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 0xd112ea6c56bb5ca61b4afa3ecc8d3b8ba98fccb63fed92bd6b9ff0dd9437337f. 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/6060ee9f-7092-4c3e-b89f-02761753bc01.json and https://artists.proofprofile.net/proofs/artist/6060ee9f-7092-4c3e-b89f-02761753bc01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sav It Out, Vol. 2: Street Starz N Block Monstaz
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 0x4c422fbb9be049846a97e934dbc0d0e47c4b5cd2c8652ae0f81209d4e7a76e59. 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/USUYG1004418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b39ea4a69ece228375a2716fa5d25e4344e321fe81c74f0af26dcfbf9b90ef4. 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/USUYG1004419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7840ed65cb24e7e93068f24e4a428af1df474dab81007f63e7897e7b7df6be11. 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/USUYG1004420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06634adb9e2f9db57039fa68c6fb4937356a3ca242b7bcd6d51d9cea79c7c4ff. 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/USUYG1004421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c550b2e4bc11f76a7886e7a6264814b4bd2b99a309992a583f189ab5a9e1d6. 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/USUYG1004423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac24da04358674aaeefcd982e373fe7029ba1042a1791ae4c645dceaf3d2b40. 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/USUYG1004424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665dfe2607379758408556aed9ae39b6e8a676603aaa5a57749d6a69c7dab839. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USUYG1004426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bf0321795d5c9240f861b4d14c322926a7e22c4363fe44594529b6a0a43036. 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/USUYG1004427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba031bf2b4bb4a17b48faec0cee16c392e7db232c59719ec62b55beef66a712. 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/USUYG1004429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfd9d01d118ae37892ac9186791b49b7665d6158755dc776deacb208cffe0f8. 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/USUYG1004433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7124d10f58305d0eda7145c14e3ba48699cad9117d88f1c012d4db01c4863f72. 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/USUYG1050981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93918d40289012fcd8851316b90c1663aadd30b6fa7760c066abbc2fd709c62c. 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/USUYG1050982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0b161f4fbe3b53014d2f3799a8d354314237de310caaac5d5db288c1abf936. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USUYG1050983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bae915031f22c6a10026281ac85287d31586f63a7b12a32d2e1794673998351. 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/USUYG1050987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa288d14109e9df902b004d6556973197d3fe23b1ece14a44084bc693a9389a8b. 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/USUYG1050988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795cda6651640371fdf973818cba013899cd5aea23268324fb0ea01688c37965. 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/USUYG1050992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca36b07799f8d7958e48e7fe59ca9ebbd7ed8afe2ea606bd32c864807cec9d4b. 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/USUYG1050993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63116bbae6cb057c5f771044a7090816bd4cd02826321de2969278170534cb9. 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/USUYG1050997.