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 0xa374891423a90f3b120c6ad1509939984214cd16e88ba338fb8532ba8f5018e3. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cb79032-c682-422f-9c6f-dc7961e51335.json and https://artists.proofprofile.net/proofs/artist/7cb79032-c682-422f-9c6f-dc7961e51335.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caf0c781c76f89737e8aa1dd0f98b9d2ecd1cf41bd4afa4a0b3c72bdddd640c. 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/ESA081800292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20409cd9eb6e0b1f73ac439a253a5b8046b3b9573087c7163e85dae3057c5e7d. 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/ESA081800294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b222eb64ee435b5cd9d3661eb3e4f156491cae746b5ccbf36dfce8a2eba253. 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/ESA081800297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791dc91133036bb2bb6af78c0222c268cfe126f7ae1a2f3922fc5926b79a3ded. 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/ESA081800298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a8ca0e9f615999f42d9b04cba53390024e0fa546d983d458273f1a0b74df9e. 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/ESA081800302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b9f0d807c761d084b51bd3c8b67544c78615e97b235c63949b345a98221abb. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ESA081800291.
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 0x2e0ea2e6f56bb6134f67c79de4377c848dcdf25567de82389e9af40e556c077f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ESA081800299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9702f55b9a0d97f135dde291e412c5cafb7de79c861abdd63d1c806e2d13b708. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ESA081800303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4bcaa5fc3ddd65e3393543271413e0f475221163a797ca3e65ecd66b449de3. 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/ES6291200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed6a0ce409c7c7ab43e641347e1b9a8a0a3f777b0149003f45d62a62821328e. 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/ES6291200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429b33c289752bd4a0ae5f418222f34dbcf53c676305c94714976edebd6da32a. 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/ES6291200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09b93d8aa29762fdc39663e920d2fd69d9f09dc51a3e33c1dbafe676141abb3. 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/ES5592300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a8a157f8293dc55f561c8d77ec76b926b86464f93b89b564a6b64d65ed6aad. 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/ESA061590379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a04471a74c10189f348fa2e62f6cb074768af036d63604b10e2a2c3e290f74e. 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/ESA061590380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf603c196f9f628d47da920a075230f4ba49a33070aaa98bc2664bbbe2aeb6ce. 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/ESA060890092.
Sabor Español - Spanish Flavour: Piano Flamenco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69331d4fbc44236b17e44fd5660ed0546617b8e78e5d9477abe007fe96fc504. 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/ES15S1410063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0efb2b5ec48c8b25c9971761c305eb067b673cb27eaf93c9cfb23de5effa3b2. 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/ES15S1410065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafde93ec0d582adf374bf5444367eeb725d14bb1ab88d72d98a5cf25c8fcc4a7. 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/ES15S1410066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6647bd5665bbbf630de8d7df548f8b5e28b23a4d2f8787c4363388cde186593d. 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/ES15S1410070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0892ce66bf70226bf2d38d980655e83787bdb2f9715bd93b3481458423a12b30. 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/ES15S1410071.
Sabor Español - Spanish Flavour - Flamenco Fusión
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf986c34a25998bcef7733fddc2355dbc933f46b4a3b50d8aff90757156b61d. 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/ESA082050494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9871df834b69955561e122abc9b5985a24d7c8f735a9b5d91ad2b8ad0618eea. 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/ESA082050495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57738bebc96b79274938b88e6aa9989718652efe971c8936b16e371ea7b9931. 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/ESA082050496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9c877f69e0d0cd448f997273c0d0ac77af1f994b013812691c8cc519efc6b4. 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/ESA082050497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92177babf0cf74872e8b31b62fc11e072f8d1ef362c7d3b13d8c54c5a75e0189. 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/ESA082050501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddd982e2e5e21c554a99112d1e16783aba5f0a490f6e63d03e7343f48242028. 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/ESA082050503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432cf48dc3011978913b8ca865822d9c02f68589f7c6f564fe08f31696063a8d. 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/ESA082050506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c8f3d4f90837b5bb7c1917a2035854a1d35f93bf6aaeff4649adf41e767c61. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ESA082050500.
Sabor Español - Spanish Flavour - Latino
J. S. Bach, Semionov, Janacek, Ganzer, Kusyakov, Saldicco, Zubitsky, Hermosa: SILHOUETTEN (Music for Accordion Solo)