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 0x973608f403b563fcc38ac3d777ed5652aa4a29fdad2dfb6b29024501066409d5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98dd9f23-fff2-466b-89ca-756ed01982e7.json and https://artists.proofprofile.net/proofs/artist/98dd9f23-fff2-466b-89ca-756ed01982e7.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 0x1eebd0c65f3ff1fddcff8473836814696e071f1af4b247c130f4ab7440d18c6b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX89G2386521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3108dd652ed92cf531b3ca7d5f1f99b57d972adaa243b774c096b933fae01326. 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/GX89G2348976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fc8d9106466d4b49e890b7366f88b177dc69e8fddc6600814eabb8e516a1d4. 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/GX89G2323357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce3508d96514d8c67cee9f5d631309f656fb5408ce9dd4eef84c8a92c266ef8. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/RUA1H2019734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b70e26fbafb5b4da97fe5af92b93080ce3fdf6fd5e71868254296b5a6d39689. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBSMU9237429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6041f7aa6be0f3e842df55c63fd6712840231eba3b43a878a44e22e295b439. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBSMU9237433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19707c7c99da1d60368f3bcdb793822a4e1ef96f8762500847245fa66b390597. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBSMU9264711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070025fdafaf72fa7373f687ab0cec00bd0af75de927d245b8fdfd3f5a472adf. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:56:06Z), 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/GBSMU9237520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645b93bccc237a5f02a6e6d843fe0ab6872ae72f075007792e0f5df055988bd5. 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/GBSMU9237521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3967139242c9808763a26d4f60806fb093d3fc777ed70d9ce771e84623a5b79b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GBSMU0135927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731989f1bacb2d23839cb9cc2f5727b68d8ac6b90e0d90c1c604f830df06ffa2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBSMU9944218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56370a617fa03d77e42cf48c612e70bca485c37f396eef2ebde0553e2a96d38b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBSMU9944219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5faa6e58e0c4507a2beb6280566e0ca8e4ea7297f51af4315aa8a4ee93b56f. 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/GBSMU9944419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3731b9e8c3da0d433016a64030be3c02d638175168d349071dde7a573be5c9d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX38U2129811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7a608018a5c633ee17ff0a47eb3fffe88b3b83c3d768861aa55f87e97f55a9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:31:20Z), 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/GX89G2362139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf97894792b17a519003423b46d6353d675fba8d0a15da72db30701d40b081d. 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/GX89G2386705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa32fcb4069311463487aef79aed336c440a6a439f20064dba09025b4abf53d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GX8KD2306178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5412ddd126a5fed560f221b7a504b9878fee4c3b956bd983caca7eaa0abbb90. 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/GX8KD2353559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faa541f4bacf5eb89d662eaf9d372cb455f73bc69a923a1a7d0ff7532c67360. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX8KD2342351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3aa099c42361f75e13803ff531d2cd7b7877987581d78fb42f68b4589f6013. 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/GX8KD2359650.