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 0x2ed730f4628d217a2dbc03e648d8f2438ab8fd83849eaafc5ab68cfb7d53eb88. 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/d7c9b18a-2fbd-467e-a99b-b064da36f66b.json and https://artists.proofprofile.net/proofs/artist/d7c9b18a-2fbd-467e-a99b-b064da36f66b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Classical Halloween Collection: Classical Music of Doom, Dread and All Things Wicked!
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 0xe7a83c3d4d06d62de8dcb56337f1ca81321ccc2aae028d25a3ea42107c64280f. 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/USSJ10805199.
In Paradisum - Liturgia dei Defunti e dei Santi: Dies Irae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0e5d2292ede449b5eed5c604971b093faca92b4ec7511cc552ce2f5ad707f7. 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/USSJ10803668.
In Paradisum - Liturgia dei Defunti e dei Santi: Agnus Dei XVIII
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf064c8cc2ecbdc9a43b2d0bf85281fca8982489e64fb108f573f75562fe2b0c. 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/USSJ10803670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc053c04ff5f54542c99278f2ab2486c325aa269f481dba6675f8a813bb9f07cc. 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/USSJ10803692.
Lumen ad revelationen: Antiphona (Maria Reinigung) Antiphona
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd59c712a2ca70c912c22918d4b38dc8dd07ddaa1f1356cc01bdadbd21496dd. 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/USSJ10803705.
Libera me: Responsorium (Trauerliturgie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cd6abd8f32bac2d4d119ad2a1bb074408d1c034e9ebb8df6d801c71298c743. 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/USSJ10803707.
Proprium Missae in Dominica: Introitus - Respice in Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac72bf39684888a094970572631efad7e5a1e705a2f733d5076099327c757c0. 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/AUXN22331682.
Proprium Missae in Dominica: Graduale - Jacta Cogitatum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adc2f4436448121d110e29633a7968739aee4c10ee8daa31cde57fbcd4ff1ff. 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/AUXN22331683.
Proprium Missae in Dominica: Halleluia - Aleluja Diligam Te
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5e3ca92695d81e05f57291d3f1670069994942049a18e389624956297e7ff8. 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/AUXN22331684.
Proprium Missae in Dominica: Offertorium - Comunio Ego Clamavi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08021e0a1d560f0f78a3799ee6f14a55e1f2688660f69e15a195e2412dbd1b4e. 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/AUXN22331685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff7dc351a340cc10d3d0fdbd41f8d4910c4ee306aab63d42c2bf45b56ba00a7. 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/AUXN22331686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12044f0fd83eedaa41ee01a80f99aaa848ca1d8d74b31328d3c33803e1fe4b34. 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/AUXN22331687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677d95cb48e5106a0a61af18f83278041649a87128360943ccf46f2e57712482. 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/AUXN22331688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7768830ee9ef08f4835c310c20c3d43282400388cbff094666b2ec132b0075. 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/AUXN22331689.
In Nativitate Domini, Ad Matutinum, in Primo Nocturno: Antiphona - Dominus Dixit Ad Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae6a28854693e7e2d01cab95c7469ad7582c5c225854c4d55618bc3ba089a72. 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/AUXN22331690.
In Nativitate Domini, Ad Matutinum, in Primo Nocturno: Antiphona - Tamquam Sponsus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e135efc4b5326337479483ff286ca927a889875872a72c8f308524afc98e79. 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/AUXN22331691.
In Nativitate Domini, Ad Matutinum, in Primo Nocturno: Antiphona - Diffusa Est Gratia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d8464ba36a08035f81a67913959f2e9ff2e5b7c5a1f1cee1125e469f8b1d55. 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/AUXN22331692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc042d447a88c909fff16b7a8703c6b1a9be2ae819a6e9f87c836db78a0c7b72. 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/AUXN22331693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551d8e845aa3bcb1c2db66a7c7f375c777db1518997b3a0a57c661397db830b5. 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/AUXN22331694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b21cd9e08bd021e740039076646f1f981408a6fbefcb67da9a26be034f7876. 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/AUXN22331695.
