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 0x5c6e340dece8e3d30d29c1b5ddd49f3767b3d3dc91449c815e704bbe842b9738. 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/47b2bdda-9137-47bc-a825-f43da5cca6bc.json and https://artists.proofprofile.net/proofs/artist/47b2bdda-9137-47bc-a825-f43da5cca6bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cuatro Bodas Y Un Funeral - Love Is All Around
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 0xe4c58e7e893d2b160f0bba7b6d7ffa88888cfbc03782830c20d7ffeb6cfe10ec. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ES5530907379.
El Puente Sobre El Rio Kwai - River Kwai March
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7dfc1e0b19354bf205d33974ef7a9ca8ca7091cf672a7ef5bd487e3d1351d7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES5530912237.
Memorias De Africa - Concierto De Clarinete Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6e49c6009dc1fd01f4cff8af9f80bbe1f7014acd01cccfb69e15208704831c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES5530907359.
Cowboy De Medianoche - Everybody'S Talking
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3115b095f3f93452868bce121f7d4e7afbf0df4a39362c2f4f093d5cbd1c16b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/ES5530912239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e930ea8e15d0dd21dd4b0966868f817d418d21d2f2352c230424537cd950d2. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/ES5530912243.
Una Proposicion Indecente - Tema Central
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbde1263b2a1b0fb7d4e9d6262a890fa587617d5611c9dd4c9d2bb3ecee43cd. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ES5530911389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5383c7def142ec4bb6536ee9da9be13dd2a5f753b2ee1853ea0ab15972418c9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ES5530912256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c451a29c09917a8db2bc87ec399e483eea790116723da01083fb6a3e8c0b47. 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/ES5530911983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d179f6c8d5d5416cc93c2779800834bb5bce0e69d49081d463ccb8c7cc6495. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/ES5530911353.
Superdetective En Hollywood - Tema Central
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abf4300f08ddff6c6883883973c55e7b9f68011756d789f8374684791dc4d46. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES5530911363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a3fe386fb78bdada501839ec0d4bd1f8bf688097a5b33ee2b7e75e19c3b872. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USA371162914.
La Vita Es Bella (De "La Vida Es Bella")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccba06c37c3dc9c2cad1c9569134017aae55c08fe200dd7a23e65a552ebcacf. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ES5530907378.
You Got a Friend in Me (From "Toy Story")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580d3abe6e0aa929820d0c180dfa9cd678e71c97d0b7ca90f07b1bd440b4f77f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ES5531224565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa264eedbf4fda28c149208c195bec89f3fc20f94a892890b31aa72644373f4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ES5531101043.
The Cider House Rules (De "Las Reglas de la Casa de la Sidra")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e6b58f182a45ac71250ae94dd60aa6335923fdbcf1bb5f544c4fe4b971de9a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/ES5531230014.
The Magnificent Seven (De "Los 7 Magníficos")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f71a491b2deb4fdbd0d35daf59ea93af1f68f3261ae1fad7b0672ebc76d3e6. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/CAM460408817.
If You Could Read My Mind (From "Stars On 54")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf326384eddced164504a7edb9b527f3f41b82ad87d699dfd4eada6d155562692. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/CAM460401281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a65605ef85b0a897055e5ec338028ab48cda02a925620c61cebd08a6ec91d72. 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/QMVRR1101467.