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 0xb832b47b84b00fe8230ff7c7af1d833e5c1b41138eddd7cc0e13d85ab9fa1108. 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/1f60fc00-7ff6-45a9-a853-b971d53dfdb4.json and https://artists.proofprofile.net/proofs/artist/1f60fc00-7ff6-45a9-a853-b971d53dfdb4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rock In Concert 1988 (En Vivo - Remasterizado)
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 0xc289ca8e976fe45e5c96f5022a3ee479ea0e4ba225e5f6d5451909a191bc3aae. 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/USSDH1200169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574e1356edecce0f2c3b9e5f7e6014de6139d99be2a184f78fc98e4f6eca7a8a. 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/USSDH1200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8948233e73a0081313acfbc2272bd4b0ebf38d13f919e786a8b8ba064ab6b8bd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USSDH1200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea75dd6cb1c4682a695280675cd3ae3b8ee1fa1e54523ffd0f80978347846f1. 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/USSDH1200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d034d4c775983094c8afdf001a5597cbb8260dde8a2f37815f9003549941719. 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/USSDH1200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f84c882182ef7c8d7e8ad08aa1dbb9c00e2a6760ff75ed5fe5c577f119e783. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USSDH1200168.
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 0x2e044df919f1b21184da190a4a91ac69d3a0ab5ef2498ee689c58fbfc9346f71. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USSDH1200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cffb3292b0a7615a3852844d2d79058f3911943cfe1e2297a305459234d0650. 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/USSDH1200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f893eec8b046928c4ccc859a3ab7088f3d727fee17ff46ed0a3ee9c468c553. 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/USSDH1200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac1b97d0f4c0cf3452bb4fa8768520ba95d58437338cc7aa57ead0c2c74361d. 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/USSDH1200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cd530a3073d5411ced45ffd519d8f3b2ad9ec84929c86a13ec7963f507b12c. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USSDH1200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ffc4f8ea6b8704f8439826de96446f3f08415c6a86ab2fcdcacf70984e6f99. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USSDH1200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3cfdb1934800a6b04e1bef3f6ddffb5fa3effe8cb00f06f719c7d413450039. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USSDH1200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eae78123215253f0dcd41a2088c30405e290d339cab37c99122d2dc9ea3932d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USSDH1200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aaa5d3ce949195df3d2ef2c0532fbefe2b1130405a4a53bc9253d9b27c864c5. 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/USSDH1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd8de222aeabf83bb5db3443b559184aa756457f95d9f8a02cd0040dde7a8a1. 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/USSDH1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8147d4afc0a5ca80cb15d85e52885fa8eb32def23d0888fbcefbe857038d9d. 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/USSDH1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42d54717d4d394dc4ba9256c5a605529946f58000cba8936507e4a409984c68. 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/USSDH1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e203a64f756265aa3c6848602444660c5e6e88aed1e79c97b579a386c6e4d4. 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/USSDH1200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66279bc05fd9f8f77e645ab8a5e910060d5b7adb75561c86be9d4632f6a4958e. 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/USSDH1200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd81d030c67b32cb6ab2eabf8f5ccc57210fda9d988f8d03f7431d5fab18bd3e. 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/USSDH1200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85f44eac1f3b0199ebdb4fb9fc779ce7311a0555ca94d9a6b0d093fe802d13b. 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/USSDH1200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf45f838f51a37ab3d4d4e6544ff3d6b1b89d59caefde1b147f3a3e45e6a10c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USSDH1200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc334b1c7ce541903b56421e3c52b0c450728ad6050f841cc4f2bd34d6bd5d348. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USSDH1200013.