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 0x1d758f0bb5159e81166821272c9134bf45fee21ab1e8847a3cc7120dde652267. 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/5fa4162b-893e-4622-98a9-8f4ea2c48d13.json and https://artists.proofprofile.net/proofs/artist/5fa4162b-893e-4622-98a9-8f4ea2c48d13.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 0xe10a40baa8ea23eea487233292a7a507eb6a7b223cc52a100334376809c6ec62. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRX201706756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10a40baa8ea23eea487233292a7a507eb6a7b223cc52a100334376809c6ec62. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FRX201706756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5c891588b5ed50083460325f484e5cfd81cd57fb12a4583a3126966b116841. 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/GB7RM2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7d61640186c1c27107b0ce8d781954580c71c3e7cff75e38b162bd8a2763d4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GB7RM2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb8a8414aeb85f3ed1d0ff36312224654810c271af3775993ab71fa8967e887. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GB7RM2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a57a8cf415d468033fb155a2d5075bba6f561e867e0fc089afac8a61ab86987. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/NLQ7C1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f88da5fb4f20fa2f6a5ec151b0bddbaf9b7b1c34ade73a8d44ceca8c8a36dd8. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GB7RM2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1f489dbdce5e4e251f5e2a01becc0f8f88cd79a91bc54ea73974e0de099cce. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GB7RM2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbda6c9121cd0df94fc3e7b615c0e131d14fabd5fcfb7804ace15f4ab357c43. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/UKYCV2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf151eb58690ecb21a7c0298590d094a105c5f321a4e35626d9fb2948bfddb053. 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/BEN581700309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03adf58efff3a4ebdcc97bfa36f89b93b35c8dc56c59ecd4bf8414444662b51d. 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/BEN581801214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9b0cdd98b791e4e577687830c6c77e5dca1f39ae8eaf9bbf967d9b3bf6ee26. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEN581800070.
Serpent Strut (feat. David Harks) - Larry Heard's Fingers Deep Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b27ad02cfdf726e28a7f7caacfec585e1c3468aaae9b2ff0876fb6a7ff44ce3. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/GBSWL1700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb726b9d861b527629a7f271daae672d3c501ea42d387d9028eb687dac41261cb. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FRU701300122.
Serpent Strut (feat. David Harks) - 40 Thieves Mix Parts 1 & 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df601fa83412a77969c07c049fbdfcb85f8881ca303a00797c992c8fac4625e. 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/GBSWL1900079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5c891588b5ed50083460325f484e5cfd81cd57fb12a4583a3126966b116841. 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/GB7RM2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc889c13b6108a24f9cab716f181b1b4330a88215078bc532dcc2a3ea8f0b4c3f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBEYE2400040.
Magic Eyes - Takovoi Romantic Collection Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe632aaac62a8ce597213fbcd8ae24bee4fef309459dab6a4601f2a28863be3fd. 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/GBEYE2400051.