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 0x860ea6c60e758bfb7750d3ccaa1b5ca85dadb375bfda5a9d7ba7953ead4e73ee. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7d27c49-bfc6-4ac6-b9c7-e814968cc69f.json and https://artists.proofprofile.net/proofs/artist/b7d27c49-bfc6-4ac6-b9c7-e814968cc69f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0aebd4f072aa425ee12d2336ce20b2631761847a9646071317bd78dbfa76ee. 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/QM24S1840939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf37f8e05c450537162603942591966087b72a2407978eb7bbff2c951b8d570. 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/GBKPL1973816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5bb02be509c908c2510f5d90cf89a4ad1618909235cc39d37aeda5f3512573. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBKPL1973821.
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
Dysphoria Sunshine / The Girl In The Mirror
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd26367ff73594b57a4274bcb5e774679e3d93df8fdbdebed707684e2e532ca. 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/QM42K1830106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3451f13107e6289f58f3d014ee12b9a09434bd0787848e896e2bfd69ee46c986. 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/QM42K1800570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096b4b8e34f1fe0458f9500945a039363dc27832810e0cff5f0acaa8e70715fc. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:31Z), 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/QM42K1808636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e954cfe57c8979f6730078481f0beb260a460893b10720f115a43af30cbb728. 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/QM42K1858877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3d8dabcc7ddf9c27395def791230bf1b89ba928fa2c409d79b692117d9fbcd. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QM42K1896119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fbcbcaf29ed25bf2057145188e0ccfada69fd2f859e14646924c6eb3f9eabe. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QM42K1828070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1c93fb7ad8381901bb2a81e54f7b99b758acde77598ca67caaf41001023789. 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/CA5KR1707111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0452b40595bbf77f4505e23c828e98dec49eec56694c4e104dc105d64356c00b. 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/GBLPF0604911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad31b544290bc944a9d90d295b8fef2f1447566fc688ca06e41bde3de767fcf. 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/GBLPF0604920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329158a67b60394977009b60518b9fcae709324d8ba78e8d1ed31e18d8ef62da. 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/GBLPF0604939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eec30a60aa15c03c4db84a14cca89ef90e3450acbbadc5605f2771c8c6b0291. 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/QM42K1783897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef374c706f133a33d7312b9b7deacfa242494ef216b53f90516c1410f19882e5. 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/QM42K1716122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131ce3c901cd3ce08f6d8ca889d2b68058bffe4487e4e2f1f663c816af587098. 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/QM42K1722532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727394b65e33c3be0bd4cf1bdbccd377f03bfdf62bffebc2c3ab5a6db20f3a49. 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/QM42K1799471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5223ffae10094402c25f879a7f7519c2c8e8d3587356f3df34f9eecc52c599c7. 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/QM42K1783954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121fbbae9f0c94aa63a1f45d0bc6875a5a9ecb864140ee4c18f45ee5346dc8b1. 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/QZFZ21903558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13aec490e211293ac1b76ddb7b8f41fd3ac2fdec1f53266d414cc2d31ee240e3. 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/QZFZ21903570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7955522fcce253f32a3993aa06acf16edefe2b74781ea3c8c0920f6c7157ba2a. 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/FR9Z62000331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa339741dca823e5feafc6356eaf7f7a7e7c4329f0687691eb1e4bdfe2860871. 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/FR9Z62000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f21fe3f9b242c33284ba41d1f93a4827f556adae950a55a077002a1dde60d4. 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/DEQ121747713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ef86cbdf548f8327f43d4262ee363b0e981267830e110ad7fc5dc2c7ab0cdd. 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/DEQ121747717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5905f9a85e38cf4b372d005ce20507ed19876a921169cc94915f873027211af3. 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/QZANL1726759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f9c7a1f8f2522467031edf835fe804aeb5b7c2c18a34a9ac00fd890efef422. 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/TCADW1892017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4855e3b9d90809beefc280ccdf2a42e5ae6596a8d098c4061b9668f15ce46f. 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/TCADW1892020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cc27e6e979040fad8185d98b07b2d9d26c298ce7a3cbf29ed15f1f876def93. 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/TCADW1892045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1ddcf8a160e7daa4a33fe54de67f97ea765059a05e54387ed3feee222a2220. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBLPF0604963.