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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f02a84fe63df09f2fb080f6269847e411cfb0a01470e0d2aa50a8e5812a5e0. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d14a4e09-dc2c-41b1-95d7-97dd891e5c57.json and https://artists.proofprofile.net/proofs/artist/d14a4e09-dc2c-41b1-95d7-97dd891e5c57.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d55fbf294aa420ce81bdf42d9323a460dc97b5c14873c92a7850ae62e1c30a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM3DF2293681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248dfc3a08a032a78185cd758b02e4bd24cfcfd60aae969d7be827f2b26afaa4. 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/QM3DF2269323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743bcf74dbc6cda981acc7f0fded6ab23351e94f48bfee7c562abef6958ad45b. 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/US3DF2465166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0138c126b55c995fd62e0e72d4be080798064d5c2008cf3e1d21d167538e6ba7. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/US3DF2436035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba4732175fee9de0504892f4c8d4dc99aa11f75a36c62f104ed6809d8260a78. 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/QMANG2246464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b4d52f7ed4549b7ee5d844957057327f8ac6892b78dbe2fc6f06881fc3cd8c. 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/QMANG2220382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5195c3af4b99398a1952407465ed82995dfc26c4bbc81456b49b81775a5aedcf. 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/UK6822208921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d55fbf294aa420ce81bdf42d9323a460dc97b5c14873c92a7850ae62e1c30a. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QM3DF2293681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba4732175fee9de0504892f4c8d4dc99aa11f75a36c62f104ed6809d8260a78. 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/QMANG2246464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0138c126b55c995fd62e0e72d4be080798064d5c2008cf3e1d21d167538e6ba7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US3DF2436035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5195c3af4b99398a1952407465ed82995dfc26c4bbc81456b49b81775a5aedcf. 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/UK6822208921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248dfc3a08a032a78185cd758b02e4bd24cfcfd60aae969d7be827f2b26afaa4. 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/QM3DF2269323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5195c3af4b99398a1952407465ed82995dfc26c4bbc81456b49b81775a5aedcf. 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/UK6822208921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7d0066eb9f79559608091ea1ea3b31c7338a90a9c27ca0273c3b72545dd19c. 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/CAN112200391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc080905bfaf5bbaf676d6979bbb812a840c96f49b666a1c2752a68493132a713. 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/CAN112300880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd320a41da04fc3ee82ce71823b21e19231b32553e78356cbcc449e67b4203c3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CAN112301019.
Another Lifetime - St. Lucia Recoustic Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289f27167be21a9b29ac9c63c66633b93aaa487709da50e5ca2375c6a02ab73e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CAN112301020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0636863e3621085d954a488b0cb242c964d8ab0744cb46ac6c3293bb43c415. 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/CAN112300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6594dcbefdbc042537b9c6fbdcb66a658dc6b3fe9d7a1dc8d2b507abfd61fa. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CAN112200761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef456efac74e3c2d8ccda35dd9d2bf2d9b6ad1de3cc2f50b94b6bca0e9eed2b. 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/CAN112300638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b6af2b7fa93e1f72fdb136df26fc1e88d6b6407ca1307b16717eaa535fe551. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/CAN112200762.