thumb|Foundation of Etruscan temple at Tarquinia, scene of the Tages legend. thumb|Furrows of the arable land in Umbria Tages was claimed as a founding prophet of Etruscan religion who is known from
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 0x475527cc5e95dc6003f5e7a57f148bd198c452f7047e704bb2a95ca4bdd3d6b0. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19027ced-8a1b-4778-af44-5f626b0bf074.json and https://artists.proofprofile.net/proofs/artist/19027ced-8a1b-4778-af44-5f626b0bf074.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 0x46a98a423905732059213feefe9224b67152c6e704a868909397777dec516f29. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:42:06Z), 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/SEAMA6548170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94d2651cec5352250d4f42d7c9000f4e142414fc6f7f656a4581c563a716232. 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/SEAMA6667100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0713ada3bfa230c11db773a131d7a73a70c547fae59534eac883e85733d382aa. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SEAMA6767190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74777574d1177ca7ddeec3a66b91c8dc0f89cc613d4f23e497bf46103658e13f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SEAMA6767170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3c840c81efe08306759dd2e7b3a76f2937618e3ee7dab65ff1ffd9c1fc4b71. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:46:45Z), 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/SEAMA6867300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5de328c412847882702a2edefb0540d11edf338585078fa6cc307e73aad19a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEAMA6567020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aaea6173ecdd5ead2415ff942add84bdb4f2e7c9a568c5df9bbe73ce59208c6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:03:13Z), 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/SEAMA6667160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb603331fcaf123359cf7b32f060e4e5335c652e3e746fb4f893c6b72609dbd00. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SEAMA6767230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf53b5917cb8baaa58aeefb141d44bfec6c4b25631671610899e2c7fe0945cf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEAMA6767300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0713ada3bfa230c11db773a131d7a73a70c547fae59534eac883e85733d382aa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA6767190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4272b4b3b7f75eaaa55a0913ba615f42d09535b26307ceb316765000d215ab60. 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/SEAMA6649180.