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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90061e3fc95b94cd981f9884b8826950e4072bedb1bb5586cfe5272d56230d4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9197aaae-e82b-4cb7-a427-719d88a0c6a1.json and https://artists.proofprofile.net/proofs/artist/9197aaae-e82b-4cb7-a427-719d88a0c6a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Won't Get Fooled Again - Basement Freaks Remix
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02937d578fbf787093b5e5cb9c6ed4bfd4f60f776806e26faa1d351d9cf87a3a. 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/GBFBC1701632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17534e80977d60a8e264ff268fe2fa807399042553dc713ae348ac781653fc3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBFBC1701680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51489f2a601868b9ffa726aaa3df46390168120e79592c7e0ccb3e33d8675cc7. 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/GBYS51300013.
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 0xfa4d4849a432055a98890837853b5e50be931f6f6de399bc6125f4cf69506f98. 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/GBFBC1301044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8e34f689669a5225eff1eb25d9de72813ec671d21f668eafce86a8dc32edce. 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/DEKF30800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213b5853f1998ee9296fc809412a422ca981800da4b23cd3f8f9870759338049. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR0U11000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d2a837729661d27ee5e52dffca027480c04ecd2684f0506f8accfe27681b15. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T16:11:47Z), 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/DEKF30800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2c30461f1b4562904c922f182162903461a351f3b346acad6cdd7d11561f77. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DEZU72100057.
It Ain't What You Got (feat. John Turrell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575682385a14acb3667da674ba328be3e631f178f324129871d19a48a1e7a93f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKB631500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6868373b4a364bd63f440c26b3afc9625b5980a08a13eb77abaac82d5fb4e0. 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/DEKF30800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc662bd59624cf3d6795ed4bb189ce730edb12dd175c72890ef0f125f94ab1298. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USUR41535004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd5000c7e0fcd1dfea745ffd9a803309addc4d84e2210cc967aa23c61f01377. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBFBC1901821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd5000c7e0fcd1dfea745ffd9a803309addc4d84e2210cc967aa23c61f01377. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBFBC1901821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78d60f4573b534045749a998471276ff6a0431264b2a0f091b9ba1758b8e910. 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/FR0U10900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc44a75b367396cfc23e54cce50f6ef46b31ce7f74484f24174b45f5cb6aa4a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBFBC1401188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fffe0bcff459c397130b0c102cfc9e3849f9caffe42c161e811b5ada6bf529c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBFBC1100723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8e34f689669a5225eff1eb25d9de72813ec671d21f668eafce86a8dc32edce. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEKF30800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dfa5d478b03f073b1430dc2d69d5f757eaeed6bf85764d03701cf6b126369b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBFBC1100728.