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 0xc7e5ea22f7cdacf441ba23140f795a16dd39d4778f3bc3c80d0419ddfa37e564. 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/7e1f0529-0b24-49bd-90bf-0c58821c5be1.json and https://artists.proofprofile.net/proofs/artist/7e1f0529-0b24-49bd-90bf-0c58821c5be1.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 0x07672c9478285f6c8844f2c91ca98679240c7971a31f99f9e30f2a100f52bdc3. 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/TCAEP1900589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acbe02164088a1e07a1bf80b668e1a9d96adf3276591d82fef42a15dbf4db6a. 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/QZTAW2222610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c835c4f6dd725b8b6ef0cbd37173b3bcaac46b51e9133802cbe785f79ed2dfd. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:25:28Z), 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/QZFYZ2387869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dec1e26324808ee6c6fc7e8251413041107756544040c17ddc9081b0ec06103. 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/QZES92325901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0f9a7a8e3e810385a881ce95a275f03d029ba497b8cfc90fdb1d878660a5b9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZPLR2316001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e03b6bc21418dd45a6fd4df96d0b5860a9083a7683cb9d5aab93d632744d84. 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/QZWFP2301923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07deb6a56e187b64f9470d860ddcec2c3c300699f052f27b7e7b0c47b3211359. 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/ITIRH2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14b2a0ab9f5175379df59762085c8662d75456a845798545f389fc8273357b4. 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/ITIRH2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236c265a0f0021074542dae5a5d4da7df2957b7b8cefe2d98d6efcf4cf2a4bd3. 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/ITIRH2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb707d691262146026328f2c39961a02b1f3302d05a188d49334085aa0e51e3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITIRH2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba0853805f9842d04a7037739e53ae3090d4117fdfcc56ed227ca99b5fb8d3a. 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/ITIRH2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d48ec7a45087549abe09cf6df0df0e8e1c448efea502e3e98080c2916599c9. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:02:47Z), 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/ITIRH2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b30ca346ca61b315e29e0d501c405673cfebe04b23a25fb13a504d4287ae59. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITIRH2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4b9761600b46deb56ad108025d113b380d58923a9ecfb20818bf99e3a20d49. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZTBA2421141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6ca0f04e80d9c693c5d0f80edd400dae22f7c46eaced502e1e27c912ce92f3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ITMDU2400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a968be71c2ccb483606610e28aa99ce3c205d8b815477643fe484718693cd9e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ITMDU2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4d5dbb141630ce30ca6f7deae06824b6ea802c3f5ff2176127beae60b4731e. 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/ITYKP2300030.
Contatto Romano (feat. Manali & Mescal Dom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97a70c86e6c8751d239545b8de11598c878885c3ea7f907aff07004d68a44f1. 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/ITYKP2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068648b3f67869768c9cf5e23a387ebfcf0afef08e10d885ed7d33e42431643b. 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/ITYKP2400021.