In Greek mythology, Tyro () was an Elean princess who later became Queen of Iolcus. Family Tyro was the daughter of King Salmoneus of Elis and Alcidice, daughter of King Aleus of Arcadia. She marri
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 0x9acf8e387d2069651dc4b2dad3780c4f874264afe801e6d054be0a9d5495d3f9. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91ca9474-d3b1-4bc5-9ae4-d4ab8b9f813e.json and https://artists.proofprofile.net/proofs/artist/91ca9474-d3b1-4bc5-9ae4-d4ab8b9f813e.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 0xb0635acf92d204737e5450b930050dd9c08c9aa67368fc9ef084d1e0754a38d7. 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/NL8RL2413109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e013894c79d26a1c7b746625926aa9a5c6a6d953d47905b9788e9fc7eb1007. 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/TCAFW2109731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1ba74c77ab3d22aeb8a7616fe68966b429187f87f0668a007390460afb15fb. 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/TCAFW2109735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93ebbdd5b2026a4f3190056ef3ec3d524bdbda330e00c0eb60ed52d8efc8b43. 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/CA5KR0011772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339d156f25e5f1b94f7743954dcd1dd14188cb882e5818ba69a3473fe0a39265. 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/CA5KR2193462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07abb19f20aec24ece35b7d621a86e42ac8786a702ce10397c0e99ba33cd9417. 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/QZANL1749450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa616826e12e8a1766cb189bb1ea209943b0fcf1755521e379fa7fa1919e59d93. 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/UST8K1791433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3509f71a345b370a3f048021e4e05fdcfa9b6bc7d20c5046ba46deec51f04bb. 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/QZK6Q2296953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa564a8e08c3c36214a67476ff883c64a00518804ede4207dcbc95136a4ee7c85. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6Q2296954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339afbebadb1e37cbf293500be93d5080481327388ee5fb5ab4e08e8a72173d1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHN72215757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25336481d3da64c48bd65532ed6fbf2ab8e61851cff8d32affa2bd8b6ce00b91. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZES82226442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c3bfee5448d71131b0e480bf7156f7a5cf9964a76fdb757b11d25d92ee33b0. 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/QZK6Q2296956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b77f6743faf347dfec54d7cc9380f7297dd8fc6da9dc601f2b53cd5982f85ae. 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/QZK6Q2296957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af7c4b9cd556251d2a6f509f2c81eb32775b276e1d1b9fa452fb38c2afe0fe4. 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/QZK6Q2296959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1f36f3b54c6183392805391f5cc1b0a488dee33af55cbb052653e52a3c9689. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZK6Q2296961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d08d38729dda3179f06854838697b638d3b7b8d4065b2b7d26dff55d1c28bff. 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/USYBL1700190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a066d6009e1250e70953f6257792037f1b23b13a719b96297281f70d3ef0f89. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USYBL1700191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fe524e4e31623b6e65ff151aa37021fea5d3826b4378cc835f9643a513e32b. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USYBL1700193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a13835cf15302971f3e652fe58c13e2b730595acb231b23e13331a9cab71dc3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USYBL1700192.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4ed2b456fd102d68afb2df049672f3ada7de36259ddf9f3f3df1bfbf48ed74. 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/TCAEQ2003931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc400fd993872d29b3bb5c386123fc293f49984958a86c830d4f5dac6d6c9e085. 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/TCAEQ2003941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a19cb2d2c7adf2bf53b16b044ea9cca8ae3a25a4159d5f710757a877c17969e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TCAEQ2003943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5feef512ef4e3f3ea6f99d3073f919fdd6aa608b863f9a8c59159f9a66eb6cec. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCAEP1906237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff9e786e741d8e7c13ed3bc0261b88ddf7f25dbbc48742d27084f60ae7eaf4c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TCAEP1906197.