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 0x45ceb3a93101d90d321fbdcb5f4ffe56b8120b581f49297ef7644b1024de8d2e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11afa4a9-0b03-4056-aa78-eb4fc365dea0.json and https://artists.proofprofile.net/proofs/artist/11afa4a9-0b03-4056-aa78-eb4fc365dea0.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 0x97111b81eda8574bd297336ffa0b2aa951d759f1489848942dc26daf153be005. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:37:32Z), 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/CA5KR0019469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf3b3eb3efc9779d1ab0f09ebe3c7d10eaf6238178275d32055438f6fafe40e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CA5KR0019470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19af2520087e92854d6069ee63c1c68bb11c961b1ddfa7f925f5fa5d11d71f30. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/CA5KR2243355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48386a2debe24ed91b5269f524cac320e7264c9eb295a5bb2a98db2b60615974. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CA5KR2243356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54f495e51dd2c44ee779860a49508c872ffdce31a44d11b4013c1316d2499d7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CA5KR2243358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695dfbeb001fbf234ea006dd179bc74272962979ebdec3f9bf9a45af8a824855. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:41:46Z), 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/CA5KR2243360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7993d6b5d86e8f712099f1a4e9e67104e91da18b7a3fa4ba84b6fcc60970583. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR2243361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a4bd2a4cb8f5698382fb36426aff0bed2790aac6966956bc00461b08563c47. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR2243362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf587821afef001c7310ab9282da9c06a8c9c12c542d7c4b3ed82bfb108e9083b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/CA5KR2243363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93231b02d10110f3af21babd291128381bd9840f5fc75cc7f4976c188cca2838. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR2243367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f40516d2ec73cdc6156ce06f39fa8ab5a542a5429b3293c1889db997dd838f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CA5KR2243368.
Puras Cumbias Bailadoras Para La Fiesta Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46aaac4185401f74f0bb33a999ab1388ff90d9fe00ff3c20acd21283cf47f6a2. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/CA5KR2320762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483f86fba5451eb176ca4f2573e9069895276acc39b0bdb5704e65a2539772cb. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/MXA3V2427407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dde50cf32f58b508350497791af47119a2b94e552cb84b58e51d11f83c759e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MXA3V2435342.