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 0x6c98743059b807fa28547672bc7bed7da2bd86d873991512a96b0f6c97857f23. 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/f162a038-f5de-47b3-8bd8-4eb111d93619.json and https://artists.proofprofile.net/proofs/artist/f162a038-f5de-47b3-8bd8-4eb111d93619.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 0xee37cffc972737f1477bb684c092f94180a654ff746afc51fadb538213510da7. 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/QZK6F2103432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35beabf43056e955272179b635259de2f24fa1c0bc95f5a452b71312fcba13b1. 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/QZRP42173764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4b9cf84260ff89ad3a9bbfcb3e4a54e98de299fc387a6fb62a8a61c3ab9b26. 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/QZES72216257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232716ae0edcbd10a9b12d4d9e4397d4f243002952ccc3bbb41c7c01d2e12805. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZHN72298033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2466e4f7cbf73e628219f3574f28e6552fdb1c17d1e3f8df85d1547360025d8. 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/QZK6F2246309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a45eeda7a655a372828c60cc0be6da88ceb56764ee7d0d485b8ad8cedd028aa. 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/QZNWS2218454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b5f8858f5d76819de68306242e15cf19718f640c5c7160c2e35fc51760bb9e. 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/QZK6M2323657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc411adbc368ed20f605020def5a5dcdba8a43387ff3627062685a7a55bf85fee. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWT2319975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c410dade30f3eb23bda3ea49f7e8d99d1bb1bcf123b3d7735afbbc7dbfc746. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZTAW2358182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c036c92634d6d9aadf6f51f3df18beb8667255fc690a536577fb6eb58dd9b7f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZTB22345502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619360ed561cafd1639107723a8d441470b310e4efb3a120e9bc93665e5f018b. 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/QZTB92320128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402345a84e2a8d5ccbcb2292f9786b4075963b94b305717878201c719aa0c6c9. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZTBB2397584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8099012b73651361f486020d6591dc6267484063a163738c4e6ece46efbee385. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZHN42468944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3264b4e4ba3899b549c5607c4259ea61922661d84c993a8dc2443b9d0616d7. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZMEM2400554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa93d14ef546fa0d0453f805befc52c16cbb02f98f49e1b86b711b46f405c753. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZMEQ2452912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269e47c57964a0bc539920bf09d1bd93d4dd4778369d2a005eb4aa5abe7e6e3c. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZTAS2460577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18991e040c2eaf9ae7a5d301424cb8648c37310b5612bfcbd35a9c641c3d337. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZTBD2473057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c0d566548a96fcc2bf53eaa4f7d18b0a93cc061a89cbe36e24daddd79dba2a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7M2411376.
North Hollywood (Extended Acoustic Version)
North Hollywood - Extended Acoustic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d0d2bcedbe7186a60f7ca7ae7e9904a65f04b398b719ea71a2626db03e900a. 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/QZZ7W2422409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eca7075205ab5d369904d7d9a81e114d312fc1d6b8179fdb020a0f38c27a063. 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/QZNWS2501798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2582c965bbd41d33ee2c67e782b2070aa6422a3b960333150db1f1be19fc917. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZRP52599687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8ceee8c5cf7875c129d37d775e6eff384ae9586d8decbdeba7ea5d2f3f44ef. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZZ762534939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843cf25a42ac20b656663b549abe5664eede93bf025ecd5084e6e76e98a3d47b. 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/QZZ772579772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbab931eff51b1af515c0abfb3f011b50d8886ae558daf8ee1691d250187c31. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZZ7V2517743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde28b2fdcd56e91471689c33badac5b8c0b73d12456c37358b0ed015aaedba1. 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/QT3EX2527658.