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 0xdf4026722c6625bf6fbbae74b61965f11f66f733dc1f08b449fb54b92622efc9. 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/babe8f96-0c90-46fa-b3b6-0241e47ff33d.json and https://artists.proofprofile.net/proofs/artist/babe8f96-0c90-46fa-b3b6-0241e47ff33d.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 0xba9a3f33f4bcbc7da1f63d478dbb28c32277fd89bf8fd9467941b4c580563bf8. 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/US38Y2410867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf08d34bdf15b07d82ee6a281d9fa9165042854c8290b9751db50351af13c01. 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/US38Y2418706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2942eb9de4273234e7db20b97ff5a5d594d5a28a87147e9784a1b6b5ed441063. 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/US38Y2418707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4857c49fa9db23f695121d6a962b157a2cca6cd9f2becc29d76f0dbf19810aa. 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/US38Y2418708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8598951876988f34f5c3e5ea757d36b34385f999d201daafaab1fc86f779285f. 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/US38Y2418841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d51b9f8bb9dd3fd3c9b591a8862484830c26153e0844f512eb5924d9efe1a9f. 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/US38Y2416152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf828496e6eb33d966fab9a862398215c891c0a5a87af5557a2fe600034f97cc4. 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/US38Y2418710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a3eba0857c094ae60e41cc9fbda0aecb30df733cb19acea57400cdf4a20242. 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/US38Y2418711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5361b4c1eeccd2d66ac345d21f5b9b46617635268de0237c6222bf4199d1bbb0. 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/US38Y2418712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c716a7cc077cde5a680d12ebe73653bbe9a0060007d7121e09faa7a43f5185e. 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/QZQQE2100383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4911daed3d8aeefa1a10d3c43ed7fb7ee75f06a59e35a53ae621ff0cdfa26529. 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/QZQQE2100384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd744d3ed8e12d6d89c90c5c41b9df062c7e299524ef3751e379020445a1b5487. 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/QZQQE2100385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1303c1a005deac7bb52c55dc2ddd8ca803de7583efb9d5ad64c850653ec300a. 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/QZQQE2100386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef9b00d703912b4bff8606f4956b395da8ce292672efa1949c1e0164c6558d9. 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/QZQQE2100387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c54c8a97e5bc34d3f28d0ab906b7d72190ff0993d5b4a440ecd847c77f2f5dd. 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/QZQQE2100388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b56c89dca4bafebbd73dcde25f1e7616582ab26a2f08c050bc40e111bf93772. 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/QZQQE2100389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc410cf07c08a261c048ca3982950534d3343f08257a14f42a5b3ec58ab99af. 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/GBKPL2088355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b05bcff6cb0da5dbdf4d60b382e6a31c0a5970927b43268fbd8500d3f409e8. 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/QZFP51963937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bdce487eccc84b05b4dd6be2ba037b05e06c2371411f3a3cf2edcf8b7826d4. 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/GBKPL2088356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb3c4eea082179cbd7f499a07ab8c5e4694f4ce7b5b9b386e1153aa44dbc673. 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/GBKPL2088359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3448603fee47b34918863681a9de5d2b8ce4b31c2ddb7fa0ba7a4d308886349a. 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/GBKPL2088358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6948fbc574e698399770374d16408cb5eb4b165fc854fa1410224a123849a59. 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/GBKPL2088357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b05740e7ae6917f444ad00cfac9f5c44689c649b29c1f175f223d3d122bbe5. 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/GBKPL2088360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d0cf76022770778fc3c40190c0aa2265386e4c9b1ed3a37eb3b01e55cb836a. 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/US38Y2506559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d51b9f8bb9dd3fd3c9b591a8862484830c26153e0844f512eb5924d9efe1a9f. 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/US38Y2416152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9a3f33f4bcbc7da1f63d478dbb28c32277fd89bf8fd9467941b4c580563bf8. 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/US38Y2410867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab92fe081191e20e12c7f0d07357274bd0e46ab8c4496ae2ca0014f3ec6cfe09. 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/QZQQE2100446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0572e5ecba979b5866f9f9d42b52dacddf6738b926682a2483f76aca3ff5fcfc. 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/GBWUL2179815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1229d2c04e0bab6d7413f09953f5464a8a315cb9cf7905ccb7f7eb3abbf453e3. 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/GBWUL2179816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ec8ce320ec2dc23c36933582f1ea20e874643abf1d3807f58a8c395680aa77. 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/GBWUL2179819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00d277cf720055e5536661383e517907483f6bd74853de4bccfef7a0b2d1264. 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/GBWUL2179822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ec8ce320ec2dc23c36933582f1ea20e874643abf1d3807f58a8c395680aa77. 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/GBWUL2179819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcb1ee50f2c6c1f8662bbf764e6eea9198b139a1c66cb3c3ae0b610eb9aec03. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBRKQ2133366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf480e429f506f7c65858c705d71faef6a7861635cbb0cd89abe9401d6856b38d. 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/QZ5FN2153167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129f81d8bf28eb6ab50176aee346fc64a0c4d08823808beae54b303b555f4e94. 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/GBKPL2034500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2ffc12eb048045b0480811f1e28425270f7856c4a45890e935458c77950076. 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/GBRKQ2133417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d579871802a8107e286748c42fc9a7aeadea53e071e82031bbdf4b75312bc1e. 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/GBRKQ2133422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf480e429f506f7c65858c705d71faef6a7861635cbb0cd89abe9401d6856b38d. 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/QZ5FN2153167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129f81d8bf28eb6ab50176aee346fc64a0c4d08823808beae54b303b555f4e94. 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/GBKPL2034500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f76f6daa4a5bd53338aa80fdcf03a92ae9f6de441c085ebc1165ca647283fa3. 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/GBKPL1979766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b600bff3e7800e511d43dfbf4ea74410fdbe731c5537ac46611639f7c73f2ee. 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/GBKPL1979768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac9372b679493db5b8d5537939962103b27b082a53d879bf6f22f88c6d6ae4e. 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/GBKPL1979767.