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 0x93a2869d0fbd1e5ad775067295e5f3f1120781f68537facc24bae101d11ab7ad. 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/074d840f-5c0b-477c-8376-638a4792f44c.json and https://artists.proofprofile.net/proofs/artist/074d840f-5c0b-477c-8376-638a4792f44c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mañana (Cronica de las Cosas Que Ahora Me Valen V3Rga)
Calma (Canciones Que Escribí Mientras Lloraba Por Mi Abuelo)
Algo me lastima (momentos que no tendré contigo)
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 0x62124af4a09c414112dbae419e9f50bbdc31fc1097adbf2c344900dd9486d248. 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/AEA3A2341695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acca3b6584c7a0e485e7b8f02c9c885dbd641b8b67aa343ceaa579a07edcd34. 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/GXD7V2568668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e28ac3ca70a11fa41e221041d1356d009975efc65ec23bd2a5631d9fe7ab88. 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/GXD7V2556269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62124af4a09c414112dbae419e9f50bbdc31fc1097adbf2c344900dd9486d248. 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/AEA3A2341695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3536078d3cd6dec59fc8bd999818c37fd5185f0164252498669500b70b54d68. 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/GXD7V2534395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7397cf24711b3b9188bf59bf74475e8bdca31a7f7b7b9756f45d0c34fa33ec33. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:54:38Z), 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/GXD7V2588328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090d8256fd61a705337928a27fd24c0ad7f4fb920fa264f1e25035e4194d1053. 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/GXD7V2516171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19c9adabb11482c38dac54a12715261ecc896565a417f51a76116355533dad3. 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/GXD7V2530341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1afec9d305214d6f0cac459cf5e4b7539883a38a66f7a5e935553d92b7748e. 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/GXD7V2545053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ad24d72ead1ae7c58791db4b4aec45536a30d8a20ac276f076cee9bfbc9e02. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AEA3A2198050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692490863714606398fba6be170b2c0bcd4e47667527bfd4a3bc05eea435845e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QT5M42539032.