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 0x0c69eac56bc1af449c7dfba731b00675293054aeca14a08f21d4c17322c51e0e. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdc407b1-a29e-4696-9546-3d776995849f.json and https://artists.proofprofile.net/proofs/artist/fdc407b1-a29e-4696-9546-3d776995849f.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 0xa3bd2cedfc4e705f8dd2789d015972bd67a796bc667433b4dbf03eb72ec8319a. 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/GBKQU1883779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28afed3fa1371960818a1cce9fb591f9d454602fe1047b197828360fb60dfcd8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBKQU1979611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1320960de04aed28e1d78c04b3549ac354a6410490136dcaf479c7775f13c93d. 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/GBKQU1979624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255d9bbb9de3da50f8d5bd17c045e8afb86cbf3f2b90ba64c57b8ba98207a717. 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/GBKQU1979637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6905a8092dbca2e7ca88f1759550f1cc86aa41b68dcc4c6dc91ee637346b453. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR2X41908689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762f649e31f1b4f25ce7c0660ae454d2411b5e685c9984c15d54136c5fe8bb95. 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/GBKQU1979646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd8f83b99b8512cc009369858947f3e45009cc74e1575623d03f3c13d2181a3. 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/GBKQU1979649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60695e64cb429bc44e696c67c90072a7037b59d0534b04eb7e4f39cd6f2f05a3. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/GBKQU1979652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df1a17d99deb5ef14c9529f61903dc412bdc12a9bb24c9b5a97e4bd613ac7ad. 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/GBKQU1979656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c03cad00f812397447c2281a205980813644e5f12c0cd64ab6b171f05280a5. 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/FR2X41908693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e822d82540bc2416389cc0387a8e472c2531a62c7ca939b513bf3a1b6e3dec. 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/FR2X41908721.
Top 50 House Music Compilation, Vol. 3 (50 Best House, Deep House, Tech House Hits)
Top 50 House Radio Edit Compilation, Vol. 3 (50 Best House, Deep House, Tech House Hits.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1153464290209c56e1b2e815d9622824bd137c42b64f8c74e9b5ce95aa775eaf. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FR2X41908703.
Milano Fashion Nights, Vol. 3 (House Music Compilation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb807d1ea307f9de4c32ab52d2c11e3c5d80a5c587aaa0ab96c4376b023bd6903. 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/UKACT1780590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3862a289062f388f641985bfbfe068f76ac35b897eeb0e222bc266a6052a14. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBKQU1735132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745e87b51f0702e6bd4d32fc852c6b27668dfd3dd80f61541601d9769cbc6018. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/RUA491904818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707e7270a45ba395f20d3617ba879603bfd92a5cb4e114197599def25e2e904f. 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/RUA491904819.
Stories #01 (Compiled by Andrea Cassino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017289ee668bd512ff39bdc9697258fbbfeb594da4154af76448e6ec054323e8. 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/US83Z1665649.
Spring Tube 7th Anniversary Compilation, Pt. 1 (Compiled and Mixed by DJ Slang)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8218302e6fc12d2c0ac924295009ed9493088fbdbb401590ff32bf07283acc. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/UKACT1614858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cfe3d77aa4c7bb4b4f0eaf80d62e6076a8ba7cc9d9edae8c4ca09bc08b0f82. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/UKACT1610568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cd4b7b8db3c866ccb847d225ed07b3e97eea2b7ae0479685ba9b511567f46b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/US83Z1898522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5e9b064ccfe2b1028d1b7fbd41f24d0e6571b339c8ebe879680888c04a16be. 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/GBKQU1755568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb06a1d6de29247c51cbea9b2addde96be2ecb41ddb8f937a7bff87a6f5e679. 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/US83Z1637966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a80a9eed3b344317d01ff84d20150bdd07ff9c8f0e42e4ab50bdf8a24013d0e. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/UKEX32018413.