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 0x9be773ea92d71da153b055dc0b98ccdb0d2119971fb155c752685447ba462426. 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/e4406539-73c1-46eb-8f3e-c1ba0d6215aa.json and https://artists.proofprofile.net/proofs/artist/e4406539-73c1-46eb-8f3e-c1ba0d6215aa.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 0x2753d1210baa6f77c92a15562bff885fb23a08054206e9c012fc87b93588c279. 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/TCACY1759180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b54095e804e4037679ad270a6b756cba38889e7a613bfeadc4dc313a49f633. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCACY1759182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0f522ed121251a60e53a23ecd405169ef0141c13fb272f9fd5f5f6ca031d34. 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/TCACY1759183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2662843fb6947a394520b096f32e108fca5b77895e84fb1bd9a562f80f3fb9b. 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/TCACY1759189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147a3911b4ff59c9341cccf7127781141527e81d9a4cc07d3fb03fd3306ee7d4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCACY1759191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fb2192f163425a4334dd7856887587ab7cd74b052b7ede00c08f87216d0406. 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/TCACY1759197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14602e6ab66da6e1bdfcc87e92593fde52bf4fcb66e7806bf9eb88247fb82b4. 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/TCACY1759199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c4b4e699f7abf644aeb6e596aaa96d99de496c591b0f8a18895d1261b15db5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:21Z), 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/TCADY1817207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e46b8f4f4a83ed352ef36e42d896c88bed98f1e0e5801a638a18ef34fc2f6f4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:36:34Z), 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/TCADY1817208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827fa1f5b9619c62a5644c5eea38a28e04aa2852c7b641d00cc8c8a52d082a5d. 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/TCADY1817209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4001eb2444b27cfd73267ed5affc84950ef28c456d25cc2f84f940b8f82983. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCADY1817210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5732671e1c465e0cacd9648ea54cfd0147f6836170f371515d58ec09b798178. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/TCADY1817212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16200167d1b34bca700af9ecc25024c7dc99c8d0c286d582554a2d6f9c879655. 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/TCADY1817214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578541a1a7e70da0471f47cce80010cfb474f037f80631a14e4657c622ca9b63. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/TCADY1817217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977319733d747b91dac59e83fc22fb3d3b046161beaf32a2ee16c891fb77c7ed. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAEL1988079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa459f1e64e73ec18dcbf78b876e7b5bf84e9f9ae6a214c3242d9183736bf860f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAEL1988082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530bab96f6ca15d02792da2637a81ba777ca846ccccc48c09c108d529c4aeec4. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/TCAEL1988087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c32a5d373c0c758187ea57f10017be0edb78ba5b8b5b0ec916efbf32e6fa34. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:13:09Z), 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/TCAEL1988090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb707ff50946e3d074a9b4d89b5fada9e116de5e7f038895da4e384be4d50a19. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:54:30Z), 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/TCAEL1988091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f0bfbae9dcb1a5726e2c9d4ab4f3499c9e9f1d4dcda3d77851ebf39b0f3860. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/TCAEL1988093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9132bcadd00a267863abd871e863ea0269194c4c466c287d7905012b93d8fcc. 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/TCAEL1988095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2760749b7bf3e8394d62244d283be17088be29f0ab2a5a4c6fd705c8e4e8d0ab. 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/TCAEW2096603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb702f9450fb18cc77489324378832e9c2e91b692079b01d53c1c7887f853a3b5. 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/TCAFO2148484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035696ce90a948b34179c3dbd889c05d401a8d4a458713e1db13ccf1d676db2e. 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/TCAFS2137992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdd3dd1dc3468de93e82753c272330cd2638f6d2cfea16c8def30fbf8b1aa35. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:28:52Z), 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/TCAFR2118406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f91ca50fe5533ac65d497d2a5939b6198b416a448f3ec3016fffcf3ac9436d. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/TCAFS2138009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cb67b5ef6971f54cb23e8109bfec66d8bbd570a1bcadd454b96a19b2525402. 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/TCAFS2138048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025f93018c24948fba5cb4cd56aec4bfa43f5693856b3db4862484d6ff68af4e. 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/TCAFS2138055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed48470cd6a8a31425d9977576c4c0ef8ad081cc6ce9fff6ebb266eabc7c27f. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/TCAFS2138060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adbb629270705e0550e66bc8fbec49b7eaf6e1673b820871dfaa9a0c2513c09. 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/TCAFS2138066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7763521d548b2c6c077ebe7fbf515ec8335648c114050661823d1fc2677123. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFS2138073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6106f734d9234331bbe8f58b018a7b3bf042dc5ec4b59d7201c480055e4dd4. 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/TCAGM2239250.
Sonny Torres and the Multiverse of Sadness
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ffa09b7eefc638a3b3b944dad41696a505beaeeb6c609cf7d752cf23686b7c. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/TCAHS2358496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe980b2303faaa1cb2d6505dff8952aae850d0d88e7762e2f3e761be09c456022. 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/TCAHS2358570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28a6a65adc9d9e18fae045802c34f4d1a4c12cc2e7d66fef86add96f9445517. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAHS2358709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9978d91654b09905d28e03078c40ba00263691204b5c5af4ccf1635c6274b3f2. 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/TCAHO2384943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bba3285247a2e586343a1802dd25ba73d3f0eaca0eccabeea29e31f890474e. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAHM2306118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7a7b0aedd0a113d8f281d69e355b02f25e147a5465de749522ccc4e50f5be9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAHS2358813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a26e6403f7c948c2f4f3f11fc325a81abbab066daf01aa7fc09fba603d515a. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAHS2358841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf812e1ec90db112e3d77f263c13f030bbe67f4c489415d332d4dae6543408140. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/TCAHQ2324445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9508c7c8e79e4fa3eaf2fb6ad2dab9a74e17381543b23d7434e5bb94bbc54e. 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/TCAEX2016937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e571e67789bf1ca95af4841e8f76b9bd4391a7281993126c5e9792b1a016a7. 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/QZ8251812912.