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 0x94d07a3b7efc533fea3faacc4293e743b6a50c117cbbf4a9e907d01e2ac763ee. 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/7fff5e37-5ac2-4da4-b13f-1e5628ae4e1a.json and https://artists.proofprofile.net/proofs/artist/7fff5e37-5ac2-4da4-b13f-1e5628ae4e1a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Aranjuez La 92 (Doble ID) [La Ruta Del Perreo]
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 0x0d443f267825d493c7897717428a64a9c982b25ede2b1bb4edc9ead940882690. 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/COC012237344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c02bed00e8ee89c095161202ea83613f1be265dc2f62c327c09a1c83a6667d9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/COA6W2300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974bad72ac426aaa5a4a22523280d5b0b14212b6b5c55988c9421077c18b4f47. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/COA6W2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815d3e5c46567e14ee79cb43d79ff6851561b10100c4eb9e16b3139d54ed8589. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USWL12302587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ac3b549ab74a09980777d4eeecfd3d52fc062d6dbf05a24617f89524875a8b. 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/QM6P42306073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b73ba99bceaaa59963563611229d78289d2d8ee0c99bcefbdc1c71676905f55. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXF152300380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c198eb87b365ac56eca79bd1342395147434355f557b9520f9305ef43ba758. 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/COA6W2102905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34df1bac50f37642db0aa20a3ccbbfe2db47f6e1c829eb174283d5ed211b0b0f. 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/BK4DA2214029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba3acd1d9b76fd3fa2bf75f05214b3843b1bf294e378dcde4e2d90d4867a602. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZZOPM2239723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c8b7427bc6934ac692e82e5cdb5b3a6522be2fbc2c148977d8cf62eda3116a. 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/ZZOPM2238357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cedf46fcea72f5a9b70604322f917da7b5b52cc6b8ea99f2d4dfd0a23882ee. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXF152200402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307789144a90d2dac0f29629ad821cdbf51225f574c427494a1ddfd5c34e6254. 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/QM6MZ2271834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e1802335cc99cd50c55399004e819abef2e7cc7a69e632df3cf0cbc39f546f. 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/ZZOPM2230882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d94a5019eb2530a2e07dd57fead87bb6bd5dd8eb08a9e88c35f8b537432eda6. 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/QM4TX2232519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0672ac047a81a0be133113dba87834f18b20ce9a31bab451730038a564cb43b. 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/QM4TW2270249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa694ec7f7562e5f5b2ceb2198341db248755fb0bd54e1b7888c6b1858589f80d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/COA6W2102502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03db132aef97172b0685180cc779f0d504d1ebe12390dddf708ea44d066e6a58. 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/ESA011571875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a1991fafd689b1433ec7a2389ec4c68d64931720fa54f1d85faf0315e91ee0. 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/ESA011557638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8d0c2291188c8e8e07a66fb8cfb486a122ac9740424fb587f829d2a64190f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESA011551450.