Costi may refer to: a Romanian village, part of Vânători, Galați commune People Cozi Costi, British musician Giandomenico Costi (born 1969), Italian football player Konstantinos "Costis" Stephanopo
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 0x2151de52e24c3639fc1b04b6a3af1509db0d5b36d022515c6be10ff9160d7958. 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/af90471a-325e-4db5-a9e5-3f878e4cd530.json and https://artists.proofprofile.net/proofs/artist/af90471a-325e-4db5-a9e5-3f878e4cd530.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 0xb33fb849ce37c663bcc0f06e4951ae93bb3e21cab5c88ade76da9debc35c9802. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ROCMA0600221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d7d033014e10f81877b890e4e03fc64fab5cf379fc70f78c2e615eb6e48b61. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA371034546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4310326ea142c3375ba9a4720b52ae0c35f4fd75d30908624bc087ee192560. 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/USA371034553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50cbf52aa859c535cf0f3f89c428f12e9db6f8179875e97b5b98278c4f644d2. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ROCMA1711061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef708310f3950dad54c478834194abea97c44f4664d21a968991664b32e1ac9. 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/ROCMA2012388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f918079d7a67c8cc12264f289b8759ab74e095a9c6b7963cb2d89054e65c683. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/ROCMA2112669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98766c3a8e615c7f8ca2c600abc5fa0e662796c4218b087494addc35863002d4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ROCMA2112809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eab102d26278e933490d26c1f73d89f83413a6efa864edad5e7afdfefa40280. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ROCMA2212930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324ed2a7e18ab6e9bd53638b7c34f03283aec8e06be88d1328f875e766af86d5. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/DGA052397698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5b2100b4a6e6722ca7342b8513ca3e357cc5d904bb67c344d8b4ff2b5b321c. 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/ROCMA2313138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7da43baee5506e2f831a6c4f5d0fde428b961ee2d8b4ec5d25ab5b45a651631. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ROCMA2413252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1822c2674b0711776910ffc05efba279a32e961c30ea167d840ef4c06dbebdbc. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ROCMA2413255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89da22bbf9b089ae6043733a2d57f50b90c3e055f33f4c28d2c91a8a9afe7ea9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ROCMA2413256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236d449a18330dc677b87163fe57bc3088739eb39a5a4892a7438026cdd5524a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/ROCMA2413263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a545cf37898e5cf927284e0c3c629c3a9fbeca75b5a28d7e3fbef803504f136. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ROCMA2413293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1b18200f0e6c98107986e93205eceb66a0d77c8449c13ac1cc07d75256ce78. 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/ROCMA2513595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3980d9046306e3e236e998f9899dc10aa47d36d62035c0a958a641d48cb95f19. 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/ROCMA2513709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7131fa2a1c3776f24ceccc44a667e98a30317fec64400c1d5eb5aca7de639399. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ROCMA2513710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e28c953cb4ec8d26d34c5313adbc7c802275816043b32bb5fcca1aafc58b03. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/ROCMA2513719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0819f33d51b23ecc0defaa82c2accc7edea567d646cb3bcd2c7d4cf3c030af. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ROCMA2513764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6346f4e01c19c38329caf36d9b03e97f81b674e253a641225b9d302865201cb. 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/ROCMA2112579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b145dc0fd2f77e7da30a1fcbe4eed8e4c1bfd8034380012771692f1b16c1723. 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/FR2X41890728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461b6e972e641da56ddb1349419d763adc5a7c88efd6b23bc5748cde26639b3c. 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/ROROT1824301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd2adedd41b66adf1f4ef5ac5c66695085d7279ec535aa0ccce85642cce8119. 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/FR96X2429890.