Prosa Trop - Fac, Deus, Munda Corpora Nostra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8644dcf0528c3814c5cecb6ae6d439190eb75ff69dad86dfd8eeda6b700650c1. 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/AUXN22331696.
Missa De Angelis - E Canti Dell' Anno Liturgico: Gloria VIII
Collana Diretta da Bonifacio G. Baroffio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373779ca3aa182b43411149413b27279cc98536b8daadad30f4818d604edc2e8. 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/SEWDL0576902.
Missa De Angelis - E Canti Dell' Anno Liturgico: Credo III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8839df899d2df00cab19acf41edfd9dd273d2a4135c17986102da97ca1521c6. 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/SEWDL0576903.
Missa De Angelis - E Canti Dell' Anno Liturgico: Adoro Te Devoto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cb38b2cdc051e80859814cd76203b10f6933a896cede8fc77f1348f8541c9e. 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/SEWDL0576909.
Missa De Angelis - E Canti Dell' Anno Liturgico: Te Deum Laudamus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2752beb9919742c8e0d706366075da7f961c8d4741f45ff1f831ae8967423a0. 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/SEWDL0576910.
Missa De Angelis - E Canti Dell' Anno Liturgico: Christus Vincit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecfa8330530539023ae95228ae48116ff3d9cc70b5d6a911d9866ca068454df. 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/SEWDL0576911.
Missa De Angelis - E Canti Dell' Anno Liturgico: Ecce Mandi Gaudium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ab2e9e4c7f054e1eac49b7c200dc9fd639c1913c3aaabb269e3111bcf600d3. 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/SEWDL0576913.
Missa De Angelis - E Canti Dell' Anno Liturgico: Attende Domine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54269d65df4386dc26b7291d236324c9521cebf6da488a5113a35954f0dfae18. 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/SEWDL0576915.
Missa De Angelis - E Canti Dell' Anno Liturgico: Parce Domine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2fee9a7c3bfcf6edf0cfba990db644ba8f55af1f76683f6198eb4686082537. 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/SEWDL0576916.
Missa De Angelis - E Canti Dell' Anno Liturgico: Salve Dies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adf454fbac04edac89c652331f8ba82a3c771b28863882ae9fbb435fe83e84d. 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/SEWDL0576919.
Missa De Angelis - E Canti Dell'anno Liturgico: Ego Sum Alpha Et O
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704ee6908ba6b5df8f9297078c8bb28aa7b1106d82c9500dd41357962346f28b. 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/SEWDL0576920.
Antiphona: Dominus Dixit Ad Me - Psalm Quare
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7f5e18f238e16bd17a7e2cf799896425e9ac34c96e38827af8c36c1823720a. 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/SEWDL0782809.
Antiphona: Tamquam Sponsus - Psalm Caeli Enarrant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824262d57720939567e814501f78438d045ee3fae2ca2fa6362b55368b31ff88. 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/SEWDL0782810.
Antiphona: Diffusa Est Gratia - Psalm Eructavit Cor Meum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef744e7938086bf05f571525be2cc5b08d5203542fa73d61899aded6f56233f4. 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/SEWDL0782811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cd33ddf64866d10f0c069f00652289d860ee32fa05bc81e5c98e4af3f3706e. 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/SEWDL0782812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75853c438175f148d82aa1b10e5f7a0004a20cba2062c4e3de6bf7c060f56e42. 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/SEWDL0782813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8e11e02312d7a9481f159aea45e8e4bd074173a2ee31c4d3ec93b7ac75a0fa. 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/SEWDL0782814.
Passio Domini Nostri - Settimana Santa: Kyrie Qui Passurus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22484fad536e5a3bb1f0bdd43333fb96deb20a7ef0d1116bb888d5679be4758. 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/SEWDL0754819.