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 0xdab6d3fa1c0a5e2e00609c64c9b8bb8f52658f25d55ade5e9bdf86a3668fc985. 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/9a770e91-3b91-47e7-879a-f3841021b37f.json and https://artists.proofprofile.net/proofs/artist/9a770e91-3b91-47e7-879a-f3841021b37f.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 0x940438b317e52c649d4b044e21838c3a887084b9e0f3b758916af0724ea8c980. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:40:22Z), 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/QM4TW2543934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d118fb938dc63036326bac9d39e3b1da97b221daf0ed79fa325e805000e757. 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/QM4TW2543935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92da9560370b79e23238b4252860a2aeb854ff80714f2b340cf7dd001b86c9ad. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR5R00901864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86f956657fd5aa2cb9ebd4ff4ef3ba948c5586ed31a091a386c68a05e83c5a9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM4TW2552507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce07339ab88917022bd624e42b21c018c99c5f25fc074425e087ded278f1c615. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM4TW2552508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ca7a36b7b0123f7e53bc13f8f5ae76975697dbabcc12b1cc4edc474edcc30a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM4TW2552509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf38fac0e19636849d953739b63735c0ea642c2d55a558bbdb071b8588e2425. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QM4TW2552510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80ec0eae1cb29057b132a4cc782c31cae7cf0c8505bed2759b22cf9b85bd992. 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/QM4TW2552512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dd7bf8b4e158873ab7ae6ae2b8e3846bec730edcb9bfcccd3d974c91c7de6b. 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/QM4TW2552514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac0c715b48b93c557a4fa5f5162065f86dfc8b1186fdd1a654fe7a0b6b8d7d4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM4TW2552516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5675fba1fea568e41ec218f717e7cc7b8e21bb5b4a99db6eb710b32443636d9e. 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/QM4TW2552517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0914ce68944337920fdabbd0da5c92dc2bc395e758598b9654b71c62960d5f6c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM4TW2552518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264c312103f47364b0dd89c599ccee3b039f55cdc151d4c726dc47c2baef4a3f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM4TW2552519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4ce9b3a5333cfbb65494cbe308e2982bce74f65f1c14af64fc98cc64427ad2. 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/QM4TW2552522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0108f74c509a289254f2c33ed086ce06328c8c955831f95ec8e72c17d808c46d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM4TW2552523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8da917c9138d5bca67e2e73ef789cbc0839c789582ab4515aefcc99e896058c. 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/QM4TW2552524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021c2434a1eda9f9eee21185ca000466bb3bd494618ec7f05b04f038bb12ab80. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QM4TW2552525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806b8e916fa42c79fd990fda28e84030a7a5b10ad722c0f3e506732fbf1490e9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM4TW2552526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7303bca9fac48a6a01f039d9be3766305f670dc0566b4eaceadf38a56302ba. 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/QM4TW2552527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaad697bf972058ff493f0d66f158b9bcf6f05d82c5d71fb9912e0189ffdcf01. 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/QM4TW2552528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10926e82729bc25971984e70d004bba0342ebee88ada422fe9f1111411eb0d1c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6MZ2577799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde9f56baed4e1e903c64d72bd521c5c2d8e24362f3e2e9d1ace1f9d1a4c6b0a. 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/QMFME2543132.