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 0x571d426216a3151cbf469012397f12bbd30f18899015809a6ca940a73943aa53. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcdb00d8-6244-4999-a096-9b6d101d6cee.json and https://artists.proofprofile.net/proofs/artist/dcdb00d8-6244-4999-a096-9b6d101d6cee.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 0x6258e9f55d34f1a6f4b2fd69dc5883a4ba919da6c8d027002b261729448389be. 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/QZPJ32334425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e0f71e73fa8781578b7ee4dc19fa334155dfed08309da9bd4261e52bc77a7a. 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/QZPJ32345716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3123108c0d6313d796ea61afc72eacb537da555c07bcad322b302253e200e04e. 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/QZPJ32345717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd79250b40305c962a6a45b9eaf0353095373fc28899c84a7a4202350a4f18a8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPJ32345721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3c27020a1432db714d3ee10769ab400a3f913427cfa10679600950cf680e8d. 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/QZPJ32319608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7359d3a8a7b34274c8e7efa4ea5c97777a80fa6d545e524d301c3ce161c74c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZPJ32317720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00a55a96cb95ed558ad532dd5cd0873104448d24344b6bd1a94764eecc37d70. 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/QZPJ32319209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f79fc0f2c01acc4233e97a3382e6bbc096a5105e6aad8bc39f74bff565b7a76. 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/QZPJ32349156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3c27020a1432db714d3ee10769ab400a3f913427cfa10679600950cf680e8d. 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/QZPJ32319608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cb780fa53edcc9b314d9109799b2ebb0cbaee1c472ee80abdb12f4b7b5caa1. 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/QZPJ32244698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d2721e5b09974c85753c61bccc0d826bbc1f898f1fc9e458249dd76f011d3c. 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/QZPJ32268329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8c4d2ddd2fac7faac562a6bb799523b8cdde4b29dd6a9789538d5cd78fc9f0. 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/QZPJ32245439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9a6f732f99c97ced358aea6257d5d630ef70de36eaa27d908e102a2c8b30b9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZPJ32239887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3321cc97c08850e23edf027c69a1f3406c0ca80a3dcfe545044a619ae725c8b7. 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/QZPJ32239877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76174bcd07684d0e721c1a318628d3c3a817bbda3cf29a7ad96bd535df41c31. 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/QZPJ32345724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab088b44391f5cbe95ca6ffcf60083146c0d7f3fec2f0250c775e49749c7c86f. 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/QZPJ32345725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc9837d6ef2026a02d49db710955c870be0e587e7bfd1895380035f30fea1be. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZPJ32345727.