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 0xb9d7460ca8929abecb20e3e914362f61b8bc1dde9445d3edc5c3c32d14f9dd72. 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/10764da9-1f65-43d0-8964-19b205796289.json and https://artists.proofprofile.net/proofs/artist/10764da9-1f65-43d0-8964-19b205796289.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Happy Birthday - Brand New Tunes (Party Versions)
Black Horse & the Cherry Tree (From 'Because I Said So') - Quickstep / 50 BPM
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 0xcb6381349ba5f76b6f3373e86feb9abab5f13530f601ec519d9148d7f297ead6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLHR52122032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4755887d56976f5dd25d8684c6e72506a61dee125dc72318a74477dadd1f23. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLHR52171495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f99b89e0cd255f2c2a3ab99ac4c63ca4ca25738953deeaf48fd8db91adb615d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLHR52171496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757f8abfdae5936fdf33b682cef4842fa5b73ff8ec8a367ee3484173b534e8b6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLHR52171497.
Que Ritmo [Esta Es La Musica] - Samba / 50 BPM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14637120f39ab8f11291a7228415f0084ee26357426df1b248cd8dda62be1f88. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLHR52171498.
Take It Easy (Samba Zone) - Samba / 50 BPM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb8e35476ae397163ec7a4d0691640fe52aa0fb1aa569f1ea483cfd0dc5bc7d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLHR52171500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c95314db9b07d21fcbf9d0f6ffc6626b83ec7131af7bdc4add39883a1a0ee07. 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/NLHR52171502.
Show Me How You Burlesque (Quickstep Remix) - Quickstep / 50 BPM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9173bb466320da7bdab4519ea97c2e74c99be296d6b948f163d0858be5c204. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/NLHR52149948.
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
Are You Gonna Be My Girl (From 'Flushed Away') - Quickstep / 50 BPM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac84c1e3eb3c9f3851b789a4276c9e877a090ec82a5de99b89eb302725a276b8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLHR52122034.
Hit Me Up (From 'Happy Feet') - Quickstep / 50 BPM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a7871de9cd76a22c68b56ae80104d53dc4378f4e39e383517a926639405525. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/NLHR52122033.
Swinging Showtime [Remix] - Quickstep / 50 BPM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f22dbd270e22b1c18c9d41f8f97dca612f536fe978e895e11014dd3a9b7ee5a. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/NLHR52149949.
Samba Africana [ReRemix] - Samba / 50 BPM
Dancelife Presents: Bravo's Dancing Queens Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891ce43c9c4a17edf07dec9e3d70386b06895bb3787487830b46a13d0b619d4f. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NLHR52150515.
Campo Grande [Nasty Mix] - Samba / 50 BPM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7ebb02948be6147a629fabd9de7772a9ba3222d71a9a7ad42939c3e88ee987. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLHR52150516.
Do You Know (What I Mean) - Samba / 50 BPM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f446ee6a4c25041c81454b5f28d3253fa3a2654dcec2114fbf8155e83f6067. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/NLHR52171499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1600ac80dd9a9a02af80909c423a85c939e3179c4e7688b0de77846819258579. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NLHR52171501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8d66e6bc7569f65b9168fcedec776f440964d1aacaa69a997ae6a02337e551. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLHR52149015.