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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0df64e44830e1d71f34d5ffb2cc705df0153343bac29361685a86bb8dc8f3ea. 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/4eaf9098-f44d-41b5-8da2-3aed2237094d.json and https://artists.proofprofile.net/proofs/artist/4eaf9098-f44d-41b5-8da2-3aed2237094d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd0748af49767717d54f882404a8b20764d98057c245392e522864b30df2376. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USUM72024334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af5915bdcc534b59cd2567907de86a8c2e6220a673833d5f290e1ad40a62989. 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/USUM72024335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac67d924ae6929b72d5423ba7419397947f67a171e1ed162fcb24bd74ec2a12. 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/USUM72024332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1967425414563ce9687e1e850a906e739c42c2984611ebef1201ec8b7ac914e0. 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/USUM72024330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7691c3b176c0e1ccb0521b762b5113e92a9a3550bfcee138f430ca51ef40bab. 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/USUM72024331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59871e75c2d97c37c2f8307d43aafe6ce4f827a469922a065d22a38abc0c28c7. 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/USUM72024333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cbf1095fbf3548722165e4c8a0bdf12a7ebd0e0dc675205a70b80f3677c28a. 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/USUM72024329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3046ca8a6999ec1c84b13f13d35ea55b25ab5f6bb393e5cfcec9a324753ac735. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM71803981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9870b992666c476859f99a6da7a553bfa138e2fbb8b341250a071c0235b41fa7. 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/USUM71803977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0578b5737234e2d9987b1a018312b0486a799aed87c5f14dc5bc8711e157db. 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/USUM71803978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81dabe5533b9b564cb9045b5a48fb1639b268d0c4a60c28e46c379237609c36. 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/USUM71803986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1369083432f4a34ce7590952dd5f57b10f3487735013401bc855dd7ff2f7bd5e. 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/USUM71803983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95c15bc106178dbbc20b06ad90ed6fb41e35470ff7fe356e287d752d522c4fe. 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/USUM71803982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0961ad2d9c7a596ec49fc53396d2a310012228ed044d4ac44cf390de7454e5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USUM71803987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e713fad3c38ae39bebc8fa683914391f95e2270f526e6db7d1f57f947d6c88. 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/USUM71803985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94e2712f6bec3b0e5c73081f52c13d056e56afa0a1cf621426de8a747420a59. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USUM71803980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf34e76961f551a529377083f824cf836faa6c234e644da6d2d320ef5485ee3a. 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/USUM71803984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe054d925f4fb44ceed4b636fa87c590037a8e1c33e3cb7dc2a99934340f67526. 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/USUM71803979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc234600b4ddaa135286b3d85114ad70ab08de2c4641e2445c6d7bdefb10401bc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ATA019500590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3676089f775908cf55c60306d6512462e6b9ba58c01edd88af74f4812f66e980. 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/GBUM71702544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29593abcdfedd9d2d8517c0753c6e47c86982344eee80a803559d0fcaf200fa2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AUUM71500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc556739bc47d417e9e001114f724536c1298151b6c01638531b07aa486df70f9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USVI29100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfc87c8143ec6a89c9df2639085bfaae86064ebeaff794caadb35a433f828ae. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USUM72209199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc1ee2a456a18395faa81ff3b1cb7c5d96d33e2b67ace5ac0814c9a1b5ca74a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKDBV2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f8dd3994e1907c40f298cf11133ee900fcab620f20cda40d8c201e68a9658f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM8RL2001076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb4548e9fcc0eab0f6da5df27238e63ff74e632f3be59e3ccdd121f7a69ad5d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USMC19238047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469dc193fab3a81adfa0da818b846247f7c70a54e5b7023cdad082d44def6cd2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUM72209201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e7f51f2f196fddf854fa960ae0da49567b57193037858304359caed878339f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/AUUM71500302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7024794aa1cab8c23b474bf21ff57d149d0121df8123d0c08edb4247f6100c5e. 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/USMO19582648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338308725dbb58954977dd5bbee7d3a6ca741845768be7dec7d8b7a8523adb17. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUM72209210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83ef9052a3cbc67604e8133f1fd6d3145fb6e55c8dcff8edf536fc249f690e5. 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/USEE10001720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f3d8c325bacbbfdcef7d3d0899974f7b3480c9e6119aee5bebec97d3d41ea9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUM71114879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8934178a26966461bc1b4a4f32c1d51373fee17cee6d079871bbb6745a512784. 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/USWB10100435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22f75d362795e559ce9c6217fde608edd567ede24199bb5615410ad4887dac0. 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/USUM72003259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bca70e876a670feac48d3d2f6b8b919c7bd72517de0e5df9c64c76b57dda274. 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/USUM71906391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987db6cb47fc3aafc2dc479e5f8f5ceb7ff091186a8ce49a0f961bffe800f922. 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/GBUM71702547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a4d199f88de719db2cda814d0058566ddd5dc7ac25aef65c2ec2c964294910. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AUUM71900933.
Sex Machine (Reprise) - Live At The Olympia, Paris / 1971
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3019812688d9f14a77030c7076c9fc74d50285d466d397f9c67103d8d04b427. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUR10200499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6daf40bbb39d4b73e85f30869c0dc6c307ca5fffa79690afb489ac0f638978. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUM72007747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650787ae5780baa7989d5ba38f3f1574558e035c7bc6c51997c848bf3035ad89. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUUM71900932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf526a80aaf439f7b6f33524da6c37ea4cba3b599ed9e354978d5b173be5d6af8. 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/GBUM71906390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59bff325f91d43bc0f8efc991f115cf2b14d2875efbdb00144f24feebcd205d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USBN20300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469e97dbdf8a101df5d5c3608743b115f9583c5fdbafa49f6a9d43b025c80b28. 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/USBN21100478.