Chan may refer to: Places Chan (commune), Cambodia Chan Lake, by Chan Lake Territorial Park in Northwest Territories, Canada People Chan Caldwell (1920–2000), Canadian football coach Chan Gailey (bo
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 0x799f118f3f6acfe69c745313d0c91e821c215673f636a8c82783969dfdfc57a5. 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/e42d6417-6e79-452a-a2f5-dc616971bd12.json and https://artists.proofprofile.net/proofs/artist/e42d6417-6e79-452a-a2f5-dc616971bd12.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 0xd66033e6a69ee61f4a5684a23a33aeaacf503f77461f3b4e71b887ad9fdacf9f. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/KRA252000240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a35df3a902bf0837dbb22cbd0f589cc7c49ca5395e473f954e68eb88279243b. 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/KRA252002256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33962efba288e120d5312a5b8438a891ec93fc697e2be791e06e919ce1dac6b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/KRA252100418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdfdc90efe8e7d917241c26e320c2ba0d4ed094a0da9a5a0143ea406521b62a. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/KRA252100976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc0fc429063e5579000de59bab3c6d66d20fd85640896bc9d49ce34c199bc21. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/KRA252100979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07bb38de3b9f7057d7b64d4fc25d903247302d5eccd2323d40819a2eb9b8bfc. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/KRA252101951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c62fb49c3189c5b6559c4f4cc7cee5da5455dccbff73f644d2e886ef46a72f. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/KRA252200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1839fd6d25f775710014e5a2b051238aa56e89dc80bb74bad2b93bdd265010. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/KRA252200509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35232fd9c46a47aa4e58f97dd6ce95eb85e1d333a42ca99e83d8274b8e0dc9b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/KSA002202286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9dea04d88653e3d88e506af39d98527fe622c2a6dc16edd8150fe263398bc0. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/KSA002202291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59443c7de918df7e6c658b9a110be31a18dca438f26eb9bb3bb5d1492f1f40ba. 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/KSA002301031.
Heartbeat (Original Television Soundtrack), Pt.4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f77b0189e0d9c610771db31c229ae1503bc53ba93ab5956ad5ddb4d91cc2b63. 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/KSA002303338.
Begins youth (Original Xclusive Soundtrack), Pt. 1
Take A Deep Breath (feat. chan, Hash Swan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bf7fa812ac0fccae87a44141a012fecaadb16e76db747ff0d8d36717737a73. 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/KSA002300470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1bc71ca8c9da67bf1f59b17168b49a09bde77d5aced3d8552aeb320df2e1ec. 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/KRMIM2223487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599d7db30557e20b79e7a05585620f904e30c68740a33360681aa61278a29835. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KSA002300517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87abcd390c8421306f0d4f9446a7e38f54d408590e708843a9160998265d3b5d. 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/KSA002400975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb908dbb43e5cc1f1a0f0cbcdb1d579a53ee82841699bf86ba1bd5dc29bddc51. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/KSA002301258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b31a8034a7c9940364eb31cea24176573eea1b719a9c11e987e5980f58bdba. 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/KSA002201589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27a76a342a53cbfca91d1ecc1f7926030f963a613d01e5be9f9c6bc5f906309. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KSA002302356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccd385b26e563495caec5bee62045d66e2b2ea42d2e3d3c9dfc2aa81b4aca68. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KSA002301586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96f8b0688dcab3dafd470f69cdfd65fd0b784d28b357516154d4f1f9062fbd1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KSA002300880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6135954f7fd363fefba217efe97272d9cf991dcd6e9d79318c0816db608afca. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KSA002300269.
Chance (Feat. Peakboy) - Sped Up version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc100ea259fa3a44608f95555f74a57ecb314639bc7d5a18d15759e5f1493ef45. 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/KSA002300270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58e22fa2100f0df7ef46ca89eb84c879055310cf608de9731121584707f2930. 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/KSA002201978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd0c79cb544e1669f47e2eb4ac1346930dbb6f37c18fa7a57e74958b5ac7fdc. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/KSA002200666.