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 0xb3c3e8186daac57211bbebb3fe72d63514b6fc42ab2718e81f5f91e2553131ac. 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/387d28a5-1eef-402a-acf6-d32ffa4b3a18.json and https://artists.proofprofile.net/proofs/artist/387d28a5-1eef-402a-acf6-d32ffa4b3a18.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 0xcb1441a3be4c9fd4126762b6bf58051adda6c1c9298165ad374397d9014b189a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USG2M1100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70ab85ac4fb5a6f22880867e8ce32ce3b52ec8ffabaa9a4ca678ef5b5ba7930. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USG2M1100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c27eb01d525155e3b89dd96dc2e371b36a09f21d939eb1bfc1ca124c7ce111. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USG2M1200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4ba26ad696f706671f33c2b7114be0347e59f968e026613b3ecfe83820b185. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USG2M1200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffc453a0db0bb88f810a37dd9582c451c75cbda3ce708fec21a1658556a50e4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USG2M1200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a1f6253db79ba3a5b312debb65db06d31180915491dc8410fb0a099a9b0c4f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USG2M1200056.
Cuando El Amor Se Acaba con participacion de Ben De Leon y Rolando Benavidez de Solido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a7a0be5e6ff3d0fc97c1e241939997e9cdffb26a30003a8028d07ed34be68a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USG2M1300168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d17f643f82880a465eb3f0abf587f7ee78d93b29e3d47f5f7ec484da650ce1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USG2M1300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fd1b5cf0da00ca6d9b18aaca603d4d67b0920121e920d9b5e0f4d72b94c32e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USG2M1300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7ed03277b00cea853356b673ca93da7213e8a41c3afd9e6f7192d2b2a3e447. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USG2M1500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bc9e9836c04bb36e1fac361aed5e2cc4e70e1298be49825f81706d4659bd26. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:10:27Z), 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/USG2M1500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4726acd35bebc822ee04de051f00dad9f497b00cca03f323518d094d8ce55e83. 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/USG2M1500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8880c37616ff81f985889000bb5a760d2df6c2ae6009ef2a61e9570f164ec71f. 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/USG2M1600072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a25b0071d06e4e558d4a19276c542fc9841fb880d607dd70b8f7df84b11165e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USG2M1600076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30d774758fa6973234f959c49c7187f07a04bcfced32883a713f41397e0febc. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USG2M1600078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b30f132d147b5d533ed27374976ab36e9c75a3524ccc66be20cc332e73202d6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM81880226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c379023a55faf9aa7c7029d7c97825bcf02d97884d5f152cb15b2c37f15b375. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMYCN1900688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a89b7029261a979b5c41c09e311a5bc9fb1eb398bbfc193e8da9e2bcb8c88ab. 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/QMFME1954060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcef552f8c3174591385150cb226c91967a41840df5a32444ed851f6737113ba. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6N22000895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb34edb8c4a06641426e79ae655854483619b977444d0a9113a860259de1f98. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM4TW2115913.