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 0x575b4bd31b5dc484058cc4578db9aea5322bf155816086c701d3e95cf9a5acf4. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/228ef650-38ec-4bdc-956b-c2b693b0d345.json and https://artists.proofprofile.net/proofs/artist/228ef650-38ec-4bdc-956b-c2b693b0d345.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Los Heroes Están Cansados - Maqueta 1982
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 0x551fb9c4a3ff2ce622d020598826b2417cccb52f52a37ffed5c5ab9c4f9d7e14. 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/ES5610122201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eca10f7a8435306749b6804343e9f137549c42a979a44c00320681cb62d81c9. 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/ES5610122202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b72a55acc502a61c19ebbb23b7ea116235c8b676240ee61405dd2b94eec4ce5. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES5610122203.
Generación Negativa - Directo Burjasot 1983
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2881958923411924c59f142a08016dde11f9361a3687e0beab0779824b6eaa3. 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/ES5610122205.
Inadaptado Social - Directo Burjasot 1983
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f86daf7e636f291b2c72d166f8e8991c394630bef9affff1016519016c71321. 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/ES5610122206.
Felices Días en Auschwitz - Directo Burjasot 1983
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aab2a0810669839dfbc52489e4ea660c94422b02b346c45acdb31bffbd0ae4a. 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/ES5610122207.
1984. el Fin del Mundo Ya Está Aquí - Directo Burjasot 1983
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84859423f0789b88a9e9854057490c519c1f1aee1127d61f31e2ab39e6a4c4c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ES5610122208.
Problemas de Estado - Directo Burjasot 1983
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee16bb3b89859487fb44576036482e477a3384f09553b6c47acb7bdf6a3b92b. 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/ES5610122209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd396a3c9fe18d0a9fed25ed920ea2c0391eadbf54bc748c222b99244dee24ca0. 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/ES5610122210.
Adiós, Lili Marleen - Directo la Eliana 1983
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0bb5ce51e0b643f21d331ac178f3e8fb53d0e31ac00891c0c56bd454e45f16. 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/ES5610122214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251cef8724b8aa2847676251b2b01170751291aed088ad42e2cd02643647c8df. 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/ES5610122218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6615471cb8342f7ae5dc00bc9733df132f9c54c31e8659f746ee0c2c8a884db3. 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/ES5618522901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80521e7e1f7fb980936ccc4894a609357ff0488282a6a925cac0a3e2286fa44. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/ES5618522902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01c76759d9da5e2eb058a00c84ad6bb57e03dda6c9066b04976ac33ae2cb51f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5618522903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb12e8adfaa5ae134dfd38fa388b749576f32621f6aa2c7d7161bd61cdd87d53. 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/ES5618522904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fd3b791f653a82bbed526ce726c48bcf64ec8e6aa01dbb3a82b9d8905d61f5. 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/ES5618522905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44989f0c7d83cf3f1e13e0b6751c94338da3733dfe5e9402cb75d97ed00c4692. 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/ES5618522906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab74d2f6ddc65702235c61d137304f6839d047cbbca5766424450cf06104ac4a. 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/ES5618522907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be10471fa7f55ced427872f80805806505578b62f0792a19f4b6890ca807758. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5618522908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a959eeb5159a64e3db8b91e132ea8b7deb38ae29570e3b0358dfa161180b1cd. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/ES5618522909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8477292c0ff6345920dcf2a2495951e5f199d8cfd896b77e70b5a804854b1922. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/SEYOK1528394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6665f1b4933609a538a555c3059975c7ef80bfe5433105a0713e71eda8597b. 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/SEYOK1528397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9dbaf8af4134d6958d7c058c095bf5f19adf5405bff461b5e7e5cc4dfef310. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/SEYOK1528398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97277d3c9751c5e4218616420c65218dc738a8c7490fa059c21d43ce9fbcfff7. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/SEYOK1528399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d8972f02680713b30e76276a8b18543d2073043ea9d2781af583f7eb078d65. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/SEYOK1528403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d629c3146c11099b4a51877a7ce55aa701eebcfd4346e13b3df2db437ef4a37. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/SEYOK1528405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b67941d70e2b4e8a7553b270afd55686fb17d508780db4e0cc1ee03fdd2ef03. 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/ES31E2501559.
Terrorismo Empresarial - Remasterizado 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdc0b38e14f232d99e75f43ce932f0eb239185ac39079bd7130e95993308526. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/ES31E2501560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc76c4fc98df5dd511cae0728a4b91e983c3327570c6e2cdae4db7ba2e1857b. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES31E2501561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0dd89862e93783bb55b3beec75f95055c2513fcaacccfad601ffd17a48274d. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ES31E2501562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93c15574f0eb21050d2a29a07325c444e5fb5a3084e6700f70667230301bd1b. 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/ES31E2501563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5df2dfe05bbfa06aa104e5a3b0fd310e10c96ff3728a602c57b1e12ff46fbc. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ES31E2501564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebc33dd082745a72e0d3542c780ce0b7d767eb3c10876c64aacace73e280ede. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/ES31E2501565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034c34853eba691aed8cad4f926459f02dd04c454cb2ea033a3250718580cf59. 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/ES31E2501566.
Adiós, Lili Marleen - Remasterizado 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e67c69cb52dac7a0eef6f97f09c1958ebdf55d806c240978c6b93e6f3e9435. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ES31E2501567.
¿Quién Tiene la Razón? - Remasterizado 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2419e46a95f5c4ba72a0b3f009a59178f67dcfeff98b474ce84cc46745e712. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/ES31E2501569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504c38bb5aeb8535d0452cb9f863fb2c115b5a517c0d7fabbb8fa1504e4b4af5. 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/ES31E2501570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e46f8cf1d19294fef81a7734e261e099f78a2768b0e4b516f56831bd63f43ce. 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/ES31E2501571.