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 0xc0313604982008ab2ed03d8df363baa4e61318005f54e72d1b1c5351cb2c5b89. 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/ab120483-8b9d-4898-8825-28f8ab08985a.json and https://artists.proofprofile.net/proofs/artist/ab120483-8b9d-4898-8825-28f8ab08985a.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 0xf65417d13bf0b77c3aae793274f7775c072b7ce8b6b255411918250fbbdc16ad. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USHM21212172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3143d483b0649c6b4d2ea1a06a4a33ee67eecc1e95273263497f0fef63eb6b0a. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), 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/USHM21212173.
Where Do I Belong (Born On the 4th of July)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05eff5f72db3ffe6a60e90db45f32971fb75c2641c5631b380c3981565e77a4c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USHM81277842.
Signs (feat. Giant Panda Guerilla Dub Squad, Emily Elbert & Eric Robertson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea453b4e01ac2793712a5fd8885fbd78164ecae94161772d3ce47614d2e3f79. 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/USHM21370711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba635d6824d5d32b6717d15a9c0ddbbbcc03f657c3ebdc15fd7129963d8f4cd. 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/USHM21370716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457116f084ff5a787f801e18dba4e9b08e25f2e12842a56eb3f7340ed9fccc94. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USHM21727615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4e87c37258b30dda0ae6d6f4224952df46c952f670fea3203d95cac6c7b967. 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/USHM21727618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee1a2f8733b599c70a752cf250c6cb585a1d88b051b77a7b59eaa81464a65b5. 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/USHM21727620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46a014b30d20f4ddf60f451d4605c706008f96aec60e7a0fa865124a2e0b4a3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USHM21865626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45af17a23a2695cca5378a8ee081fde36e44cac59b099a07a921a7868e4ec496. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHN62107832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7878079578a17320d24f0d368a3e47e13c4c31f9ff090140200206130481bf58. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHN62107834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030857d574175fdb1b3f2101ccb65b46a904f2904debecb71687844fedd54563. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZHN62107835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0a8e90d3b04f4a6444ea93c21586d5f929229c4195ab3c53b82853b900443d. 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/USQY51786268.
Chill Yoga Music 2: Power Asanas Dub & Reggae Beats
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeedd1bec776f5c3dab0a8863de6930b05eec4e8720e8f3ae89d712cb332ea7a. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/USWS41918607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f74ff6b890b50e1c0da73d0aa3a119512150457659d31dc3b10d3574f4cb17a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USHM81449029.