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 0x51f0d19e03c25534f96c5cbc59f49ca88b24b5cb4b23c7cfb1067f56f39ce217. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/274dffd6-99d4-4e9a-adba-1a0ff4738061.json and https://artists.proofprofile.net/proofs/artist/274dffd6-99d4-4e9a-adba-1a0ff4738061.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2e321233a567ebb4378716cfad0bca3f70d36f858d0c2b116b11620055e102. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:24Z), 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/USHM21371503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7a0ab7cacb7b5aa5a4a81d4399a9b358cb33b560536dc2d4baebe3a9abeb12. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:14Z), 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/USHM21371504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb8d348e82e3ee8859451eff4685e9242592c663494d1dcf3be3e4f8774e085. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:12:07Z), 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/USHM21371505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b409328e7207172232870b7df3fb4dc473e528295984da30f7882943b89b3be. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USHM21371512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48055936f98277ede606554d93fe57b477f8a3f5eec6baa2d113b325f6e9ba70. 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/USHM21486995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0839bf2b606b5c9488a5073192ed20282e3403cd6b5945620ca7bd660db910. 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/USHM21486997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b9541d196907dd9d8f04ca79dd50839b1f20217ca7953c2188f28b4a10d953. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:02:57Z), 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/USDY41604024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde91ea0bc2029e242affdcf0a93bec55a213284295dfebe6f19b7550d639ba4b. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/USDY41604027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730bdd146e1301dceaf29a35c8f99aaf136ec26643f65dce29396496543309e3. 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/QZFYY1979576.
The Last Picture Show (Lost Outrider Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac65ccc2ec5376287a36b6fa678ba0afb8be946dfcd2b5364f75330727ed562. 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/QZMEM2198004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15ff227f8e87e360095677aba7e01b23ba63363f72aa92956a19d13bcdfbaac. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWT2149007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6696279003883ae66855d058a8e086525f592a376b03920734a350d805a515c7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR2X41532163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3592e6bf5b8aabaad2c680f56a9a19a2c28d6e83216e8f86f2378e7fd39d1e4c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITXDW1600358.
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 0xd691709c3bdcce2cc1f7c85aa8322f858e8e788f7c6ced770491c3ee678d69c2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USHM21371507.