Kushim may refer to: Cushi, a Hebrew term generally used to refer to a dark-skinned person usually of African descent Kushim (Uruk period), a Sumerian beer manufacturer, and the possible earliest k
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 0x986642122031c6f3aa62d17801ebc1065c805922c77358cbb39a98fc00391fab. 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/b0ee475d-0bf1-4864-9d19-d10075cbfcc5.json and https://artists.proofprofile.net/proofs/artist/b0ee475d-0bf1-4864-9d19-d10075cbfcc5.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 0xa6b9ef0586c14f1277c9ba1a71b81695a83f6f24e301f353a4e07b2d0798a7c3. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZNWU2195512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e9a48cfbee96435098cef0eebb0b4859cece676092f43b6a5a3223cf33e0a4. 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/QZNWU2225177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a0f9745ef847e7095b3ff80b44bc08bf68ec40a1e4b2bb089b7a54302ae6f2. 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/QZTB42217594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fc400b2f683e531709b098e5e1c6c3d65fdc3de7cfbb340dff9445d4ebb57b. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZDA72321889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f5f47d247ac85a0f3e68717c39eb7919e3a4ea9adae567e9de2173dfff31e4. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QZTAX2335277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a41443c0b7cf5decf774763c3b9f44eb7559720fffc6923ccfd5eb06d88178e. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZTBC2355350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b43dfde303792a4a189b3f9868c36f2ec6e1d777f037dc7a343b8775074890e. 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/QZFZ42459373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d01bfc0f0d238c3450438818fc6f334e50755a0a4262cf5b7d80480f8068cb. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZMEP2453485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ae8b179402b45f641e94ff381b6f87ee43a27b7fe83a3ddf17c4efabfb46ac. 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/QZNWS2474020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ac162f77c6fdd6eab7e26be26a4803608a5a5a6e700082dca4b6335d4f28f7. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/QZTB72432514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d14468a617f404489f79888b19291eee08c7108d70f1af47fdce1486ac1caeb. 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/QZTBA2424007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc249cd888bc51e0e24dad40bccb76fb82568f3a05e5f27e1e8ae79fbb7251f7b. 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/QZWFT2498557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1d9c99f80220972733bdcffe5f20241c64ce032a16901daf4793b56451cb78. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZZ762459674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1178b8f2c79f635a9248e7816ca183c4e6d13513c18d798354cc405cd103ac. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZZ762459675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0d4f1eb7c1b1592764dbde6f3fdc7ac579b5f42405f2a88fe78673312e9d05. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT3F22463900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce9690a5d2b8983587e842ca96c1f630889728f8fd4d6c9b08b32eb2fa23f46. 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/QT3F22463902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b68024a8d3d01768ede22f7e648d3ce0df419d7c82c7cddc27d6ad12d91d7b3. 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/QT3F22463903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdb85d80d61290a4e5defd04f5e5034e1876ee7bbc75a1e46626f852a2be1cd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QT3F22463905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9283b029badbc5a652c78777b62b490265207c3854f807baf56cbdd84f3c52e1. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/QT3F22463906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd2169402cfcc08f011544bd5075a9b29dfd97b0d2c56d7da7d0e90f0f20971. 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/QT3EY2431368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e81c36aae709e78cc75e2b5b0f32f13328facb0694553c3fd4abd1220b91d3b. 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/QZDA62550271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010d7f10cba97f7cb27fd51b769168a6201b423929cde87bdbe4f4379d8bd8f7. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZDA42593591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a1e3c7fec9f34bb6d24e7de2af41e46c301bd9f76eba9905e1ddbb5eb6a834. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZK6F2593864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213f728e340ece052f86ad9b5223052695a4b4975b42c616932da4c60c38d836. 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/QZMEQ2521585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5638a4d4b6b969bfb5021eea63ee01f7da8587d88568290043bc96afacdfc9. 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/QZMER2589455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057b0f770c0e5fec105258f424c3de85154b0244155477e1776c9817a6b2daff. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/UKW3Z2400875.