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 0x0d6990643bfe2d55cc21795ca1bc86df3b3e56c9d9186824e70e387b3f95125f. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78d22522-7171-4226-bdaa-2606c8b30f5a.json and https://artists.proofprofile.net/proofs/artist/78d22522-7171-4226-bdaa-2606c8b30f5a.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 0x891c30f309c76877d106d819973a6e62596746a91f0631208f2327230d57d26b. 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/GBKQU2198894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72162a20f8271c50ae5b000d5786d64ae4ab73767aa3c4f7bdc6eaa3c2161101. 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/GBKQU2198896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d53d1ecdcf59284bb9f7ad351c01ffc118b66f4750d3549eb3b18c2f934d40. 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/GBKQU2197490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29392ba99438992b2337a3f64bcec67fda419c72df209b2f4ab3cd3d025c3f30. 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/GBKQU2197494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee56df1f2ddb9f315eacc244f90ed1ac19ac9612272e5697a19989484b82afd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITBHZ1501028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327e3f2db888c5a9ddaa2266e7575f555117fdd2f08c1e75b09af077f10f09c5. 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/ITBHZ1501032.
Jammin' with My Grandmother - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb850433c2c4aad7d6048b3125e1f61335140dd218eb7affa22c33b189dbc4d2. 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/ITA061302023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4579a9f098f4a33461bbd7e34069decb686c69fa19cbdebdb4f3720e396c4a. 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/UKJSW2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab2d2d68ffb4bf4a1b2f95ed63ca7a53c384ab1f436a024796f599ef5023e3c. 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/GB6LY1601491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab2d2d68ffb4bf4a1b2f95ed63ca7a53c384ab1f436a024796f599ef5023e3c. 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/GB6LY1601491.
Singing With My Teacher About My Mustache
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59b7dac05acef82b5a4c05a5635623e1dc2080963d59db12a468a9bf61e59f1. 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/GBKQU2243656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930e32f70a2e99fe204877172c720c40d88a97fbf8eb31b24d9448b8ba474167. 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/GBKQU2243659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714855685ca071f95646e69755d05f179bd4dbd9a42be367ab3d15ca075070fb. 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/GBKQU2243663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9228cd03f8f5fae821625a2ec88796037eef9812fcc49e8803bce46bdb623a9a. 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/DEH742041325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1460aa8852a7c96a52bddbdb4dd98a7bcebe2871e36d8c9f0490793b912b6c61. 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/ITKG01700160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edead9846ef646da470083e7ae097890d222590ba670f4dc555a7dcb881036a. 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/ES94G1710001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f760b487250ca282f737db2e40a28297e90e1c696246c069f37d54a3ae7049. 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/ES94G1710006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b45a5412c35c91c82f3ef7271b17c01bb65a9a82eaaa2eb1c6ea4aee57dcf1. 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/GBKQU2531571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3934f388df6691feb691860ded897385a2a1d2a0eb82fd66a63d488b6b00a34c. 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/GBKQU2531572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74350a86a2519132fc4236ed204d6974b6c0133bd10f0e2ca2cc49be641a99b. 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/GBKQU2531573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4f5e0ea5868c48392c94a31d99a2ba40274d56d0ec18a20b1cd4d0646fa200. 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/GBKQU2521684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0f3a3b2cab1c7701227d7b58eb706c41a4b1a62b45f29e20febbba7d43efd4. 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/GBKQU2521685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03bacada4e3340799b9a11cbe942e5a16d8cd9abfb4520715c9ceb0296b2451. 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/GBKQU2521688.