Mecano was a Spanish pop band formed in 1981 and active until 1992. Mecano became one of the most successful Spanish pop bands of all time. The band is still the best-selling Spanish band, with over 2
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 0xed321909428921cfa93a7875602d651703a00f1320d40397a0899c7eda21a3ad. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f3093cb-bbf9-4a89-b77c-c6fe928a9d1b.json and https://artists.proofprofile.net/proofs/artist/3f3093cb-bbf9-4a89-b77c-c6fe928a9d1b.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 0x9fee208b42db462d70dde8b7d323e9095f1177644aa31620a67ff269cb3de20d. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/NLQ240500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca8cc95d451a11f4bc662bdc9892b5558d376f341dd5d4e660086f93be52d24. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NLQ240500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc44b9f98b0fe71773a71b686b7634be3d74377e6e3ef59a555d205a289b4cc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLQ240700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec6ba34c082c9e77e216966b503fb715da0b5520c72d27a93867c06038f4c81. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QM2PV1726290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2655f2fadd46555df2743f25d938d2bc053d099e2447a8d2b065165027197eb3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM2PV1726291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0577a4a50180b00b2edaa898f0a594157e5cf776fc6c4c67f49288937c471433. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM2PV1726292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2059e359e7a87841d11eeb0e91c3dc64286634c2fa55bb221c00214fe2a9ab3. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QM2PV1726293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a96574b10ef6e013979e940dc4bb9f8f1b1f0feee977ad34bfc451ad1075c7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM2PV1726295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d5612261fbf31b005ca2b46c6d2be6adbc9c03192bfa406f76fc8c59390201. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM2PV1726299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403b9c63577e857768775fc65fda2a4ebd8e2c2361f45db4353c4eee1673b62e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM2PV1726300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50192a7ac14def228d55695fb9f8dfef886f7578d090f7a49ed0f2cb3046271. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/UST8K1659586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75045cc26ffc3e9501493889e6e95cd3624941a17b18006cbfcdbd513a2a538. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/UST8K1659587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ba1c63c3c5c5fa853308869d3654102a77ee74916f6e9fb6862ecadcf4b836. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UST8K1659588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fd184344c80aa27b732c862a26e8c710c507f9a75f414f5bbc686d99d5bce9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UST8K1659589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957581682e5f78ac88288a14e678ac383b6441f4f98263af5688ce6e6ba7008a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UST8K1659590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8ee5df02c0d4dd1725e3a38b2d42a11906b63be637bd16f8e722ed78f23e84. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UST8K1659591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4bf1bc4c1a56b08707cdf3218463846c68f304d5ab00458f7fda2fe166c399. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/UST8K1659592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3662dd0c04994be055b23e2ea9bd4050c7eb3f4260871bd1dfa7a96514aede6b. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/UST8K1659593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53adff2f2cbcd19219ac585063c5412908de4cac27965d1f914c00a32cf909a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/UST8K1659594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6415191dd3792eae3394e63a5516cf16d5922d4f4f92227badfdb5868f2b12d5. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/UST8K1659595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d75a44fced1356b1e4f6f06e9d3d21a876f2e1967f8f0fc9cbdf71fb94c7f5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UST8K1659596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2e69d15ecf59d64eaa336f955b62188777a6b1686cc688df47e0cdba6a1298. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/UST8K1659597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0350b4f3be17c594d612d7002ced706a74ffcedbb8a0385d1b5d4b67c0f0e9e2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UST8K1659600.