Banda de Música de la Cruz Roja de Sevilla
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 0x9f97b9bdd32817d18443f3cc8f8c330818c46fc4deb2d41271a0d6001c892d5e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ac638c0-ccca-452c-b3aa-9303e979de60.json and https://artists.proofprofile.net/proofs/artist/8ac638c0-ccca-452c-b3aa-9303e979de60.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 0xe773744ca0507efc50b91ccc0a4ff2800160477fc8785648636e76c67bb57ef3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:00:39Z), 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/GBSMU3369775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b550917b3e3e863dad80d94ae0cd08e4674fcaf9c7aba2f744f0897d96db3a. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GBSMU3369853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72686bdc4061018548126f6f8f963a7ca2cf6898777a1458eb80a09a08e18cbb. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:59:57Z), 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/GBSMU3369854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4349ebb2a24fe7916cf85e14d6c68993ae8e568914913561753d5c8fcc73688c. 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/GBSMU3369860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5d857fa496f011d5a3389e4748319f02469048e2794b5aa83ea5cfb0986a66. 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/GBSMU3372740.
Marchas Cofradieras de Ayer y Hoy, Vol. 1
Marchas Cofradieras de Ayer y Hoy, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61933cff8bd19e4989dfa42317b271fda8f5ac16934d25815a3126b910d745b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:37:04Z), 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/GBSMU9575101.
Edición Especial para la Hdad. de la Soledad (Alcalá del Río)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa470071fd2ee6fc191e8abde64c5fc60a2f405a55cf3510b99073f068cfb292. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/ES5350702560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0703ff0771463f40809b6ed9ee9192ba2712348dcc48a6930ea73f699530c4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBSMU4597848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61db33c68dd8f248f07fb3765a92ab405161dc6369ec85bff5b8413caea5452. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:52Z), 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/QZDA62408038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7daa987676dadcd9e2415044b43e007785c6db853bfc2d9119e9e8f9bd2bb4a. 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/GBSMU3884617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159802ff26fbdbcfac419854368eb62fd8d822fb5b0dcaabb3565d3f402e979d. 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/GBSMU3884619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4d6fb379d89992cab58f3943e3917cf4b835ced76c490255892f759c852928. 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/GBSMU3274024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004f6f02f047fcbaaf618258997164c25f232d308b1214db490f62553c9e4759. 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/GBSMU3274026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5c78f0a7ba45fc86359737c62f0fc6593a2785a83eb5e4a0bd00df8b0c3dde. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBSMU3274028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d2e6ade98d2d089f1f3baeaac466b27aa81cfe358be6b6accfe0fab8e61688. Chain 2 (Bitcoin): anchored in block 957685 (2026-07-12T09:26:00Z), 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/GBSMU3876343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef005a40054f0153d092a42eb132a4328abfe56cdccb03ddc6108fa96c8a01e. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GBSMU3876344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc522f684e86d2c58f727e0a86c49c822bb40cdadcd10a210baee18e9c6c5bf2. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GBSMU3876346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3755f980f972ee2cafa7dfb82b94ab56e2192e1f9ba76740861688fbc741a3f6. 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/GBSMU3876274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ba116cd5c94349872141bfb6c9d25b917a04af6eba642034cabd6960cdf88d. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/GBSMU3876276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8978994cf84e34f07c5399cfa3175b85649cb4a8b7efc1bc4c96188e0270385f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:52:43Z), 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/GBSMU3876133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee96c85880f5848791f9a52fa2ad66d4bd6d3032fb59b8e171e3ef58d261c9fd. 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/GBSMU3264850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bac0f4389399dbab8e65db4b270e141ca41d9c5812891753975f39f9f019b1. 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/GBSMU6129406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13c33aa4cdf65cd82dd5c8717546a70afa22e0369223004bc834f5cd6ca619f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:41:21Z), 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/GBSMU6129407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e8f4a5c5321a555586b2bf60f53ef2d6ea6b6dabd2d37deb5d9942aeefddff. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:41:07Z), 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/GBSMU6129408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5def50978570b85bd29f28132d5990a8d9abfa85abe5b85f68829517efadbd96. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBSMU6129409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc840822c4c26acafcaff10677f2714e6fdf4a6e5abb1afe4007c7a743fd8df6. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBSMU6129410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40bf40a512b4cf9ad407459dcfe987b8d0d9f65743021cbe7eefd7d7799cb5c. 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/GBSMU6129412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bb81f7c7f69b726520bd2587bdbf17863f8f6a4451d156f8d47e8bf4105a37. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GBSMU6129416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e72f6d2abdc02969fc84cc201220fdd48c737246ce7775cdf1ed6409c4621ac. 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/GX3HH2236768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe615bc23e7942167b1686a7256fd77864e39a61c1edf872c2c62d5b725b1c0. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GX3HH2236771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f4e316d03e02f79558122a32461d3a70ea6664da133470912401d8b7816fd0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:47:04Z), 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/GX3HH2236774.
Bonus track: Paso lento Cruz Roja (Batería)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e1006ee006828046bc0ec30c447d91c37b56f4897fddd71b80c5437a11019f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GX3HH2236778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3affc18213cc84c82f2f79aaa7043f118d6c031930ac4efa57c90938bc737a66. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:16:51Z), 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/GX8KD2351269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31fb6b8f9b1672e773a2d3030ee9fcaf45feb7261568313ab6d16ee685179b5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GX38U2396031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf0085ebfaad6267205c7ebb1d1d8e65cd439102682f62d5cac4e1cd58a1739. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:24:59Z), 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/GX38U2361682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24378f5a1fa10b773caa8ae5a6ca87f7cb1685937592ae3f136d963f925aa555. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:26:57Z), 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/QZDA82469723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803673c1711e8f04a547f6e350f03f268362239a9e905a7861fbc76942a1919e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES82448365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f7dcbab7ad61d023ff332dd0f4e73f7b78ea397af26a233d61a4e6bced28f5. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZPLR2460831.
El Presente (Banda de Música Juvenil de la Cruz Roja de Sevilla)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec5b5f97dfa8610d8554b397a8e8c3fe6d70c155f4386bf1a889ad1d4245d9b. 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/QZHN42528278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dc32a44a726fe2da410f40a7c35bb1eec0390435591eb44a4ce3789214e6b1. 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/QZHNB2513699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814bf1f2a4421c13c7e5b9575ab2fa2330e588f2c508a1289c6b6089b54673b0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZK6J2531023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0419bfcdad9bd812c811a0a41c3b5f5c7699539afd7431f3a64bcb0f7683402c. Chain 2 (Bitcoin): anchored in block 957791 (2026-07-13T02:46:19Z), 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/QT3FB2518891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0878dadba26d6263b96c484072ccfe0ceaf6ec12989f9c7990cf1f6f5ef122. 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/QT3FD2528748.
Marchas de Semana Santa. El Magnificat II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2deda4085995acc5998248cb7ed43901d510fd914e8ad0dcaee8e86bf068a7. 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/ES5351604041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06846a2c262fad49cdc080a50b9dd6cf95e713787014e5cf2b97c34a799e9c22. 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/ES5351604034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da2d764db14f889436d5d25860952f3203982ccc082f20a88a1491932f24b23. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ES5351604017.
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