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 0x9d98ac56d07101e93e5548ad81f172e9e4699262bc715932efc6c4d154021e5d. 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/48088d5e-26b8-403b-aff3-bc5a5262c7a1.json and https://artists.proofprofile.net/proofs/artist/48088d5e-26b8-403b-aff3-bc5a5262c7a1.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 0xc54d531c5bb46a5f42fe64f5fe9731eda14cf57bc4a31b6bfd091d74b73b2d97. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/UKEX32011462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79885bf4d41a7087997fa8d630b79c5e775965928a06ecd878e90261801e5fcf. 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/UKEX32024831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734d5d0f826cc36e92a82e06ec89bc4a01bfbf1e5efa6bd01554bdd0c58c70c5. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:30:45Z), 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/UKEX32024832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cd3acead3e0e14a49d7ebca78b254d4a9700bb47652364fb92c27bc0ca5746. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/UKEX32027577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a34694413c254c3abccf13f2f9836d1e5f8dd9d2f60b92c9ea68d0dfe1aca3. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/UKEX32027578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde96daea21fe6f30f78d038a5c307d4b23b52f76ebab4410bf8b37e23b51be8e. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/UKEX32027579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9332fc259414ea5d67e7bfc12aed22b198d3bfaf111fc9cc7303e7f88beda985. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:42:37Z), 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/UKEX32031750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bddfcdf6f5a415af31a40456edcb4efe74b290e0a00b9a3abe0ed42ff84f6f. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:16:02Z), 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/TCAFL2159534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff789f40bd1c13d40e40bd58007f9f9a5f093b71c11489995909bfce93d39a8. 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/TCAFL2159542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5724901ea83203210b3f8d73b654916645b685f19181dc8833a6a8ee9678c350. 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/USDY42146294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb8e5c9a96ee0f181c77e74adf6933cbc24319f0b0b14c760c818fecdf2251f. 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/BGA472119580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0525d1cbfe2b320a73cc6b20fd6dcf1fffb4107d0c186154e87fb00e51e94d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BGA472202768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2276a1c240cd26be6eea5221780f3b44183c336319ce457386295dfaf27a9f91. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BGA472202769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48448e5c3f567234c9154d500d0501ee582270310f4319a2668a2b71f9c2a06. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUA322203391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9818d7c61366aaf7283f54f0400f2a8569549e50f4ab028da970297982815de3. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/BGA472334906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73283cf9872ab313fb2dea2be10cbc875344883105e0d9455c2a1aa34d5db72b. 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/DGA0L2376840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843b035d3bf4aec818b092bc4f3a15c851f066efa49fb85ee606a4c3e504467b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:14Z), 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/BGA472401339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04236b4505b4dcf84026d87ac73521f164a1078f22fecd97f311194a7c1e4091. 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/BGA472401342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4822f44ade8874ae6f89fb5a697850c650960fc5c91d3df70d182758c2dd5e5f. 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/BGA472401343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3df16c72017842de5df4726a460101f26be71430e89122fd6d47f572059418. 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/BGA472421611.