thumb|upright|Mosaic of the Minerva of Peace in the Library of Congress Minerva (; ; ) is the Roman goddess of wisdom, justice, law, victory, and the sponsor of arts, trade, and strategy. She is a
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 0xb6e0e5913b02196e1dd59523c023368d97bb4006a0a91bc587651ff4264bc1cf. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ede1ff11-f269-4442-990f-58f57ec45ca1.json and https://artists.proofprofile.net/proofs/artist/ede1ff11-f269-4442-990f-58f57ec45ca1.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 0xe302de79a76e3430978dc6eac915b9e1f5f615e8686d3adc62ebcecc6b42e701. 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/USCGJ1994818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf12a940a9f61091a6b166b83af6cb8f323a2490e46ac1fd4df3fe3957d1fe87. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USL4Q2231511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a27bdd89e443b9988580da6df30bb966c8c82c08a2e3243e3193eb8e8a9780. 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/USL4Q2231512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2968c070b5fd2359092b9b9edb821504d030f52bfe9fe9be4e85a7408b600b3a. 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/USL4Q2231513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6347957a8adbb397fbf05ed024d4b73e0d9a57b706a930e183ce6708666f1c56. 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/USL4Q2231514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8216e91e5595f3aaead10f3149466b479d06515a6c9d0430865b9f904f87da5b. 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/USHM92215011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155d92845016e918a5e3a232ef68ce3158e14421c459818999ddf74b80fbbf86. 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/USHM82287260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb096a40612f1d72578e8d9c2b59d6c4e331702af5dc45a8e8e6665a4606538bf. 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/USL4Q2231515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc164d992a5fd3380187912369d7d66c92ef1e5de0e8d6138647c1d65d0a2f0a0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USL4Q2231516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078fd6f3878e505782bb8a927c40f60f22d81c6ac4416febe50f88792b40ca74. 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/USL4Q2231517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14839d0cae6c42e29f484e4c8cfaf29dc064e4b19fc0d1cae36ff1e9d456415b. 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/USL4Q2231510.
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 0x4db18c670e1960c320bd57c27ae8c696c7c819bed5bbd1809e518c5e21eb246a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:17:10Z), 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/USL4Q2479595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4382537addcb2f8e653cf2d30c6c53362c13e8532a70b1f0388be4223a3e6b0. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:00:37Z), 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/USL4Q2479596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723c76e0d811995ae5e5de64a7028b3e48cc687f1526dcb9912217faf3f88f46. 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/USL4Q2479597.