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 0xac31d777e482dbe0cf05cfd41a9ca0ee86b9d6f300cef63801faa989a2972ef1. 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/be6eeb2c-2e40-4114-a328-55abe35bc683.json and https://artists.proofprofile.net/proofs/artist/be6eeb2c-2e40-4114-a328-55abe35bc683.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 0x36619c2a02a58992c47327b895e97fbfe93721872ed9d9c655f179e3f3695831. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/BR0ZB2100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a0602bd9e3532cdd3dd37e5dc35f481c96190a3106d0c7293c4bbfea9a7ebe. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/BR0ZB2100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f273324484349ef5cc9ea34f262f0e11424d8edcf6ebb0b6e1db6948fbcfbbc. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:17:51Z), 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/BR0ZB2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ae7061d7744f1815bffcaa3c8caba3da7530ebc8a19d672ce486ce85ab68d1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BR0ZB2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bfab4772f998a2098675c72f815f5484828ed9f60938446cb47b02790b3629. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BR0ZB2100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa320cb5d892a7a70149ae9d98f52e310a6b430824b4b126f00069236e8eaf2e3. 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/BR0ZB2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836f51fbb43e9415fb47f577fdce3138ce5436a632571d79c284ffa3dd749aba. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:38:08Z), 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/BR0ZB2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8395a80e4114e6941e0377536b7495f2c26ff487cf7c18631b44ec16261b9e. 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/BR0ZB2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6d0ccc217ee05bbf6dc6a200dd72ad1e606901bb7a91f419c4b927adfb4c6b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BR0ZB2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23304847e1cf98be84dd23b35c75d952186873fb5b9c4bdc2565f6b5ededc4ea. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/BR0ZB2200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dd66905348c7c99507be299a978deb3e7a27a3249841813ba0d3c80a999642. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BR0ZB2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ce85952ed20febcbffd9e1a0d936537215157360505afb59f81b54aeea642f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:03Z), 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/BR0ZB2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5965288bd10773e13d0b07cfffb0db3533aed67b3f1831f35d63169ba8b5fd98. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:32:45Z), 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/BR0ZB2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd772604a762f78c3575ae64120b5af82ad015c3f54437b7230156255dbd3038c. 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/BR0ZB2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1b9cae1379c891dad8a8233b973639316ca52947139935804244c1352d62f3. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:35:24Z), 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/BR0ZB2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742dbc5ab14073a68431e0a4a2e251b8d60d72ce6e722c4036d56e06e3c029db. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/BR0ZB2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fc11f0e18f8e53f7bb61dff5845380d9f8adbcbc0faa7dbc763b66cb9af030. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:20:33Z), 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/BR0ZB2500006.