Abis may refer to: Places Abis, Philippines, in Negros Oriental Province ‘Abis, in Ma'rib Governorate, Yemen Abīs al Mustajaddah, in Beheira Governorate, Egypt People Lucio Abis (1926–2014), Ita
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 0x2199ba983e34f4984270dd22c00d3333e4794a16dfc2539dd86592d57b2c0323. 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/4be14761-81b1-4178-b229-88d9635e494f.json and https://artists.proofprofile.net/proofs/artist/4be14761-81b1-4178-b229-88d9635e494f.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 0xca43fef5dedb9176860682f9fdd9a25f657b3ef7d318c9225e19d203cc3677c6. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAGB2240799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0096e3d7ffd31503e0b4e894d0697bd2e04ac5f7f6e60bfaf4e1eff4c28e87d0. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAGB2240811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a41355f3f43c23922c8d065655ee042202faa155e02f1c37eab44e3bcff2af2. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/TCAGB2240819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf751af27d1847a56e3408513b6210deca843d82ea6f9082da3e6fab58964eac1. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/TCAGB2240855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9740fb27888d583f3a8fbdf611c23c54cce77df060a04e9d44cfd9556452c5. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAGB2240881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50a62dc90c9e86ee50543247d83ba61b70147749c086e1363050a4db916e313. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAGB2240886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd29540fb1d4690a0b5d6e93179bcecfcab8feb4f053d934d87e1e46ee99e3a. 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/FR6V80786802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdefa7e62cdc8d4a558cfc1ff858a1b6440c13c04733c3ef944d1cff899804e3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR6V80786803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd3d0736e430c315721fceaa622f78b53ebb5d88692b6591324cc20df1db6bd. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/FR6V80786805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d90904d23e37e7b34bf17f364f701fa6fcefd330c745eade11c2d571478e21. 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/FR6V80786811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9884e2c16c9ebdce36abcbcb0a8e1e6bc6d4d6d0317e50317240df70e021fe59. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR6V80786815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6310458c5b47a7576b786881b14b08e72c777bde70c962e03f1a4bdcfbcc8004. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/FR6V80786816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af62f2ac187bfe7ddf97e692b525d2e5970d7f9ee9dcc708192d51a37d759d4. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FR6V80786818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efa0bc29c7860390a7d0b659c1b8bb33bd382aabe71ebb23da25c543c8e08de. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/FR0Z50010666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152f06b0be3595a2ae61c82e9e9f1de7821ee4bb1530efda7995425c7753fc91. 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/FR0Z50010667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0247cc34e5d7a6fcdedabe6744d5db6ed869bae9b2b03f138b30652afe61ce. 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/FR0Z50010672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e3119e6cf658904b5b5269a097fb521d2dd9885711e471b8c36018b2e6820a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GB2LD2510017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2594468ac47ad6f15345be5d3e42a98663a6aaf023bb79c0e257f5a1d228a3. 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/FR0U91000070.