Kurban is a term for animal sacrifice in: Islam, see qurbani Judaism, see korban the Balkans, see kourbania It may also refer to: Given name Kurban Günebakan (born 1978), Turkish boxer Kurban Kurb
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 0xcae7bebef9ff74c0cf3de3e1536de6e5364399d138d43f1fde24b23900290424. 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/d3c78648-0779-49ea-9049-1a235d6d40c6.json and https://artists.proofprofile.net/proofs/artist/d3c78648-0779-49ea-9049-1a235d6d40c6.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 0x22d48ee33ed3349abccf8bbdce07ffea8a9d4bde2d7a839ca3e55213a0fe5d48. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/TR4972100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6692d9c3ccf5e71de3c2d7c390c8d09e544aa8bcfbdddad73b66454a92ec80. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TR4972100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5f84a7bbe713c7e92513cea9c4399fd103ffb789b72d92ba5d9f7da8629f4a. 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/TR4972100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cd1fdd8eaaf60f3091a86d6b9a271a1e0a5eaed8411b6b5a6edaa04e3d2982. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TR4972100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496da00d32dbf0387a00a82dd4aec09f7c9556bbbce7d8668eacb6596c10f7be. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/TR4972100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb671e812c498708b32b9b60accaf1e367ab0a9b788a31ff08042204eb19b4b. 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/TR0910600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c67c6c7916a7cbb182f895b89a5bc567323b129f2779116cf3e7e3c7dab19c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TR0910600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9add586468db2b3f1115e67d0f4858eb5300347acd368638408b3d301b9841. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/TR0910600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf5c5368525bd91af6fdfae136fb3f164e664e5c99770ad4ebda306f91cd284. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TR0440600901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb17df87b348a909b682f86041b37e383c4301ed6e00e8e7beb7a6ea07f96562. 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/TR8541000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f63f8d31dc77b5fa3dcd110b51c466021b7080a17050b285c265209b423621. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/TR8541000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8e1c81309e6885e30f9a852aa2b72e01a6cd6282fc51a257f6cc1fca1b0b18. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TR8541000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66cdb0324c7b28b12bd4fdc7db34993aa39d0dee39b3f29804305f1723da42a. 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/TR0910600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dcaf6d261f507ec8e4d4ed1f7f6bf093c8c29b7121d9a09e3e8ce6effb7000. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TR0910600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf35b76cc80e42b053641e7af192d1ccbcafa484ae4733b3adfebfde14e099c5. 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/TR0440600914.