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 0xe2fb274b6e6abb884f918585bb50a03c42f6ec009fe6fc3aaf828444e96a3680. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/acf6c30c-1dab-4f9c-9178-8bcd239b4b6b.json and https://artists.proofprofile.net/proofs/artist/acf6c30c-1dab-4f9c-9178-8bcd239b4b6b.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 0xc934fee13ca1b08b728eb42ae30926720aa5d35ba476bc6b3f12c0a745100bf4. 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/USHM90705113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960a79d425c60c21c015049bdf721194bb242779981bbb55b6e734d3a0d177d6. 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/USHM90705114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cb0762a2deaff746bd12448ca707b81f9696c200a79e06274225e74ef7dda8. 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/USHM90705117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04a5c6ee8ce64f89485f169c853bb4ca6ffd3ad94c1c4fd754f2850ee473ae3. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USHM90705108.
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 0x426319cbc042e8c116524baadc31eacadf6fe212faa97f5cd4d25933ff78d632. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USHM90705109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c354fe56f5ba6da3cc08ba2dd67b38a0359ecf805a7529fcacb28af603eb06f. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/USHM90705110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ef5ad9fa3f6337bbc0c4b56c49943eb56f5f59ba84b9b8fe632aea713738cd. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/USHM90705111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a89f7f2645ec929d265d22758c296227bcbe63a74c34944833562d0381b2e12. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USHM90705112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed1de30926245e3f1b70390df701268d7c1ec80fdbceb885859169d544f174c. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USHM90705115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676d94d7bfd8aebae0dec66e2d4c147eaacc965e91d209f8a0e8baa2122efc5e. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/USHM90705116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79631f921b225fa4251bf85c1aed565b630ca031cecc5f976dc08b0bddadb29a. 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/USHM90705118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fe7d3a822321b3c081a4515e7d88a63e4101f23a4d7ed6481e9d099cdc648a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM90705031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8ffd16d4af3d552e9d43059d5e2a561b4a7e3f38f6d9cfea74e91e6e9f9d43. 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/USHM90705033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb756fd5031157cdae1c0d885628028530901f24b14e44602d2e6506b79ab01c7. 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/USHM90705035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe469d6149eb6951c2722c4fd479e4726c69f5d93a952e01d7f553cab96fa9478. 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/USHM90704976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc230fbf00a04183eb6a67c5b0f33f57e85bad36fc71c5f01a47bd2047caebec8. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USHM90704969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682d110190d7ea7c75f2003dd6ea73d8f64f617c119f394735ca758db6b9880e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM90704971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393db43cba135d688dcc10e26bdd2514907c5c7cfd33f0ba364521db81395bb4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM90704972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b3b121131eab90a583efcd18ef6095a55db612f9a9d6a17177214787e614fb. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USHM90704974.
Calm Equilibrium (feat. Parvathi Gopinath & Jeff Ball)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39278b5ee7c3268a30ed263c3eb3fbb232a0735427bc9e52dd3f023a9f60266. 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/USCGJ1679700.