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 0x0393766279de98a9330ef1a75db892605e7fe0f6812c86aaafdd67e687b0b48b. 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/27a11acc-470b-47b9-8608-b0710ac83fe7.json and https://artists.proofprofile.net/proofs/artist/27a11acc-470b-47b9-8608-b0710ac83fe7.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 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 0xe168d508c16e74d7f56f8ec7065ff6babbb6030187dcf8226b67c5bcde299764. 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/ITI020700096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cf9f63f91c4cfb7a571be8697a2fdd4684b472dfd940a989d1324ac1adad83. 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/ITI021700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056e1dd944f579a352da90073a6bac43e49e1d8b448c7fd280bf112405dce9e9. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ITI022300168.
Italian Restaurant Lounge Music (The best Italian Songs to relax for your lunch or dinner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddd065a093e53da73aca2b4fd4517ee15a1b603921af87b340d06265e1f82b6. 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/ITI020700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cf9f63f91c4cfb7a571be8697a2fdd4684b472dfd940a989d1324ac1adad83. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/ITI021700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000946705ad4b4c1373a31ec46017ddc8920fb5d12e368212d1c7c674ea30b65. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ITI021700010.
50 Italian Standards (Le più belle canzoni italiane in versione chillout)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddd065a093e53da73aca2b4fd4517ee15a1b603921af87b340d06265e1f82b6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITI020700103.
Il caffè italiano: Milano (Italian Lounge Espresso Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe034465702d11174ed02274003d8154ec6a4bdd94feb10b002e1017a3ca4ff75. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITI020700093.
Italian Lounge, Vol. 4 (Beautiful Italian Songs in a Chilly Sauce)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34131d52a4d4e946704ce596099f089e9b6dac92dcbcafdf04c94dc01ec24bc1. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ITI021700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cf9f63f91c4cfb7a571be8697a2fdd4684b472dfd940a989d1324ac1adad83. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/ITI021700004.
Il caffè italiano: Bologna (Italian Lounge Espresso Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe034465702d11174ed02274003d8154ec6a4bdd94feb10b002e1017a3ca4ff75. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/ITI020700093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b5a698934606e676a0310db5c525181516db9454f823b3a10213038c196589. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/ITI020700098.
Bossa Italiana Vol.3 (Italian Songs In a Brazilian flavour)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a06bf5dcbee4c65796900297ad9b38e4362fde5e5cafb47efbe80abee755052. 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/ITI020700097.
The Wine Lounge Selection, Vol. 2 (Cocktail and Chillout Fashion Bar Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe034465702d11174ed02274003d8154ec6a4bdd94feb10b002e1017a3ca4ff75. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ITI020700093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cad9dac26e22b3a87fe67e68562af144ef7eb1ff48a2f0dca20fc9453f36f82. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ITI021100013.