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 0x78208e01c69a20eb69b1438fbc9165fd8b5cbdec09f3c7bcd7c6cb08d31d60d8. 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/7329a86f-0f14-4106-bfa0-cca02b961ea2.json and https://artists.proofprofile.net/proofs/artist/7329a86f-0f14-4106-bfa0-cca02b961ea2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Un Ancho de Espada (Este No Lo Mata Nadie)
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 0xa6157473cef9c1b5478bb9f5b6e73134c0bec061cea14e6931c16dab600ab696. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZGLM2104535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34612269b882979b7e1e1ad834519ca79d2929c89bd17d1ec299d68ce9914926. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZGLM2104539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79be218577a5cec52dc1100579b3ec8c212144a25e4bdb8740a4b5b68d4a700f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:23:58Z), 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/QZGLM2104531.
MARIO PEREYRA / Zapada EN VIVO en UN POCO DE RUIDO!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf40f6648cf0fa281577df2d6a9a418fa11074c8ffb01077b2f57e17eacf016. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR5UH2400570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd326bd2c1b6f5f4c6bf0de1f1d0702df7b4e357d3a2453b3a477a2f94a4f7769. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR5UH2400571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5478f4e75ec3c4a8296be4f42b4727965824feb7d27cfff0bcc7e39abe02bbf. 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/AR5UH2400572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ef1cb1a3f169fbb6d9a5149bfd2c949f7ebff2c9b2adad7358202395f3d289. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR5UH2400573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe56079d88da5dc309cbda00e2808943c649d245238d1ccb0c490081a3a73c12. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR5UH2400574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fa06e5892b2ba6ae722e44091095a653646d780ab8b204d316dd63a832dc5d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR5UH2400575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8dc9d594576318f167c45ee2bada7ceb89a4c095c078fdc7ee8ff75cddb5d8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR5UH2400576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698642bd1ada8c27cce067efdf6facd1538c4c5441f2c399855150a517959c81. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR5UH2400577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b81391a0ac4031d2a6783545173d4c16a388963dc79e4fa6f49a1efe11bf29. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR5UH2400578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501fcee434b6f66094fec9d166021c0ebbbe66cbd3931314bba99c2edccefb06. 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/AR5UH2400579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379d814c1e4cce2f67d61bb4a2914462e1e752e084db9907af743fb76a94105e. 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/AR5UH2400580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314b6d44924a3431eeb4f4b24edfce55c9026ad8c72cc75062b67a48117b6e3e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AR5UH2400581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5950ccc10a32caa234459247702f11ca8585b0730015df4495817ef907c48d12. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR5UH2400582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edaa2ed5a2e937d83196dad6d0b7c64fd407af51ad4d7db344b58c1c479e200. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AR5UH2400583.