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 0x76c7b5f0192187e04225c36dfeda66f4c4d43fedb720b8d5b2aab064fa971b08. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7dec17a-424f-4f98-a649-d80d6276ba3e.json and https://artists.proofprofile.net/proofs/artist/e7dec17a-424f-4f98-a649-d80d6276ba3e.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 0xfbed21df8c20f3a10aebada453a7d69b2d9ef54102e429d6d6c24096109a433e. 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/QM4TW2361145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c75f7ca6dac262083abdba2d6573f201dad6b1b360051d28867a403eb4ea671. 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/UKXN22381305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab52705689ce018072bd4b41fe2c25251e8f56eadf46340e271e9d6996407d3. 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/QM4TW2422108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaec1573a4c06d6b69f3a92d0f527f4cc9dbdf6d14962aa1ada76ea05fe24dec. 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/QM4TW2422029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b509fb52e3c79eaa746ed3490d0921aa7dd06c037e61480caa7148f65348cac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFME2314454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04716ab13ba4cfc64b568b49c08cff44e7b6fff58004abf8fa78d1a44564ff47. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2422112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd33e394aadcc48dabdf14db920a34c88084f50743b8e53dd1b6ac32a48e8af. 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/QM4TW2422116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafed1b1f5b01a724327c0bb13c4619b1386a1a8be8c98898a5fb52abf5a9fc78. 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/QMFMG2344023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2200894dc46ba6872a13cd74b3730331d15cf2ed83c84c6f58eee8a00be974fc. 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/QMBZ92353087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029edcadd6dbf468315fdc3f57d1ebaed1680aed19557c2ec6486595c9c12fc4. 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/QM4TW2422117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a95c5ee63649e66ff6e95926a88ea2f776378cf0ac7416e8cc70a0eaec8b29. 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/QM4TW2422118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc894718257bbd4258f92ebabf1c446022bb90b4fb66c52e8f55146904c702df9. 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/QM4TW2422119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b69356227a3948fab778dc3b38d9f50c3939083d4964e9e74c358e251ea1742. 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/GBMA22098373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a85f1d696a186a7275cc26ed2c968efba15bd877a233bd2b16c306b6333dc5. 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/GX53U2059197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4e5147792d13630a5d2bc44a3800777a2f625a8035349002a50c9880b4e657. 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/GBLFP2206743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cb23c2fd21d85b611d32cca13829fd6fe253143afd1b66b3c13de0165f86e6. 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/GBLFP2042785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f8113195692e54f600fde5b90b871f2444b9abda89f2a21b3356a578fff2d9. 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/GX3Q92097219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bc7a97f5b8e4843394c55e4bfa1ae79946bf3947d174116c1505aeb5838424. 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/GBLFP2039977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a2bea8cbccce52a1ea217b09f6510b01c46a1d44a56276c5a7fb8c5a108a42. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLF2C2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b509fb52e3c79eaa746ed3490d0921aa7dd06c037e61480caa7148f65348cac. 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/QMFME2314454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611a1f13ac0310f672d17862ced16c9ae18122906a89fdb4b1266b8c3c8dbe0d. 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/DEXC82300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2200894dc46ba6872a13cd74b3730331d15cf2ed83c84c6f58eee8a00be974fc. 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/QMBZ92353087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf416de655521db10c9f2117fe0b29afe6c733e19ba9584dcb9657b956a9b78a4. 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/GX3Q92097673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e79a61cd22a48713210f0ea65eba6e137cb8ace7dd7bfc549b4428d0053c3c. 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/GX3Q92097506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4e5147792d13630a5d2bc44a3800777a2f625a8035349002a50c9880b4e657. 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/GBLFP2206743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a85f1d696a186a7275cc26ed2c968efba15bd877a233bd2b16c306b6333dc5. 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/GX53U2059197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bc7a97f5b8e4843394c55e4bfa1ae79946bf3947d174116c1505aeb5838424. 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/GBLFP2039977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cb23c2fd21d85b611d32cca13829fd6fe253143afd1b66b3c13de0165f86e6. 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/GBLFP2042785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5930f77b5a9a3647e09c4b3b4679a4d13da707fa8f6433f37fc155372c8f2245. 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/UKXN22098069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b69356227a3948fab778dc3b38d9f50c3939083d4964e9e74c358e251ea1742. 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/GBMA22098373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3de877b6ea0c10d79d196e68260991044d2cbac4a9c58bfcace70e3fbd878eb. 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/GBMA21861376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645a2d327b2ca9808dbc4bccd7991f65e4a7d96ff5c7168624fcf8d9f0ba62ea. 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/GBMA21857521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248b3b5b27b88e37ec3a497c0fa84ccac664132c880da73303b0eb3dcf9e8da7. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/UKKV91700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8844ca73c21c9e799de8de7c05f21504c3bf40f0a0db662d3bda2b43ed0e591. 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/UKKV91700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46b5cc657f10f876dbb479138fed17eacc2f3c7496d9cb713abc169c5cfb81d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBLFP1744250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecb3ec959eafafd6c33a729e27df7ff19f25c316171dc9e537757b9c7388bba. 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/GB45A2102615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c75f7ca6dac262083abdba2d6573f201dad6b1b360051d28867a403eb4ea671. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UKXN22381305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbed21df8c20f3a10aebada453a7d69b2d9ef54102e429d6d6c24096109a433e. 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/QM4TW2361145.