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 0x49ca88382ff3ea3930834afaad417c3e0387df286d953d911dfd1f8442fa380d. 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/8a9b666e-1e05-4165-9389-1a9c39e7e918.json and https://artists.proofprofile.net/proofs/artist/8a9b666e-1e05-4165-9389-1a9c39e7e918.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 0xe1d77da23dd3e172b546c4231cad6698015b55a2605bad2023498ee9cb5897e1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JMA020601375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30677b288e164cfa8faa3a88cccc6721ca87fd49d82acce18ab3a64d0be71ab8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JMA020601378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f48b95d9e90029d67bc8502c9d2da8c1de8ed2d266df7211031ce2c6b323332. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JMA020600412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dbff134f62c51e81e1bd729ef8bb7d6df1ac19195959eb8152afe98b287a9a. 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/JMA020601381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dd9f635e9716dc604708d915efab1ef7daa0c9b36721c659bde04176c60e8f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JMA020601382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea09617c5b963858258aef60f3a5a1b92562b9b3476b4e317e747adc6a0ec6cb. 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/GBQXA0910992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b355949864ede2c31160bd749c480bfeb41ed582b3f81d6463a768957fb73c8. 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/GBQXA0910984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01033ec3e94eb89685179c22b73bfe51db0e6db5a189d17d3970d499cf1ccf7c. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/CH6541810229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee6ad5d91215633607d8cb2143979bdcdf1554e2be3e9a0ef2a96c18934faa4. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/CH6541810231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9684f17f2044c9edc8be13cec7aa4e535d7c94cc82020db9780749617d16a1b3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CH6541810237.
Soul Jazz Records Presents Studio One Showcase: The Sound of Studio One in the 1970S
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e18d7d28987ce4a952ac61530c51c22141829862c7b55671ede262fa5b0ab60. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JMA020601965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e750c5c79d65848be97d5fb6f5e83442896e5b8570127c930fb9fab3f06c49. 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/GBHWT0500322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c0a649babf02e25f9fc35c93c2cd95382d698e5689711c2c21163a33586c6d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GMA020600143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ffa2f9e0bac2c186730c9de7abd408ea7bf0c7578e5a398e529b00890b3712. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBHWT0500210.
Soul Jazz Records presents STUDIO ONE WOMEN Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97942f3a8ec7039a6b69012e5975338ff5b2ced30a131943eabb010d8c5c916f. 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/JMA020602441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20eee493ac2302209d82ca4ddcd9d596db95635a7108515c9c7b90d97cba3895. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JMA020602278.
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