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 0x353cb8816bde127ac39de0d09840403dcd007f14967d082dbcf316bb526fb142. 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/526ef83b-63aa-4749-a259-b272f6b65cb5.json and https://artists.proofprofile.net/proofs/artist/526ef83b-63aa-4749-a259-b272f6b65cb5.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 0x9dd2d48c15eeaa81ffb67c3b53290740cf002ba40ae782ba35995e5125ebc080. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/USB4U0651202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9422db3397d53e2a17055cb57629af839c8de9bb7575e1b07b45a8175363f395. 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/USB4U0651206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb61095605916a3e9ebb4ef1ceb36f4f137f6143438030c4458867077d0d787. 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/USB4U0651208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e7dd8b089e96c9056009ba87912da7561ce2005ee952135157bd2ab556d054. 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/USB4U0651209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28434707c1e6e2385a3cf1a2ca7fba2d67c8ffd068625a3c0a10e7560febf475. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USB4U0651210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e052ddd686ef10e770468cf3f1c4371890594f08b1dc33e1f9a9854d08660b7. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USB4U0850291.
Birthday - Kids Dance Party 2 Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7a12fb7eb40f99edcca0cc456a05661cc9784a3fe495f07dcab82e670a8f07. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USB4U0850298.
Kids Dance Party: A Salute To High School Musical
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969e37bed53025c1f610451a94d073aa065217480dd74f121552ead79086f32a. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USB4U1000563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf42d0d4358993a9e8eed348efe1b7e5593a4f766c3dc3776a7ae11645472a2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USB4U1000570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7c9ae1393d5f88afc14e2be6f65423b8dd2b33f0857632b87c33286df4c87d. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/US86A2300260.
(Shake, Shake, Shake) Shake Your Booty / Disco Inferno
Kids Dance Party: Ultimate Christmas Hits!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6079002b9449151356d339c84bec81fe2708f5e00d4c3e4d3fc842193f0094d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USB4U0651204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffd2e9f593d49d67d259f212a0ba0104bdc4a9b20b93693f058375fb93c631f. 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/USB4U0651211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda63eb01a2569b5abde874f2533412826a3a5e3646a14484d69439c0e1ce43d. 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/USB4U0651212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9422db3397d53e2a17055cb57629af839c8de9bb7575e1b07b45a8175363f395. 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/USB4U0651206.