR43D2300888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5467171fb7cbe6fc08eca68b1d9e1f27b3c522baadebfcb4b2c5687e0d799c9. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/FR43D2300768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80967364409d606eb6c1bbb273a48fb64ab07da50f0ca491a0432b31f8d4fb6b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR43D2300929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88df44c4c2a63db32fee778ee78a56096220c12da46b4f2ff426544ff387017d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:21:26Z), 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/FR43D2300986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7551d7aa6ac3dc7fed3c6a38c603264f3822c6244e618acc39704c82bd858932. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:06:28Z), 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/FR6V81195081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cbe9f24b5e9990858608784b632cb18ba838852da7a3d638da298bf88dfaa5. 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/EGA1K1915064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662b2062582e7038109012d44b68603a506ce1bfe061c9cc2b99d86ad858e395. 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/QM4TW1666785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f5cf57bbc4a77f442cc20f502065e699c054aedc697e30d89e5a3c88a4a9cb. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QM4TW1666786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd528b84185feac8426cbba7cd2513c8fa3fc7bf70b45dfacf465a2a431f7cab0. 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/QM4TW1666788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b82d475059d198bbac7bccbe350b9c2472169a24e1377c2ebfda96c9cf501a. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/LBA132000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7933d44651be837fc0e0810ce841bccaba39aab96aaa9e71d73df21121113e95. 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/TCAFY2137742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834264c6de5d77304a89fe4733844913a71d3a1fd47585bb4cbffce0b67023b8. 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/CA5KR2335858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe15edf8b02a3127d10bd61d88ea7e53686bcc4c88b595c1a2b0884d99f3273c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CA5KR2335859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf80c90927a0daa36ec41870e620edc7c0b07cde65aa5d4595de2c7dadeb689a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:58:21Z), 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/CA5KR2335860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25592287ce2817060e37e95c879a5e5012a81a4fc1b74c3495bee9196570dee9. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:30:25Z), 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/FRX202590373.