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 0x565d6d43d9cdf0fa47062231a1d468131b35fb4e7d7f3b050c3689d51445ac4b. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92eb3783-19f3-423d-a860-9b61ccf94115.json and https://artists.proofprofile.net/proofs/artist/92eb3783-19f3-423d-a860-9b61ccf94115.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 0x2c2d8b958aaf7ea68dbb4f59ad8a3fe461e6e82985d5b2d176c7e98cde9ea71b. 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/GB8FC2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8e37e6ea7181ca99c8d14d59e075807cbbbf50c9c20f5b7961317b73084cb2. 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/GB8FC2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b62661342d0fbc59a97446cd7dfd0d8694a52aae12345cd10d6ccaf9712356a. 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/QZTB42305508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acf94ab890dd56ffc2ca4ad5fa28582100328ed29de1d5515f012f212642452. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GB8FC2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742e9c113c54e10550fd3dfc224733300df8b79dc347fb9488831e3034f384dc. 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/GB8FC2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabfb61d50ccc2fb91ec93ef7e4862059b0cb146a229769a791c082d23a111b3. 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/QZDA72434962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0bdf259fb54c9f6a1a0724f2214fd4dabb479b2a20d8e86ecaeb4627a11a60. 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/QZDA72434963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79e77df25664a1ea2c05affa5de3cbf8000fb2914996c4939a8f9c2cb8dc91f. 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/QZDA72434964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1c4f65bab951d5a4c82277f977237b83224560e7a6b215c51f4290539960db. 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/QZDA72434965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac436184705721fc19993199c11274bbe83601ed11ca1dc0d0d736db1de7cb2. 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/GBHLW2002829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9ba48060d874793373c9673701b3fc53d4b74736adeaaf69a526d181d370ed. 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/GBHLW2003198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b214e312fd4a3a9c7eef2d583acd725c8ed005ad440ee82a3bcf2a0efd2f6d5. 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/GBHLW2003199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be14e34df86bb25d0efe8031e3b60f7d111440e33c949f74d24016158937c6d. 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/GBHLW2003200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be2af1a2470829a7497238e2a13b4e1eff801cfc0b0d492dd2af296b7901c0a. 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/GBHLW2003201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8e37e6ea7181ca99c8d14d59e075807cbbbf50c9c20f5b7961317b73084cb2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GB8FC2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b62661342d0fbc59a97446cd7dfd0d8694a52aae12345cd10d6ccaf9712356a. 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/QZTB42305508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd84ff18b59a2cacff70bd11ecfc1b8c601b4ad1e56c7a258051ed824d8a0b1. 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/QZHN62026931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895b3b71f7d60482cdf6b6858c44176a872fc2b476404dc23cb078bcd85e0c10. 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/QZHN62026933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4903f2aa41aa01627b549f624a0ce004f175cbc004a1acab732c24f7f59e16c1. 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/GB8FC2200043.