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 0xae05ce1d9bb229b0bf22a6bda0358043b5736e7a1148387277b855353660ce16. 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/5f7f1b91-5673-4571-8620-b163a9e88d9e.json and https://artists.proofprofile.net/proofs/artist/5f7f1b91-5673-4571-8620-b163a9e88d9e.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 0x3dd57091727b79b1d4e42400069fef212fc2f99a9b553469d9f292dbadc8e7ce. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCACZ1743346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5b2b2c31d5f66f7b31de7ab3e3728975fa72bdba54dd0ea96a172148dc5b29. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCACZ1743349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe2e8304ab24da28f09742fe936431c7e0ba17aa3a0a013d298a8678b0fa7d3. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:31:03Z), 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/TCACZ1743351.
Hiit 2: 4 X 60 Second Efforts With 20 Seconds Rest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeac66cc0417dfc298324d98fd895777848c20b7f80a0baa8a3e6da3ec51e7f8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCADC1750024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c09990008ee1893644f9f6fdfaa1d05455bf14da2454319be0c084c46d738b. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCACZ1706641.
Hiit 2: 6 X 45 Second Efforts With 15 Seconds Rest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6450264a7dd36f935ae9b38e0f4e502493589412c5c2fa393fa8da338e438417. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/TCACZ1706642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8934cc977594a088264f267d542839dbb49d34754b98bb67e5f58ae775e6c8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCACZ1706643.
Hiit 3: 6 X 45 Second Efforts With 15 Seconds Rest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3ef68068a961f787a8cac7c1e6a99bd20d34d356b3e9d5b2edd931c03a3c8d. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCACZ1706646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ad60d21d011a137fa8b9e9f927e3ee0d30648bc77755bbd0358f90797c1a7b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:13Z), 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/TCACZ1706649.
Hiit 4: 6 X 45 Second Efforts With 15 Second Rests
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7492e82812b55a53577dc07d793fff365f828c0525a3339998d60cc187aeab. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/TCACZ1706650.
Hiit 1: 6 X 40 Second Efforts With 20 Seconds Rest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11ef645b2dcc01e79667193e1a46e998c722ebc229d9d7cd62e54f73fc06701. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCADC1750124.
Hiit 2: 6 X 40 Second Efforts With 20 Seconds Rest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf4a23684f4680b87d63a22ec957ceb8ee24bcc54be7616fa1893737e4715bc. 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/TCADC1750126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53359a7305524c11ec4109d8740eaa5ef822d7d711e7c8eeb483dea23a000c2a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:33Z), 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/TCADC1750200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5abd049242ea7276af68d0c4bedba4492a9f3f446c55fa659c9f45ec859623. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCADC1750201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b292a5e44535f731c28aced0c7ebf5dc4e70c83ebeb9a7a212bdd9fdae0645. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:24:43Z), 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/TCADC1750202.
Hiit 3: 8 X 30 Seconds Effort With 15 Seconds Rest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f35558381bc365e3df94be478483ac6c3ad804ce5fe29c3cfcd16358962141. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:07:57Z), 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/TCACY1778186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591b241368722dcf09bdbc0ebb138c7aa95dec4a0ea73a241422f503e460b1d2. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCACY1778187.
Hiit 4: 8 X 30 Seconds Effort With 15 Seconds Rest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ebd4b39cbb7abc9f5996213ca6bdbf267aeaab1299ceed14b5630c24e2d6ab. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:08:06Z), 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/TCACY1778188.
Hiit 1: 4 X 30 / 20 / 10 Second Efforts With 20 Seconds Rest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976259c24e78f2a7cf532240fae0d27ae4d40becf2a96611cff398af01cc712a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCADA1726867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc385ad62a9b75b94baa0400b24ae9723cba6d6a6f654920bfaad5b6e08954023. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCADE1749301.