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 0xf55bbc9abf6515cacba7cffcb3b81205377b5c73d19676248fb52d40b58ffbad. 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/f5748538-3a59-4d7e-871f-50f63432749b.json and https://artists.proofprofile.net/proofs/artist/f5748538-3a59-4d7e-871f-50f63432749b.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 0xf879c286becc6f7492168f510081a246d1ff9485cd192db611d99936c4e6e3ba. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBWUL2034227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cbe3b9884df3bb898f9d20fb806fcecfada258754d36a4dcb2dca8ed19fc41. 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/QZNJW2076837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87f3adbbfd0ef478b3d93fc09ea1b7294a80cf8d72ee8f09686e0c41fc1bc31. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBWUL2138941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09252257aca4a11637437a6e32c18ba692e3cbc3b175c999e5fe8b76d3ce0faa. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBWUL2138949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694644baffdb13e47f1307015ae97070d680a734031bfc8438cf3cbea37bf319. 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/GBWUL2138954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb0931821c1a0e572bb92a37f8947f4ec2c5bcd0f4f2265b6f88408322658c8. 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/ARR4B2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7212697cea7cb42f02d98044ea968c29b9e1dcf483fc498725ab50282cd571b. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/USA2P2519476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7164c2263bee1ae73b14f3fc295beb06bd8e2c8714ff4d9790dccff34870f217. 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/QM7282029442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b092950d7ef2b7bdd861d1e2d91f4ff049641526414397a972f737876b41f47. 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/UYB282260036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58e58738eba5f866def49b2ced815477aff6b0cb8702af8fd218dd0567ef2a2. 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/ARR4B2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fead40c227f40ab9558d486b66ec1d61a30e092afd900710e522d13c6dc80e2. 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/ARDV02000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8670a962585d7139ec30b1d39a41a8218ef16387704eb926c297a3c5f08533cc. 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/USCGH2040771.
Las Pegajosas Aventuras de Sticky M.A. II (Pt. 1: La Maldición de Stickson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af112454b54180f09ea103c37e4d64e8aba25fb9b61af6008876af31b87d6d9. 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/QM6N22486274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702440318e8e037dc283f98a480ef4ab9a68594a9a0b67b87fa8c3c6b914140d. 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/QZ5AB2099893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fda622d55aa848a146c00b47185462e339628d41edb649daad13cc755c0c3e4. 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/QM4TX2432028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa344ec2085bdbcb8e6726235092e6f8c42990c533ca83a6047be60e7a9e79e59. 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/QMDA62289434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fe52ad972113b7ec4ce2e5cb45f1c4101f5ecb774f89b52304d08e5a4815f1. 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/USA2P2312713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7164c2263bee1ae73b14f3fc295beb06bd8e2c8714ff4d9790dccff34870f217. 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/QM7282029442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b952b232a1f7e9897ec170a370797574ad45ea16d90bebaf9a139490cad78b. 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/ARBIC2300005.