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 0x0116ab1c66ef6b30a7b60b777f83bd999e382445cbed2c6d7a0ef84eeca5b21d. 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/954947b5-f349-4d90-be74-fc36dc7de5c9.json and https://artists.proofprofile.net/proofs/artist/954947b5-f349-4d90-be74-fc36dc7de5c9.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 0x2eacee00b4472aecded2a290e824fbf8be336882bb17f276016196bc422a6f2f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CH0600200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ecf3c5b2c642d9e0f4278698caad470ec9e5cd27efa079663b866564b85476. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/CH0600200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116ab9081f3744f3ec35175a989257665e12c4e5414d71c266b497efc1d3dc39. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/CH0600200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935f4e957923c3b0329ae9c350b2f594a94b1576336966c647a7d504fb3aa8e6. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/CH0600200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2ad0ac0660750324689a18d65205b8f46874e023d0dd2dc915da77a239b927. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CH0600200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e278182c4dc3cf139c0452cd93119a103c31541bab70922751eb046cfd0af2d. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/CH0600200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604cc2d159937c2d82f8ef67c6ae2877c9ed239f16cc5abfbce1996cfa72884f. 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/CH0600200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199a42a8b091a3a97517f050a94f29659ed5594802ec849ec35daf0da32a7716. 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/CH0600200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff8edac851c671bc5348561fa59681d01024dd7efa08d2ebcc15f494e1ddff0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CH0600400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc223b218b02deeca07f465952164c3e6e4f2b0588f73be4b220cca83a99e1f4. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/CH0600400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a99ca31f14e03f63fe6365efc5f41ce231c1c137543ad873976e95ae0720c0. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/CH0600400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc2c579cb338aa5e696ffcb05baa563959e76e0cb0d5e4bf9f227ff46d5dab3. 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/CH0600400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6af959236ad830fbc77aee4292a5d27382e4e94022a950317befc4a3927cfd. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:49:13Z), 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/CH0600400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435d703945ae2208942b5d1052e017b380b1c16aab65507e41cc61883b57c91e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CH0010600168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d1a4115f2788fad6596901d94d2fb503be16edc4002cfbec217bd7bb463fc9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/CH0010600164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19434f53f776039e14dc639795ab5b7986c443870ddd4f58d1da6eb1ebedd6fc. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/CH0010600171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea572f34d729e98351608559e4d9fb1798a081bfbb52e304bda20ac46104e8f. 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/CH0010600165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf67fcb86365f5be2d689071ea9110eaac9c6d9a043e1b281c30f6c2cf164171. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/CH0011100250.