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 0x9a1f5590c4c629506fcd9ee4e3dfd364f365e1d405eddcd4f4429c773ac956fd. 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/10213d72-540b-4750-924b-5b9703651df6.json and https://artists.proofprofile.net/proofs/artist/10213d72-540b-4750-924b-5b9703651df6.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 0x05e1a4588ce72758e311bb9f3cb08e70799d536aae198189f62b5bcb135b00ee. 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/DEZN82439723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d4770f5963d97f8ec0d55307729fe7ccf72d2a602011f726615bc3954a29d0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZN82439661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db5ddbdd7deb30c06cec46579f44817e01748eeb06e32c36d0d9202831a3c96. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEZN82439660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb245403aa3c37bfb7f4af77ec189785f6750376704b5d2f91ba05b53e870b701. 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/DEZN82439706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b52939049d928fd5f4d9f3253e6d56bc354c570779dc6df8495e79dcba03767. 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/DEZN82439692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817986f8fe0148ca2226c7a39dcb309736135b940c5f1275995eb81d9f68f620. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:26Z), 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/DEZN82439711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5cdc71e8d7696cb857f9c31309afca0b931e40b673c35ea8bb63414a992279. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZN82439672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7368fd8a303fb3d6e7051f450bc9f88ed9d536856fb1135851260b4e292b9cee. 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/DEZN82439717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20eac6f08f1e62a6fa9f2aa3c34dd53fb9ea2c51a47b701c4a2a242be66b549b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:02:32Z), 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/DEZN82439671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a069c333c65f757fd9f4f0578752bf393ff106bc3e731d99e7a1042598e00cb. 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/DEZN82439663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8bb3195311af6b71b5adb95192517dc5c67a95ee737a27c6b54fcff625dfd2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:29:38Z), 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/DEZN82439712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728c335d5eaa82bd622b7c502213ab9fc8c19d01889ced78f392e030d8a70d8a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:55:26Z), 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/DEZN82439666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7832a00b8db0b41a79398c6ff4d3f84d73e73c33201107608d865f89fc5bf331. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEZN82439654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace72b56268daba4473a9d4a3095b14861ae7b7dbe23d3f29ef8fd986bc8bd22. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/DEZN82439653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aedcd8766e6fb6a0c798ca71511c4855c8c0c1e3f83d0e21490e2322bff3107. 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/DEZN82439715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d713ee02aabc8f3334edf72f0376b3b891f8cca2a4812d5c7009642a820e06e. 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/DEZN82439704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bba15716b6cb367936a7c5ac2ebf0250587b049ddc68e40b037352ba398880. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:02:26Z), 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/DEZN82439656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22ad9c8378f96bb0b0620085fb7bb9f7e3ac97224ec6bf33585603b1118c742. 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/DEZN82439705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7895906a7f0c3fdae9f96bad0499c19286b561e6f8b0a91f0ebd3bf8fa94e81. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:35:08Z), 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/DEZN82439670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe989a4931a3f6a450484f9a12cfefbf0d355ba7460cfed72081cf343a9cd130. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEZN82439668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdca77b899b93ce4892552cdd9bb891e3fea0906daf49f3d34dda7b11e11271b. 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/DEZN82439657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724e972cceeaf3dbfbdb6bd7c7b942b869d70f908b886126ba9a7985b6b7b288. 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/DEZN82439658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308c294a102a2f6f8764c9a30d60fe2748cddb7fd71b1c0d51c8e7d897a75815. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEZN82439714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bff30c1f89837200982322b70b18cc2d9ffeda1e56a3e6d6a402c2fe044e259. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/DEZN82439662.