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 0xbdecb3a94d602e0ec884d643e25b3b01d3a553ff0f763939010ed3658ebcf624. 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/567dec23-0dc1-4e43-b276-433aa7ea4694.json and https://artists.proofprofile.net/proofs/artist/567dec23-0dc1-4e43-b276-433aa7ea4694.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 0xdc43aaff56ad6d9693c469472dc201f1780eff88a8d8a695fbcedff581ad3f4b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZES62475865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc5eb150aae7e53862726e06a67f285f08a77b670b5702159e650885c1527c2. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZES62475866.
Hobgoblin: House Of Horrors (Original Motion Picture Soundtrack)
LOT___ (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd49f5d3f72ef707404033267e4db7fd1b7a46e3c3c71b8fe9e11661622172a6. 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/QZFZ32385476.
L I I: Selections from The 'L I I' Project
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536c3f64022d7056500a845d8ab894e01c27afe0c412621e4bfc32f6e164a802. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/QZTAS2108406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ae6f86cc78258b2c8eb3e11c3fab56009d6706e6a0d935e1dc474f7a772af4. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZHN82226019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adb97438d78469ee872ef3b5063a519c0f9868a55289d0169db2ea8d7de4898. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWY2247763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863b28cc6a67b52fac004dd26cec745f46561d3438cadc531186e7d61f383785. 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/QZNWZ2210380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d34c5f795420ad4b501f6f2c6af840d69d73d4caa88c13b4cfae6bc9af45334. 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/QZTB62289569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403e97fa85e005bdef97adae547f3894e21675145e992a147faca0bdf2e35e3b. 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/QZRP52115090.
Like There's No Tomorrow (Original Theatre Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b9e89a94a71eddf7c092251a9beb7e642778e8abec7839efc2ec0cade46f51. 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/QZDA52178957.
Of All The Noise in My Head, Yours is The Loudest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14278b6a2d3e74b2d0295f741fd26e246eccc4c1c2ba907d7783088327264499. 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/QZTB52426676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5029d380c8991d58e48e8dd1d8ad9031c3f472225c9c6487cf20278a4cdb1a. 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/NL4WT2400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d377d3e586846b593f4cdc03b99bbf408119be387aa29613c0388f3dfcb3c0. 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/QZES82401665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11332df944a679697c691e23b5cb2882085676b837f99c969f68cb3bf42bebd8. 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/QZWFN2319649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae203e1668a0e09d25c85fa55ef2771c0391ad8f6cd4ebf225df50384179d253. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZWFM2358230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d7e8eea70fb258c201667b3457b6e625970b2495d54a60ca2e56abca7090b7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZWFM2358231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60427c254cf0299abc22b283cc6f825eff174f1b624fbf110546ebe01a5b2f55. 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/QZNWX2352983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb875ebe7c1b9c1465199676f8c7d54373ce8f9851f6eb6b6e981bd9a6ecee14. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZNWX2352984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8c819a423b168db3a3dafb61869a74147cd643fda126539481d4795d22dc92. 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/QZNWX2352986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa511c0c9a36af1616eaa5b083c14462c425afc423afb6fc2090a0bc19dedda32. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZNWU2387178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d15843b1bb61dfeef9b4800bff54c83216f27e56e6d7a9a68b41f60f9e63b91. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZFZ62352800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6383a42dba0d4f07dd6b9eb32f4d75b95de1df5502e6f397a3d7aade4d6d180f. 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/QZFZ62352801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d34c5f795420ad4b501f6f2c6af840d69d73d4caa88c13b4cfae6bc9af45334. 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/QZTB62289569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a933dcdfdfbc6f832281a55edc27d0f2e6298e4a43fca741de093576eace7d. 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/QZTAZ2225312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a1532e1a8a2661066a77e9967ae0e2f22c137f9a16c699410ec1830204889f. 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/QZTAS2294489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434ccccfab15910e28812c89358ed33e3cadd90952f17d9da9993fc014263a04. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTAX2288940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a39b890fcd74592ae81d5abf8c2e36f10f586ce2a1ce5036e51040fe9024347. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZTAT2286350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adb97438d78469ee872ef3b5063a519c0f9868a55289d0169db2ea8d7de4898. 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/QZNWY2247763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863b28cc6a67b52fac004dd26cec745f46561d3438cadc531186e7d61f383785. 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/QZNWZ2210380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d58b9be9ebb0e8daff5d07a86eb8e3e60b4d4009cde8a899f61121971cd128. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZNWQ2223879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc740d3dc25218acc9314fd931f0c74608d273fe71219e5ebb0c7438f76c4f9e4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AU3SE2301473.