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 0xb72b6b1e75054d9f2314fbc06293597026f83a003b7796e6d8c66bf8a889ddd1. 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/6f82f2bf-29d1-4a0f-9d98-a06b7e39dfa7.json and https://artists.proofprofile.net/proofs/artist/6f82f2bf-29d1-4a0f-9d98-a06b7e39dfa7.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 0xb7c200e90d3376eda47ce9025689ad8198bdba14f7e83d0dc4eb899bce2d9142. 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/US58L0517001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd7c14a9d64c2dad98979ca513c6bc1787d9593c3f3ce7819804ce8f10db065. 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/US58L0517003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707c944477ae2f65d6d8d7868d936a2c7d76952d61313f421e679bda821d6567. 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/US58L0517004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9448f36a012d84a6183aad9bf92de2628d0b7d01fb6683e43c79f5307c52acd2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US58L0517005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b39205642dbf6677da098ed42a450d6040fa479b9f67a52fa5c812355e9f703. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/US58L0517007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0caa949f527a329a9a1fd596a158aea1d09411d44a2248236f988565a2da5d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US58L0517008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af4d1d3cb1c8a13ac15c9513adbdbe12e256fd220c78173d5692df01316128f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:21:44Z), 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/US58L0560801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094fea5d7b6272b749528d7642509c69c21d8ce7531ff79c17da3b88dcc3584b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US58L0560803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8811728bd83b8c2b60ec1fb5dac0bcde72a95cf6fb7f04c434ddfe6602999a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/US58L0560804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7eabc08b6aed77e40711a7a7bca3d8d2198a2c6e9240786c82ff446cf8f21d. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:07:48Z), 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/US58L0519410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f271225d1952db7185f56f62140d24c0ad2b3dba9426bee2e7fee732e467187. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/US58L0519411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf935153219511a1c1f86570f77546ed643f24dcfbc9d3f2f0d770f8080bd34. 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/US58L0519412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0237c637fc7d6541686f375ad6060e7c7b29269b96f6b2f337f8c1f6bc64666. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/US58L0519413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7580f1db5e1ce0c92d5c2bc5f9bd7e8ff911ee9c6f68faf51d9bcbcf302dbd. 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/US58L0523102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2bcd3285c8043c86e613c907071c8a4af91f95dfbe9fdf91885a801e34198e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US58L0523104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b431c036d6bea81c52cf175d5f8597dd037f9ae2afb9f54ce4696630f10ff5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US58L0523107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde51284bad30461833bdfbe3d02f9c4a21c5f7427abbef6858cf032c46849f19. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US58L0523109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85424694060939c6c05b78d66450ab970b8ce008736d453bcce80bb1462def93. 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/US58L1871501.
Thank You For Talking To Me (When I Was Fat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd39158db051d0a528ae44c20b0c173e4d5cb2a5dfa600bcbf69a6de4c748bc. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:14:45Z), 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/US58L2484501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6862fdceac89f2e96692192b4565d05d1b3bf3c71a1df653621159de3df4c476. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US58L2484502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9ef0a7232853beb02b5409c6fbed0c50a6c753cb455e8b78126c831a334546. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:06:58Z), 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/US58L2484503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891895ae2d329564054cef27536c8df17b462adc02244fca443dc94286b3f295. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US58L2484504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d695e34f37ff9c3a6693a6c97bc50c46d1eaf8bce14eb24544b3dc976900e3. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:47Z), 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/US58L2484505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8240152ce507773845169b7267b4be84cf18b82358269710a2eb7e8f0f740a. 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/US58L2484506.