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 0xd14892a3d3f893db595f652982e0e1c466953d926f930273ac6644daae32d113. 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/c4bbcc35-d004-46f1-9a1b-7254c74d8a67.json and https://artists.proofprofile.net/proofs/artist/c4bbcc35-d004-46f1-9a1b-7254c74d8a67.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 0x97f12d9e41872ccab5be639bc37c489363f8d60c52ce6471a24c4f3ba00b8cc5. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DEBL60555128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7209a23cb2ff87dd4d6c4bfdb6c0af5ee7185c81e96b50b5c4234cf6f59989. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DEBL61372416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35594b408847d4bbbe924cf3d7cf4bf067daf18f3cc895a965876da4aca6a91. 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/NLF711602095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ce40e497abb4559244c9edfbd463ea05542b15ea20c2fa51e092c89d36e92a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IT0311700052.
Falling Down - Alex Cruz & No One 32 Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7def9535c348464e4e79c38adb1c7a9414fe37c2deba79fb267e24e803ac34. 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/IT0311700059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2eaf1bedda3bec2eee3db8abc5d047fe48a7f798eb1b40012bbae5992295ed7. 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/IT0311700053.
Falling Down - Alex Cruz & No One 32 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0057d91f7d9907da2333e40f121332243d56856bafa754db92d0b0f87e5b49dc. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/IT0311700058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb6ef4667041de2120c2504ff29d8699be4ddffbbe52c03732b3080007c778b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/IT0311700073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd80a42d5be03c748c0e7f9328b6f4880eebabc634309e7392f7baf9efdb5c4. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBKQU1746130.
Ego in Ibiza Selected by Vijay & Sofia (Ims 2017 Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba7dc1588e2de26618fb1333fa0156427b25749d79eec45a061ff61cf4776ec. 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/IT0311700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2740a7feb10d3bc76bcf76e03f61051482baf277e83dcd2de876ebbb75c0d6b5. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/IT0311700147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d350b3f5e22bcc75be3f0240e9cc3f36e253f6fcc17990dbcea08a655c4cacd. 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/USA671400484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852ecc8d1832241aa79b056b368bb071919ffda8f3a26dadbe59f72725627969. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/CH6542054950.
Borders of Reality (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
Jamil Cemil (Mixed) - Vijay & Sofia Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98aecabd87ef9fc591041837931f09b0a616d4888c6c2a97c5b1c3650ff6309. 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/NLF712301666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fecbe2472187b9a7b77cf80336a9904a21d551f0c6b5be0a7b466bf191d3632. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/IT0312000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948cc3c014b0128c36ef63b81504ffd6ccd19bed1c1b76e8284c823dec6e34cb. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/IT0311800161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b325b9cd30aa264f255bd7bfedafd70ae8d80572af746e7d5bfb4c5d1c465ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLF711600588.