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 0x37fe98761e131e87175b715c43283ec784cdd1e5433402d801e250f2078e2086. 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/72f1f9e0-a283-4936-812a-c43fcff7290f.json and https://artists.proofprofile.net/proofs/artist/72f1f9e0-a283-4936-812a-c43fcff7290f.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 0xd188f13755dbcf57039be90e652de4fe5150f5206ddab752ac366e1e6c6e6a7f. 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/TCAJP2515842.
Time Moves So Fast (ABGT571) - PROFF & Volen Sentir’s Timestop Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c5e7a35a6df08d922191ec70ff540531a882991af0564f4eb4b7b38035f4e8. 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/GBEWA2401444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f883696cbef6fd2be0e45e6e348dfd4809ebfb38e9fdecb13bd72fb2a4e7836. 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/GBEWA2303460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab47cae6bf4e5c49b588cb3e38e8512c98ea646c2fdceedfbb7e4c6040ad9624. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBEWA2303464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b541b023d8189d648cf70b989fd8e56386d3883dfd72491da37461ffd030da5. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/UKSP42000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2249e6a05828ddf3af9b9c1e93fa596df657f3475e4a8f6c33b84a9d351b5139. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBEWA2303463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6df8db0dd90f79a43634a168b03f236c5afa9c79ac41c1207d2778255ef43a. 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/GBEWA2303652.
Lost In Mind - Volen Sentir Vision [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e3bfb54a361265b470d7b1f40eca9618731ec13987b4b18c98bf5d5cadab9a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBEWA1906069.
Let Me In (ABGT553) - Volen Sentir Secret Technique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c05790b3d673bf251279a39aaae43b65d161419da4b8e470e5f5f53d92c6b65. 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/GBEWA2306220.
Let Me In (ABGT552) - Volen Sentir Secret Technique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d7d137ed6db5e3f2964715af2996a83c0206cbc2c1cfd68bea4898899509d0. 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/GBEWA2306035.
All For You feat. Luke Coulson - Volen Sentir Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569d05de4ae5ece73e6a708e991c01225168bbb16737d4e81d3afe8b406cb38b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM6P42325342.
All For You feat. Luke Coulson - Volen Sentir Alternative Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9580980c2bca89702dc4e100679f0dc17326d94e9d833e73bec7412504b1e1. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QM6P42325614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd309e03178edd55c447a72e2fdd205d920089966718a643ae710e4fe135761ab. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ES8741825114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6c9f12dce35559e5ec599d1d05050c225e37a820afe9c2655a1374f4a3df43. 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/ES8741825214.
Reborn - Volen Sentir Sunset Mix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe515cb0558f52e15521fa0e42e34c0af88f3702344fd9d71fca63b355910b996. 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/US83Z2022382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8444c567752574d67a278f20ccaa30fd8462d29be1a3c98f04d65a24d71f96. 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/GBEWA2402645.
Na Kryle - Volen Sentir & Izhevski Retouch - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40813b705fddd3280ca124179e3cfb3a9700406ff32a0da8555baf899609fb6d. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/US83Z2233080.