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 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 0x359b0708610450e1bd4ccfc56762616615f51e29a6c289cd1ce53688a3bb8545. 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/da35223a-876f-4eb5-9140-bbf375ddf078.json and https://artists.proofprofile.net/proofs/artist/da35223a-876f-4eb5-9140-bbf375ddf078.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 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 0x8374b6a49f20bdc7c3a3d380bba63f83501547c448d9b76c13bf3ad93c42fedb. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/USASN1800243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d8f6d5e917047a286697151c33431e7fddef681440407a363bf9ce2c1c38fe. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USASN1800241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748fa38885c8af1b294a053d7160bd9c3bc1ba02bd7d6785b2216d22b2c4c27d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USASN1800248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47282669515a3592266eec60aa19165cb99df6e7f4b6aab500ca2b74555e3297. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USASN1800246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dcda7c91c7a1d9d21abbedcf1ceebe1bfb29a16612115d594e8a0fdf9444c0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZDQH2143397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7679439978cc6801653ef0d69fa06122d16e8153f6205e67f5680bd036ee6e94. 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/QZDQH2143398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43038da7e6f902f290e358e4d7a9c648d8be60a463c5b1d3f27dadeec3fc8daf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDQH2143399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411669cf50f00bb17d4794eddfd4df50f59eb124e13ecee7d22f9c6747b100f8. 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/QZDQH2143400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a68231ef91791b28fdebfa968581ae1ecf3c2206966d50e1908188d3c907c3. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZDQH2143401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6930af12598e4c827f6b7545f7ae73bb1e5135c1da68a3ec10ab47c0bbd9ae8. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZGLM2254054.
Popurri Pa Que Son Pasiones / Amor Ala Lijera (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f11beb60e3989978538049982e667cde6baad9b07f446cf4ddc6f4e8aa82a0. 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/QZDQH2384839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6162941977f441c4efde08341bc9b8f33d42b69e4ea72f421e9139ef6d6f36f0. 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/QZ5AB2495084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072a8e8aade8c716b61967a69d99684c4066c4fba928909b5a3a9e679dbb126b. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZDQH2411443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee94f4ad7119f62a3e0463c7a8d6e2c883a5517c8efd919b17007443eabe565d. 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/QZDQH2429961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593cdba123927e9f7aece7fed6681e0aba98ac5211be2c5d194de76a0d1606c0. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/QZDQH2435297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b8a309770b9be3f1ddced62183e5015c3b167f3ca006a059adc66fb8856132. 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/QZDQH2438375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ff57bab8a47536b2c2751d1bd17d0ea659cb7ac67e397518978f6f2a7a865b. 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/QZDQH2501192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c24d5ff3f34e96898a9e1ba452c0b2c5185483f3fa7a820d82d7dec2418093d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZDQH2517769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94574b7653544bd1d2e85ae21a91a94933789eb82efa68a88a13f7889cf3258. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QZDQH2534753.