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 0xce0f36a6a7d1bc9a863b5e814db4f74c8d8d3199d7fe152bd2d02958a58e8ba5. 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/19977e42-fff4-46fb-a320-081ce0ded991.json and https://artists.proofprofile.net/proofs/artist/19977e42-fff4-46fb-a320-081ce0ded991.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 0xfbbc01d356a39318adfbba49dba0a43c8fa7577e6b7f8098fe0fc3138a63a7cd. 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/QZFZ32252327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7ec2c985db34249f7e3f5b7f25f1e6a8d3f146cb919db03229c5082d5782ac. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZFZ32252329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3f262a3778a957813da8efd246fd268c31c3f555a1cf966c830c73787b7961. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFZ32252330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675ca1ac8b35fec385605126477dda8e67be09a92bc720065ad2b10688fe077d. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZFZ32252331.
PRESENTACION ESCOLAR DE AGUSFORTNITE2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac9c97242c11e0db1b49d250b9cc3e3589d9482ff2b8082c0c3ac43b2adc534. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN72291554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450eac7594fcce466b30c5ae788ef4d3783c2d36892ba7b48360492ad86c63d0. 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/QZHN72370306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d218e51a90c737451191fdb79eb4f7cfb8a83152b6de606286f283691a5bdc2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTAY2373701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22cd67491153fa9eac16fb729813876c288fe4f16f348b11eae9539713e74cc. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTAY2373702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c2f3be6be2bf7bed5aea612bc476762485b2183a53a5e51434013561950292. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:05:04Z), 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/QZTAY2373703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eae41cf48c1c43b3d3f59b2ecfeac78549f70d0fb4420c931d9346bf7ddde3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTAY2373705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64512371b04be355378b437c5d6ccaba070488dcca02abffd7e7403cd0a47ce. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAY2373706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14d9d60266f6593c461141302e00d02e9cf944b8578bf894f521da02c4e8139. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:08:20Z), 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/QZTAY2373708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003f381faa7e55c7f2d651d6d0927dc46b16185ed45bd45cbfc9497976735032. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZTAY2373709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6975b90ecccbf707c6404520f9e69db504b175dbe0420762241e654dc2886786. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAY2373710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947038aa7f1cf7292821b8e9b30236882a23ccb4b6c761e5d60f7cc96d1cfe59. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZDA72488706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b00fdade3c5e265b9d0dcba4c32875f47e577cddb0e99a0908279d31a610de6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZHN42424141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687f65dccdc411cdba2384d2fb188334fff0872864b6fa8c4dd82d7316650d2b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UYB282411501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebc6f6411d4fe49000d0c6314b4e12ac27a108a578da45b41023697c3ea652a. 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/UYB282411502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3931b960cdf3a75962ded886d7277af6de82a7b3ee3794a05e8920bdce2dfa4f. 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/QZWFE2346436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156dcbaac4a385c8adad2f31e11fb417f59d962fab46c28b80dafc13d76cfa0b. 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/UYB282411503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947038aa7f1cf7292821b8e9b30236882a23ccb4b6c761e5d60f7cc96d1cfe59. 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/QZDA72488706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396e0590f2a99dba1999c7c227625d751c9212e7a4c25fdee9a25fdc4de9f351. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UYB282411504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2505040ecc276d563398698ccab262452b2aecdfb3b3f759fd1ab0f7b2e94b. 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/UYB282411505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91536cea21b34c832f6ea04236412524b49e46dfdf320f2c536bd4f52f6881dd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UYB282411506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9326d21ff0610a418bc39cc28db63a58429c1c80d3fffec20eaebfbac34a6b. 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/UYB282411507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898bca30480bc7c8b232a5ac82b6627bcac660bf26ef7a84bd908a86fae61c8e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UYB282411508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb1a6f0059e8da5c56bd6f9524e0a4381b3f07755afa27868f19df9ba6f7814. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UYB282411509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b00fdade3c5e265b9d0dcba4c32875f47e577cddb0e99a0908279d31a610de6. 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/QZHN42424141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa895204991e1d73066eb02aa45be76742981d4c802b2046e11f3decdb73530ee. 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/UYB282411510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6bcbfe5749514d3a273858560f680dc04a4ef938f2bce23c43777265cab173. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UYB282411511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57ef50cadd89dc381c3362e5c2b01a1127eb34bbc286e526ac6200b15e5ff8c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UYB282411512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ee804a3995ea8e4ef40032d3023eba3c146ddc83817de27c130c363395b47f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZWFM2454140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3346ecc4abd928c81d56fcec2b5fa4381689a7f910965f61ec32ff3b7f7881f8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6P2553546.