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 0x8eea57613431836daf1540fd0630d6c36220fec062208c079e1e0d104a3ba9b3. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7a62ad3-39ad-4903-b740-f7804f1dff98.json and https://artists.proofprofile.net/proofs/artist/c7a62ad3-39ad-4903-b740-f7804f1dff98.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Festival de la Fantasía (25 Años Festival de Jerez)
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 0xcc66091232744a3bf01f574037aae7e37ffaa20e0f28d02422d3627c30ab6756. 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/QMARG2150613.
Concierto No. 1 para Guitarra Española y Orquesta
Find Me in Your Dreams (feat. Estrella Morente)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cab19d7dda47d5f4e606de482803080bcb14830c7b38410ad4540efb696128. 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/ES5151503829.
Cómo Apretar los Dientes / Matajare 9 / Otras +
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae9e9d432ac059fe986e52e37fde573b33918a0507a7140aac4f74d3fffb484. 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/ES18C1000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9e03bf944edaf9abdaa8b46cc0feff2fc59071d5622ef957d49206080a80d6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES6291200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf8a10a0a60e7b25411ee91974545ebded70e8859797d0c982b42f91d03ed2b. 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/ES6291200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239c3b7e394d8dfac30929f938ec72313a8eb057faaffed757c353e9f5e378a4. 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/ES7731014001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2266c5020203df6ad9989f8ebc0135a2267b3d4e9c48a1bfe848acffcc7117. 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/ES7731014003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7656a5097a302daa11a987ccfecd01ec49c544378dc7fab3485125f394c93d. 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/ES7731014004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcf2b79bea518d43a93387fd6be909b7e1e1f8bf874fa7418b2dfaccb11c0a4. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ES6291200101.
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 0x61a3930f45090821bedf5be028f0bba0b5a558fd975327e41984e14c7ceacf24. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ES6291200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b9203bab7449e3495a00cfb5cd4a6b5d3487bc534106e1a4c13d7353a5d12d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ES6291200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3939f019dac8a78fcfe8254398cba281f88ff17c1e31e2c295a9bc058c0f434. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ES7731014002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9e9aec1e014846335d33121bf829fdbe04d02f2989141491f760ee9913a482. 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/ES7731014006.