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 0xda53fe6e47879b402f14bcc014527e5da6a26bfd5909dc7a2dcec6f6dd0555d1. 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/fa9e67e7-2d32-4049-bc21-a05d64334519.json and https://artists.proofprofile.net/proofs/artist/fa9e67e7-2d32-4049-bc21-a05d64334519.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Vaca Lola Y Otras Canciones Infantiles
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 0xfef67c55df35f117af5773ff7fbb18929ac0f2e9c072e027d355f61b2c282bde. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCADA1708145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baada9a0914f6830c4369d302aa6dc7e16c362c55a64a2d9cc581de0af2fbc3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCADA1708147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2778895d2881f805cde7f473499f2d9ef8bac3094d5cc13c876101d46daa52a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:07:24Z), 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/TCADA1708113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8ff7b46f077f85e1ff32249844c99db774508ef5895a5e2ef18f30e54626fa. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:48:37Z), 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/TCADA1708118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f656bed55427e4af0f6da9a6c67be29318f5813b616acd01a85c9363d7bb90. 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/TCADA1708121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaa848d1f1eb703ff23e3a45dbbfaba936093134a96256ba35094224e16bec7. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:43:53Z), 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/TCADA1708120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933e51adcee48ffc60322a87be2b36008dfe7899f04904ec460eaa249ac677df. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCADA1708122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153527a332264deb8137a479c9c626fb0b639fed6af5e9afa468b135541a6be8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCADA1708124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae0061e14c4f99c900a535d0a7886278366a8ab6ee3345b9963384a32619b60. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:31:04Z), 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/TCADA1708115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba0418df5b0eb87b1af9c165590bb16632a0deea8d0b9047abb192ccb4d8902. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCADA1708117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe205542a702b6f63c1537fdc9b45db276d534fe7e38422b89612a397e030c058. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCADA1708160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03c799c6d91248f8ee513203602c6f430f7c111743924d007af91d5efa20222. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCADA1708161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b8c786616ee6853d36ccbfa76d6adc4a179f6936653e863943479d0fa90955. 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/TCADA1708162.
😀 Tengo Una Vaca Lechera | Mi Vaca Lechera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423973edb013285bb120232a8b8f0c343132818b3d2304cce13a0914c3a192f0. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWDW2308171.