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 0xe0a9e128e99648dcc5bbb5002f96b2049a63d11d6bd833652ae5b948d5b47ff5. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4acae1dd-b3ff-4dd2-9057-1ac8a99934cd.json and https://artists.proofprofile.net/proofs/artist/4acae1dd-b3ff-4dd2-9057-1ac8a99934cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Arcaea Sound Collection: Memories of Light
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 0x9e87ea2e84213808c1a30f56d54e0025197a40086d96349d874b8635a806db1e. 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/TCAER2055523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aad066c76f8be06f257a4b4f2a3c4fa52db39eca23a9720d357bb9268fdd316. 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/TCAER2055527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2eae46223924449f37d36fb3162f219e9453b042ddbb4ad77011180f72fdb40. 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/TCAER2055528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd30fd082647c747e1cfa345285a2391ea27ba612643b366027b2b04cb9b71b7. 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/TCAER2055531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408804e8567b303e8a0d7380f495d19dd81a6374f6b26056064eb4fd1bb6ccfe. 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/TCAER2055533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69e3c0d139dde292b149c5fb4fa97d4187ee80fb1d1d130ec40628afc484912. 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/TCAER2055535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbf7cf2634840f76a374f4937f48b5d94e495bf5f04990ea558b4fc990b7eaf. 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/TCAER2055537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c8cb9ccac9657fbafa363b44ad9529bde6d27fbb62872aa0ccfae0c945636b. 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/TCAER2055538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274cf3ef128746710ed34867eecf29ddbf2f67b7fa96ed197bb21baf5a243b68. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAER2055542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030acdbcf7c0dfaa2775f0712103fb25e2dce8643552930af853544cb6944e92. 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/TCAER2055545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b934651ed8e5c7620a2a2d5d23315cf7d518e914611d3aea8febb7b9969161. 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/TCAER2055547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c101674a390a6232e87d09c96ec95cc3d51c0b488caf6d3f88b9b33050d68c. 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/TCAER2055550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db956cb3551f39806392f8dab1e9743cd2a78bb8be392d1be7401ed8dc26080. 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/TCAER2055552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c53375195091e90b3706290bb8ce6baf21cc6fbf83d5e245a7c3d165e5e0473. 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/TCAER2055554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfae77975808f827a9fd66f2d36f9f8771f0b733044511fc729360fdba3dce4. 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/TCAER2055556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3918428ed8d418c83c190cc23be87a3aa0cfeeb1b817f43dab82cdb9165b70b5. 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/TCAER2055557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fbd0a2e0eb7b0789b7c6830a661d102d929514a130716154d4826bc8f1f245. 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/TCAER2055558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd35c6197e11ac5d572958b2399c1da1815356289c71434f48f9cda61ec55600. 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/TCAER2055559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1088f4d9040cf3f2d202ede9d84ee1b8d3c208e9473d9ef65c086ed6598f7b5f. 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/TCAER2055560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47eb872701eab5b2160f254c34a42fb8f0e2857a67c78d136b07324c6502f25b. 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/TCAER2055561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126f0cca6c08795e727989a7eb2ef97a7c8b74322538ff4683fdf06b0c497490. 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/TCAER2055562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd8eb6536c71d99c2470d0fcac91d54f0717fd74b9bdb1dfea8b70932d6f3b9. 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/TCAER2055565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8dbd7eaa21915279d55abc0a6951b655a6b865b147340660c4ccbf004c3982f. 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/TCAER2055567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1936d034980417b381ba2c32f18933d6dc870874142ab034775fb552251b53. 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/TCAER2055569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bab8b42ffc349a4c8c1666edc8b2fc1027ad3d1772b475cf6cac4468b550c87. 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/TCAER2055570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c4d7be4cc209134d59405216440f06ee994d0bccef21db836746e1c78e6c51. 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/GBLFP1521035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc0406696c18e8cbb165d1dfb1ba0432e03315a247fb036b44e0d6d10dcffa1. 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/GBLFP1521038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21033cb487ef0310d4004b32f85878e59ceec053d4ed09bc7e4150e5843763a. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBLFP1521041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa8527927c20577d4c4430830f63bed02a5c7167c2ae394a85ceeddf5d69d96. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBLFP1521037.
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 0x4e8bccb4d86cfebfd82c36545e00f89aa9d779fdafb7111acdcdc0402259fc67. 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/GBKQU2006129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0eba466f4365423bef499baf272354a6184af3c8ae00cfa6177ac24e8446bf. 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/GBKQU2006132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c9a24e156b18af8fe4b5b96e2cd14d1cf9b94509039f0eb47212b37bb72b02. 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/GBKQU2006134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02a844fbf55b60e1983e328b0dcc9d234278a150ff8073a9143e6e54ff56e69. 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/GBKQU2006135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cc2677a35c48e6370f7f74b2ca10d5b8ede242d3de2ee9bdca690850a97433. 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/JPP561100768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa732d875a77189c7161f349e0d1ff48376185e1f575565e7b624943e89ae714e. 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/JPP561100769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5d74ea213d0437263bd58c23f5d440154735eafec9b39dc11c6db459208032. 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/JPP561100772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6036ca3d3d36a23dc77168a1bc702361940a2e6f51cb1f4a89b69787fb72bf. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/JPP561100773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049af4390af28483e15d7118aeb316998a7906104f00320ee91b485060cd434d. 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/JPP561100774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb98bc22eaff854260f4e6b0ab41b502aad3100ed89321f09022f9032ed826f5. 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/JPP561100775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eee16480b3b1406fac59884e2f71bdb4f75eae3df88754d43a0b2f84e9afc3e. 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/JPP561100938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80dd137c2d0c98698ecec0f55ebfff76d29b843f5aa839425250bea490c2c4b. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/JPP561100937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3500275a68bde1ac86fc19b2d3676602a46d668c09933b84e9b9189b5807ff3d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBKQU1904777.