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 0xb66f109a0259931057c369affeef2d18484cadad3aedb126a1b6f0eab6b7f44e. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f6f9fd2-83f1-4aac-a592-97ca838715f5.json and https://artists.proofprofile.net/proofs/artist/4f6f9fd2-83f1-4aac-a592-97ca838715f5.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 0xc2e5e819587743e35a77f5277032243a2d04fd779156eab47bffb22978c3b077. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6F2469757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0175cccfa83e3c09dd46c32c52988bb71b1744537bdc70380c425ed9a7ca0976. 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/QZNWT2495964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b842e8f14364234320ef3c602d1c06160cb3a8b69304fb73f7645114e428d99. 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/QZNWT2495965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7be7e43d88295f921e42e0563a1e5264e0ee55136d0d3e34e02c6201b2d284. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:35Z), 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/QZNWT2495967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5ef4097585804d94a7223f6fc69d2a86657fc349a9304f5383b946368600de. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNWT2495968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee126e65935640aa8b259024465797c6ddc19ca6f5e164bd15fe36b9296bd00. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWT2495969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0438b6e3e405a56ba15b47db25c04eccd6a0605161b9d63dc92d5a8edc370c8d. 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/QZNWT2495970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d54e0c69f9b621c52c2cb9dc38a6321498d585be2799f49cb72c5ad5b8a0ce. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZNWT2495971.
ES MI RECETA Y PUNTO - VERSION EL BORRADOR
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23119157045be86aacf86d573349bbb4d356ca948e8f28d9b62c73aa47a9d942. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFQ2436051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16869dffa01ca5fc0c33d39f38753107e01e5a94907b0f43b3b1c3600172080. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZWFQ2436052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b7d89481bd67efc9efc52a0ed92c3eee0e20a2eda2595f4c9b9084b0570858. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFQ2436053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa4ecaf6ca453b3b4bc09df9dd761acf7da0cafcb5022e88f818c193c66d428. 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/QZWFQ2436054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb503e75a1b248e6f715ab1b31179e8346ad6c1e2da25c5afdb652eca46504e4a. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZWFQ2436055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740a7a170811df6418141dc9e228142d08c53be9ca974fa7b1890e0f81d56986. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFQ2436056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c886047fb02b7026a85ce6bea35ddcf300d0507f64e84a2a30a763a140a69b3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFQ2436057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191144df4d9575900c5e7a059057d2c1cb436bf0032ed940bcc6c31411dd4371. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZWFQ2436058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277ac75857577fb836999c5c0d12f882f6f2c7cb6879030aea23c7ca3de64771. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZWFQ2436059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c051bc1694eeb238310e94800597b75339860c568363bb644b5cd158cf8ec8d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:59:09Z), 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/QZWFQ2436060.