Black Violin is an American hip hop duo from Fort Lauderdale, Florida comprising two classically trained string instrumentalists, Kevin Sylvester and Wilner Baptiste, who go by the stage names Kev Mar
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 0x13014f742f766e680fa6a5fd6bf81da9648feabd0aa2230b9585135b3c3dccea. 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/22f9e54a-d471-4bea-9282-c250870f5799.json and https://artists.proofprofile.net/proofs/artist/22f9e54a-d471-4bea-9282-c250870f5799.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 0xaf4ddc9b42a061bc6febd788f701d2aee094c3961b1fa9a70abe69e8f9ded3bf. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/USK290700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a42a4bddbe41301824227009e10a4137d746e32e05d1a997b8e8db33ed846d0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USK290700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddf4d8ee3cb18ea4efe563db82b547eba4908b75222afe32671e8deb2443225. 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/USK290700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968c3fda6f34c8721804cfa0bc02f84078868527918464c237d5127851d8ab70. 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/USK290700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72132c26cc18c5425c9e7ab74207c8dc0c7fcd0127e3cf229d105c339e2cc843. 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/USK291200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b337da12439f6bdac5c6bd921ed84ecf93a381205b8bc607c9ee85fe64993de. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/USK291200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e7ecec5dbefab0436a669f97ff1ea29433238477089b0d29c6a972e0565e6e. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/USK291200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3f5aaf23777081f06c3063d708d83f5403fdac70c34abd82ea4978302f0d26. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMWWJ1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521829f73cd8df47a3c485bb8d155542c68656c9a39270a6f0402d557bad89e5. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USK291200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c98307b52052c644267218f03e60d7b6eeddd4e83ec97bf73eccc6d8d3f34e. 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/USUM71509219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50282b1673fbac6d38ea990bd33d3f6242e21321f96f661323ad4ef87220dba2. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USUM71509216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed43756438103d63a1534b13a62120001a9d9650569085be7aebeef4e88fc290. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/USUM71509217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f68aa4c987aa4880d9ff8148e959678ace20e08505bd5b16c08b7c258b14d6a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USUM71509218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7c31c41af5b4025e0a956aeff8c9bfc5e406d3d291683f21b08205933c4b9e. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/USUM71509220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d62f73a95a3cd956d57b68b829666b70f7ddee7c3901284929f59f647fcc3bd. 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/USUM71509221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210c481f4f777866f0ba91d507f0e0ffaea19581444218711690299e86291a8b. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USUM71509222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ad56594b9dfcdc237d4059473ca1fa610a19f8fa41c1330cf212bee5b9c3e5. 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/USUM71509225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b3b18ba7442c44b7bc04c3057ddcd924f4227e1efe83e8bcf07a6d869107bd. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QM6P41966992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1477efa44d21c259fdffb1dc0650472d558cfff796fa3880cc75df9e783121. 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/QM6P41967720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe346dbe6b0f2d6d511642cb5d17cdf70e87e5e27acc34a7fd9a7d6d416de38db. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM6P41967719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1477efa44d21c259fdffb1dc0650472d558cfff796fa3880cc75df9e783121. 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/QM6P41967720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d285010b6fe43cbe0a276056bcdd2796c85ac3ec682183e5bf91d2d1aa975e9. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QM6P41967722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7bdc69679eed58ad52e8536190be6d2f8309a336a1a2f638d62d18971ee838. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QM6P41967723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9694f22293651f55ad03525fdb18d57f73a0ba208ad83a5d7083547f9b22a7. 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/QM6P41967725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28124732b85ca35157911fbaa9327fb232334f209bc358d086dab2dfb0320916. 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/QM6P41967727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270726310e2874e17936a87286a1f2c8dc98df1b5cd02147297afbf92f8479df. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QM6P41967728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3c854677e81caefd4e4cb0559f8650fbbe70a35fbab3bda34181288c358bcb. 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/QM6P41967730.
Black Violin (Live in Los Angeles, CA 2020)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b413f12e8efc7b61e5881f48fe2a9cbcf565b744c042a4e5a6a09b73b51beb. 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/QM7282043303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f06ac50e97301c3ad749f80c8a161228f9f15a1feb385419667ff1926b05c9c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QM4TW2199479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcb775831237fcaaa7d1dbe3f8a4d0b5936549b9a0cac0898e2a46abcc6a0de. 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/QMHFC2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7a6b185a67b5b337fe05f13b8386e686bffcf1edb0645fe76c2753e6e02e4f. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QMDA62468147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69ab958db45e23e317a4a9e03f237f0e76391000eb88296ed0bf1ff852b451e. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QM6N22566466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7a6b185a67b5b337fe05f13b8386e686bffcf1edb0645fe76c2753e6e02e4f. 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/QMDA62468147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65259579b7422ce51d951cc64f92c05b62cdde9c469037770bf8f8e3f278da2. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QM6N22566467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407b3d9efbdad58420bced70689943a4f09e9d05d3583344c5401053f993bb5f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM6N22566468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf01c7377b67487b45025e32d996f15fba3bdea1275d8ef971a72e34766c475. 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/QM6N22566469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82415e537f1522286a00890d4a63995e5217818826ed15bdbe45ca6d3651ffc. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QM4TW2569637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cab53753281687723361584c0f9d54baf5ebd56869dc4a091a09007da4c6769. 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/QM6N22566473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24db0ce79e888575fbc57e48339d5f9f127030408bbc6e2ecedaafb0947c6076. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QM6N22566481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab9f1d72aa7e10efc7860ed7ec016af02e611f185275eae633394c742cd80d6. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QM6N22566480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf97f7826f5485669d9a9dbb7c06422cb884b4e577fa65f3b37fce61c41104f9. 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/USA5W2000229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d858d5c0f0402edeb3304fefe15f21892b6c0260131771460b0ac5c8d4d9fd8. 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/USSD10504280.