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 0x7060100567012f64d2044ebbe30bc67de444be59d14ff71cb70fe10541172943. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d1bd612-7ddc-409e-b311-de70ae6389f2.json and https://artists.proofprofile.net/proofs/artist/6d1bd612-7ddc-409e-b311-de70ae6389f2.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 0x09618ca7b86a4cb68148fc57ea65f132150ad8ae658c53095b003f06b6201f9d. 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/QZW9L2341775.
De callao a parís con un dios de testigo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78b874ff798be168bf06e7bd62fad1e814bb67852d5f20d97271c28e0cd8855. 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/GBLFP2515327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8663e211fb3919334e4b9af35708b845dc13f23c2f0c289aeed5f8f5882d69. 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/GBLFP2515329.
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 0x11efa1b9fc2b5d8b13f62be583ca3a04888813299361b1a5b5865aa9d3bd07fc. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92583261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6f49f732f3f4d66de31305afd9acf0b8640fbea0773b5c1712c1df546fac1e. 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/GX3Q92583262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae204612c7e060a906bd07f678e9e8b0ea11d9f03500e287b4e4f6324c30bfd6. 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/GX3Q92583259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e43e4a2be94676ec56d2f9f26de1d5dde1385766c49a1d2d9a5b6a5f55e33a7. 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/GX3Q92583263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3396ea90acbb14cd29cd2b776043949d7def91e802cb23fa7811063a949b94a4. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GX3Q92583260.
Diamantes en la Noche, Poder en la Sangre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc12678b2392a97960204712ffc0502a251599d55da416a823c638d9d4694b3. 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/GX3Q92568077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddd2af6534e1c359ffcc10e74f51b0215d07cb4fffbf8305e9f4eff0abe7603. 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/GX3Q92568078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a975c1607242b55343f931a7f01065c91fe243e83b495eab22e0ddc70332bbd. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GX3Q92568074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6ed4b36c505773c8a017fcef036ec6393148901906dfd6cc460e9b5385db1c. 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/GX3Q92568075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea601151eb24bc1230d94edcc9b231178c4f4a79e358b69babb01e5eb762014. 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/GX3Q92568076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39503d33e6549f2de9cef8bbc0d2fc77086dee85bbf4586427acd85b0644466. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GX3Q92568079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c33462f7e9efa09e445f661607959a82d4ed5ab392d58924da419d18e528e1b. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GX3Q92568080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69578b3958f1dbc7ce0fa05813a0c25434e65f6e85acce2623955433ce1c4a8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GX3Q92568081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4768546ff416686e43ab93c93f0bf34b4f2e3f71fcd599fd0a0f3070210fb0ca. 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/GX3Q92536097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b51c73b5ef263c48f4664fe2ad6eff0716bf6bc772a13e43a740396ca89163. 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/GX53U2347811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2667bfda15648080a9a71a36139fba7e5780b564ca28d00ce5ee4a189b382a. 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/GX53U2347812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ba9bec546cdfee1b3e0eea55d5d1037b647d87a81a2f999302a8b2becdec27. 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/GX53U2347814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fd80983e5b547fa692f8667b4aa0a267125f7da1d07b7ad2ed3bed9c20d4f5. 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/GX53U2347817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98bf5cb12c87c99f77b31f585ac77167af1ac8daefc8951a525f8413b97b2e4. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/GX53U2347816.