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 0x67cf8467b66919c09238de43816359e0bc9a6d3f321994eea88225ce7112e9a5. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13d4f79a-d690-4145-a174-a8f141fb656a.json and https://artists.proofprofile.net/proofs/artist/13d4f79a-d690-4145-a174-a8f141fb656a.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 0xdf2dc3abf3916856d481931749199cd7ae8ea294ac37fc1f785aacb4d273fc60. 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/BEC999737203.
Euridice, Scena I: Ninfe che i bei crin d'oro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fabe1a55dd619d79bc85737940ba9ac111efb6dafc925d31e71154dd86722e. 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/BEC999737204.
Euridice, Scena I: Per quel vago boschetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fd76916861f2506ea2f58e447f572fd24471ed33c45a873883dbbf803a4076. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/BEC999737210.
Euridice, Scena I: Sinfonia a 4 - S'Appennin nevoso il tergo - Sinfonia a 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3718eab449b784089c8c6d49786f0992981c87a5db52fe06dfd21ec9d8c7097. 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/BEC999737212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91584748ae551973c2fda439a0d266cfe2618f2173366e0e079edd91c774766d. 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/BEC999737302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100d40073c518d63e1f2c4c556c479b389cd23b41ab41003421d93405e9be696. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:25:27Z), 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/BEC999737201.
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
Euridice, Prologo - La Tragedia: Io che d'alti sospir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad223b850dc8232da91d82223d65ee1293dc1874d3b80e97955d2e3109bd17a. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/BEC999737202.
Euridice, Scena I: Donne ch'ai miei lamenti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79414b8a25b5e69e6381a2fb0207304765db917a0eb778fecf7122db9769e66. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BEC999737205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cb1d122b5f5ef8df8d535352a3a00b8ab9504789a5c6f5f8b20542770fe2f1. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/BEC999737206.
Euridice, Scena I: Antri ch'ai miei lamenti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeba59fb674e30baf086a4181ee81cdc47f2ee31f6cfdf1bc7ffcfcf574ae739. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/BEC999737207.
Euridice, Scena I: Nel pur ardor de la più bella stella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa855da6ad9d53fd2d94eaa9090a2bf568c4b5348ca6c2425a908e0df48a0f57e. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BEC999737208.
Euridice, Scena I: Lassa che di spavento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c713a3fc4d5ed33b00b228f87a65d55a1a0b504c37ae54ac7f76b4ac788ace. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BEC999737209.