1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x9c083696a3723513b020b58b256f4038b50e0d880aeb1c350dfe05865102169b. 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/6ff70a8d-210e-43e7-8bd8-1c7261a95b09.json and https://artists.proofprofile.net/proofs/artist/6ff70a8d-210e-43e7-8bd8-1c7261a95b09.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 → block OTSBitcoinBlock must exist at that height 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 0x8daba9564e8789c14a2ed04dc407c3a8f7e0fa87e9f7bce5b476bb44c356dded. 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/QZDA42292861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f8fb9af9d254b5b2f6cfe1cdb8743da5271de207bd28964c4257e25c09c287. 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/QZHNC2437633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb2674d7feafb2711ef1df47d85d392ba0f25e4f6aa95e806c837363fd2fed0. 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/QZPLR2353222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474d32751f62efb8b108766d3708aa9f4a0d3842d41d4346c497a51e968d7089. 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/QZHNC2437635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b048163e2ebec21842bf9d9c43d29d905d0c4f4e4d1765c90be23da283e804. 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/QZES52363431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88aa6ef42f81d4ccb3c3bcadea5ffd5aa779cb0c5f741b4ccdcb75039245ee83. 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/QZES92336520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f489ef0537ff52f551645e684612fb41315e98f2610bc5010af91e490918c36. 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/QZHNC2437637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf0d892bbc412ed16b5e4dfe855d498a0297a4ec1b6c309a282cb6ca3966418. 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/QZNWV2378751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4facc75fca486211fa1ef196f21daae17aec0162be4d9587393739d2c87cb686. 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/QZNWV2378752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe7d510bd70062e30860795a25d9c76598a619cdeeef8389ca3d06b41fb6b76. 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/QZNWV2378753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b16aff2637387372f376b7abadea0687441ef502970f7f1f7289e841459e55e. 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/QZNWV2378754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ca3284dae0a81786a7927457318aa06e0695788b8a45ea19dbd5bd85489421. 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/QZNWV2378755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb7e86301787b701e2da877b87f78b66edf6e6cf8ba43e74ecad7f4ab2e85ba. 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/QZNWV2378756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e00f8d6b727822d2e80325fb5b19ba482cc9b9e76bafaf4b01b5c2e120e323. 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/QZNWV2378757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9d473110685589775e44e34e0fc059e19605f4ff75333a16b3c1a1e77a4b6e. 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/QZTAU2233462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334046a34935a766c48a815141d8801c629b896e4fa172d12569b395ee40f965. 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/QZTAT2257079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf113fe29c5200304cbd010460648ed898486eda9d61be26c25924fccaaa1002. 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/QZTAS2220399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d8f2670b6fe3dc8c50d6f0445fe7df3f8314c0d0a2f8ac4eeec3703cbe1d0f. 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/QZTAU2233466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c04270b53f549a6e43a70007fb64402d246f6750763708ffcbdebe3b04c1d7. 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/QZTAU2233467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb13210d41ac326b5d3be0b7f4f5df030ab4acf1d4236942bddb7c2ddeaee23b. 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/QZPLS2261020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ba84af7bf69e6fd7f8dd0c5f4771a22188c3c9306367a66edca280036c277d. 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/QZRP42248013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcabfa8ae7ef0e8c8dd648c493635bce80f3be4f2e1c0819781e7b26372b756. 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/QZDA82427185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e75655109bf10ed441be7c7b03f27a76a6b12893970afdc9aa6ffc8d544e75. 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/QZDA72443193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643d101819fbf126f01a0ed7d423bd4587500517975cd1d0052dcef60410d5cd. 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/QZFZ42451230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa566e73470804e6356ccc467e7f3c9670de3e3cfbfa2534b3039221f67744fcd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTB82310509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc213e2b902cef9d348be4b80542d56247dafd43c4e5e6087a493e874cd85dc6. 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/QZK6M2375080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b9e7f1123d668a3a77cd3ece8d1f8a0f2da4fac784f35b6450864cb42d1873. 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/QZHNB2302673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b349180a90042c91184994bf6ad84bdecf3191a77c1727ca8b1a42223d358f9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHN72360467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2954d4673ad5ab9ccc164260db568dc5a87ad6e0b4af8af1bddb10b913dd6464. 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/QZFYY2352622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e011ba7156e646c7eea0138c96f445c285c17771a07e4ac59f17c8a1faeca0. 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/QZFYX2378986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d43e25857852d1cf4edc2c073972b1a11ce6c88eaacda25546ac2c13ff2349f. 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/QZNWU2292525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dd7e207ba0e73cca0dc46be7418d456e32d68a16ea536ded3ab60deb5d9030. 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/QZK6F2227593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea6d4d12916137a6c0ee589ebab59de1e14734dcf869ed9c2995ec8d231f0e7. 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/QZK6M2206592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be5af21a86b5ab73abe2585a40a47595abe29fde9a6c2bcc620776b34bd7dbc. 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/QZES62296250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649d4721118378b5fd245f2e5bd3e87d489d6e6c8b908a94d897283db1b33234. 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/QZFYZ2254890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb3383236d79b7f777e3dfd3c7238788d9e4876599524b5d8926b1a0913cc4b. 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/QZTAT2173777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e0700c475ddd3e15b6e9ede6e525cf1c999111d7bda523cf2bf18e7f641446. 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/QZHN92490422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dff23a8010e6f529a46993af4812370a560e71e4be8e9d76c87886e15d370e2. 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/QZDA52405433.