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 0x9f6b27c6ba793629b4a3560204fe5d699ca1b618292c066974cf0d061a05a915. 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/f39d7d45-cccf-49b3-9f01-6b35a7ed2936.json and https://artists.proofprofile.net/proofs/artist/f39d7d45-cccf-49b3-9f01-6b35a7ed2936.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 0x75fb32abe16afdd0ec3d6dc61817f90fa46e21bc1c8d408c99beb212b155dd4e. 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/DGA052345987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2a37023921fa77c3783f2af7139af01ecb821e050c9a02e17d94473f99bae8. 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/DGA052345988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a6a73c1af78aa889f78b23b729b5bd6592b96ac839e100878833a1406ad518. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA052345989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a0b739fd39678167544c84d19b9626ff5f5b32e86b9929bbe2dbd6c5d4d270. 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/DGA052345990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa629368304e0606274f20013f33a5a03f0a2b26bf72e30955f3cbb2c8fed63. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA052345991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729f1f2bbdb8ac427473d82cc3e58d85159d0ec820f760eb4570eb8a58382e4a. 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/DGA052345992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5f95c43008b8f0d536291f13e23818267f9555cf1d8b653d4033a3040361cf. 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/DGA052345993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78c5eeab3a40a1d9f3987c36cd80627e10ca433431194bd7e17ac93b72dbcde. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA052345995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42011204e916b7d59cb6728db9f48cad66e677308098dd59ec2750de4587e95. 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/FRX282141874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319612b53b19bc3be2fc787ad53a2461f730d4d798c4b6f3af8cc35533dd0484. 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/FRX282141875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5814872e86083fe819a4a89f4e5bd5fbb0275442a7de3578e2935431d56f7be9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX282141876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74039a792e23a15bff8578a51b2a75667a0e312a6cc42de1ab153729e7780a3e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX282141877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c1f705084e9ffb35f32bc4111f4e61a0bca14d1d4c224f272ca90fb8fb7a4d. 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/FRX282141878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1a8eaf3210c7e93e97fd68c8d8433d116fda09cadfd75adb83f5b16eb2d442. 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/FRX282141879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ea1c685effb777eda99d24be182f2b6efe2436deb565f878460b416c187f7e. 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/FRX282141880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a9d7676fd7874cb0789d7b891120d5cdcd3110bb0f2123ce44741106acc39b. 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/TCAIM2471632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a268f51c619af8e5537d9356e491966dd00ea7fa537b07403abbb0830d60a0a. 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/TCAIL2471795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c52c14bdc366e93d598e601f2ba2fc1868ef2155433388475edc1f8dca28c5e. 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/SE6TI2075608.