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 0x026561f6ccf40e67b7cd4f118064abfdacc9cb4fcd8f6a2a7c5ee325077c4d47. 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/40e4d5ff-d175-4bd0-8b5e-4e103f1b5bb9.json and https://artists.proofprofile.net/proofs/artist/40e4d5ff-d175-4bd0-8b5e-4e103f1b5bb9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xb84645e906fb92f080a36a0cd41647b976cd31921781ebb853e0d5c00cf384f4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHK90805755 — a six-check JSON result.
Believe It (Cazzette's Androids Sound Hot Remix)
Believe It (Cazzette's Androids Sound Hot Remix Radio Edit)
Believe It (Cazzette's Androids Sound Hot Remix) [Radio Edit]
Believe It (Cazzette's Androids Sound Hot Remix) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0f933449aa6e40c59ddcaf5349cf28cf58366597a5be190b81caac07603bc1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLC281112410 — a six-check JSON result.
Washed Out Road (feat. Lindsay Nourse) [Remixes]
Let out da Freak (feat. Mimoza) [Remixes] - EP
Believe It - Cazzette's Androids Sound Hot Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3cdf0bd6cfb948caa6288964c724d708b9c952d50b075803a4e5018fcde104. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHK91790399 — a six-check JSON result.
Washed out Road (feat. Lindsay Nourse) [Remixes] - EP
It's a Smash (Spencer & Hill vs. Dave Darell) [Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7795c3d763452ab689a347eea9c66e9534bcdd563f697f429bde8af9d0b82c2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHK91790450 — a six-check JSON result.
In the Middle (feat. Joel Edwards) - Single
Girlz (feat. Giovanni Tha King) [Remixes] - EP
Jump (Spencer & Hill vs. She's All That) [Remixes] - EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473bcc1435802b3dafa536932849617c17b1df33dd85e859397082cd84d7614c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHK91790536 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f1f26fde2498d2d99c4735c1c9dcff7fc6c25a4d2f7f428937705947e6726b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHK91790396 — a six-check JSON result.
Believe It - Cazzette's Androids Sound Hot Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdefa4114a14234431ca2f09c84321109ec5b4428e45d5169264b93231c89dc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHK91790398 — a six-check JSON result.
Mysterious Times - Spencer & Hill Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ff62f5b12b3ddbf9459931f83367c7b7c101a192e2ce1d585b705b8da1f421. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU770800010 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fe9dfbcf2d32ff48d2c9ff3c70e2142ae9ab7e80110a81cc2ce9c583c4a53f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU770800011 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7bb508df555f0f22812bedd786b4420e967dbfd6cdb8698f06d623559fd01b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHK91790612 — a six-check JSON result.
Set You Free 2k9 - Spencer & Hill Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0684a27a74f6033e2e526017767831798813da81928d23d1686d93d2786b82d8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHK90909401 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a380da1b53ee20738dbda189381f0b74f872da39b282ab2b44a80261778864e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHK90909402 — a six-check JSON result.
Behind The Cow - Spencer & Hill Bigroom Mix / Remastered
The Ultimate Aural Orgasm (20 Years Of Hardcore Expanded Edition / Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36892745a2f134125428c391d4861faf3f17342cac4496802cb1a9033ee39fb5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN061302177 — a six-check JSON result.
Behind The Cow - Spencer & Hill Dub Radio Edit / Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03c4bf7bf5db00605cf97791f9242db5536debc385928998a5fe0bb9d147d8f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN061302178 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3524ef0e822e06f4e31db5476c49c09c229208adfc8723adc87739fc6df9f2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082234418 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85882e81772d3ff707fe28e5d28cb4f23dfe4c002fa6085a6d98a569bfce030d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKGL50900213 — a six-check JSON result.
Yeah Yeah Yeah - Ryan T. & Rick M. Bootleg Nightcore Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1aad58a5dfcf0fc0057a2538872d44244c1f5633daa017eaa2e76741f2a039. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHK91688175 — a six-check JSON result.
What Hurts The Most - Spencer & Hill Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2412ae5d57fb086b4d28394fe3ce3d6a6a9dea337a885addde274a62914b03. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHK90780104 — a six-check JSON result.