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 0x442b248fb0f1fbf3e8594eb8d409d993060acd4abee9d37cab5246e6d038bf33. 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/e917349e-5d21-4501-8566-b3e079a29609.json and https://artists.proofprofile.net/proofs/artist/e917349e-5d21-4501-8566-b3e079a29609.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 0x3e6096b95516f659b8472531544356b5bc6124238984af63b2cfc8009086b04c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZK6F2164880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5e6f796599376ce83472890a04a6c94e276e85ec038edf4023dd34c0731ed9. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZK6G2195318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b99f7ab4a454b15211ab1f473cb8801e7a87bd752c84b44f9a8dae94742724. 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/QZK6G2195319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298f9dff9a1b099dd9ef929f7b582c8d98b2e5f233ac943e9e5b10e3c03d6063. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6G2195321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e12ee028b55c86ffc25f3062caf7f51a8cdffb231997dbbd62c4829c381fa84. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZRP42143705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b7180ceced550e75938f22b99ab572052a32a702b90975722de49fcdc7ce4d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZRP42143706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c38d7ab3739a7e751e4b7ec622f5fb373dd16fc0c2f2eb276e6e27a5090976. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/SE6QE2226374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292d11b8272ded19e03a2f8ba2f3921b9f3d85ccbfe21b9eda8ed6b1d5f1da62. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZTAY2287929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad4f0719a07f915018c8292bc8f2087b9c9596aa96b07e7acaeb3035f6b5400. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB42293711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799cf939682b4ffe8f5f9400066058b6b9ed4300257162a26aaf6faab12b83a6. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZHN62326592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9513c6cf34a475df5327794198ff1f5dd13861c816c3ad06bdf19a6737b4b004. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/QZTB62316505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b18552c7e6a898e6fbe21547621d027bbfdc25523481e0c6d02f7728186c9d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZTB62316507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521a98c095b9954b483b7146e12e169d685089450f7b255ccff2157cecfeef8a. 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/ZBZUM2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44876e6fbae569b3fa93ccad72cd164a0636fb075adcd034638eb5d9b96d6a36. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/ZBZUM2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cb8d88aea8f193a70cdb34c41f70cffa5967cbbbecd54f4acb76c78ca18b77. 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/ZBZUM2500019.
Boom-Base Vol. 8 - Back to the Streets 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7090e96d6d3b0fcc4d3dc7b1f6db58cc7303711126ddb71cfcfe367f23eff3cd. 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/TCAGA2256178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3091e797f3bc9b5eea015f4a628c8b16851c743ca27083e7ceb5df2c3b7bc103. 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/ZB6RV2400167.
Boom-Base, Vol. 10 (Back to the Streets 2.0)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46260875f9ab570898a6df9418765f632e8badbda64c532e2987edf1a5270b23. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TCAHL2315877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6a73fca45a639ae436bd4ddcd9ab841253c31d3e65f24e8a9dd4790264f44c. 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/UKXN22469422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6a73fca45a639ae436bd4ddcd9ab841253c31d3e65f24e8a9dd4790264f44c. 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/UKXN22469422.