Antal may refer to: Andal, 8th-century poet saint of South India Antal (given name) Antal (surname) 6717 Antal, a minor planet See also Andal (disambiguation) Atal (disambiguation)
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 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 0xab785385b533928597671e76fdabc41cde6150fa5d9ef94991db7aeb7dc63c55. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e88c433-39d9-49ed-bf7d-1a9046ef03ff.json and https://artists.proofprofile.net/proofs/artist/6e88c433-39d9-49ed-bf7d-1a9046ef03ff.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 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 0xce612fedda65be146db4aa4d3a0977e8083e89e7a5cfe2dfa796e55a8ea68df3. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/HUA611502519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87343298208107461cd93e29154597178467a8e0424b12d03537c333425576cd. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/HUA611502521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc556d26835113b0d9307553bcb916b6e33318c09ce175b8bedc1f785ddf7f5c4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HUA611502524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30ae0a5535ec0d32579b651e7d069baa1e4aaff5033ce2ce522adc5da6670cb. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/HUA611502525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8439e9a8dff2dc374294c3a3cccf0c7bc832fa73b1bf3dab79377315f812e11. 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/HUA611502530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83b7251cdc8c7cc6a483a32be3cfd954ea003cf53ba320b43ff5fde90f0a28f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/HUA611500960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e084e27255ea729d589c90b55043fafc3439ad46b6cc1742e16f9116299a285. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/HUA611500961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45ac93353bb6699276b41a58447938b4603f383c6a6a9c43b16370e30d51f00. 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/HUA611500962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3efda0f595a95e07b04fb6a56f58d740e90790ef5b1d56b44fdb36747e77fc. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/HUA611500964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152107d9e82fa577b58a9d25d2a2e1b2a3dd22192352da7b920657d5b67ee596. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/HUA611500965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c58dc6e22943110c3321fb4cf7a166bb14ca9cdabac6804e28aa5badf49281d. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/HUA611801698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2bb859589a330aaa7a19ff61895a91d6fe34be5e7c32c2f12d84eb9920fa16. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/HUA611900277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15517627316cd3ac51e1e36cca65d85b8ddfc0f6177d926fb7168e7bdc0144c5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/HUA612022875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53da05da71e6fe0135b868c4ffe91fe7983c13ee58ac540a36802fc7cca43138. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/HUA612300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbaf04022761d9748233206943163c453711be258c63836292db3d85549b99b3. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/HUA612500727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e7afff06615ce1703edcdd1139491971894cda9252dd9ddfc14c40a03ec558. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/HUA612500728.