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 0xf1829e8fee25190ff823d767ba37f2964f11849b94ad58f13ea6de4c8d549b75. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e37ddff-1ed2-439d-9c52-1f1ea74373db.json and https://artists.proofprofile.net/proofs/artist/5e37ddff-1ed2-439d-9c52-1f1ea74373db.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 0x4522fda695e0acd6e57376da1cd7108fbd8c266816553ab6055bc4e0eac19e5b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ARC572004391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ffaf9395366fece835448edcba59877767adfcde131cd81e6e124447c4b6b7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNWZ2158581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe383eb9f30db88497312a6b04e75f52700f80baf6e07547d18343c154644deed. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZMEP2221967.
No Se Va (Cover/Grupo Reactor -Pipazo Cumbiero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c666ed45f09a941291dc498a56d3a19edbc895bd4dc4d4e68cd7300533cc4f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA82335409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883ee0e1c658694b9d3eba5decb0ead860f8cbe949808bd43f04d1132b7f918f. 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/QZTAW2358444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f07475ab62b613d2d791615f86c2f9030356231fcf822d896418d8265b61fd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTB22363753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ca1132f7e30e017ae1955bb527cab249c4906ae01fbc647c5ecdc6a9ec90a7. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZDA42457007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d879a0e8d1690647022ef3c4ed1fa3f948a50d9c333425972cbe9f0f5af3bb. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA42457011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7e40bcdb9e3d56f07395aa658a20ab0f1226c7f3b232d8b7c76d68a8a37b30. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWFQ2400246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f165dd00651439e03df26130d544a5c2486a27949e70cf646deccfbe70d8ca0. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZES52501727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55ce85f9f9101a5a0e2dfb016956d631a28fa37d67d393f2dda99c8199402c0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTB92596893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06310ee0ec5ffbf02460d582eaf356e10400e13c1e25b4f224298d921710e17. 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/QZNWS2409962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9075e5467e80af22ee86df7e80307897580ae14097c5edf718d3e0dbdd440d54. 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/QZNWS2409972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3302fd14c3a0a6717c58cfdc89dffbd7ba69f59ae70c750bbbb45e73600e1f. 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/USANG2494873.