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 0x99dd70f07cce0f252f037c3f7e7bb9839538a374d8a62b209554d78c055d39a0. 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/d7aec807-033e-456d-be5f-c04c9a88eb60.json and https://artists.proofprofile.net/proofs/artist/d7aec807-033e-456d-be5f-c04c9a88eb60.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 0x3dbba5c5d818da27e3768650238e69673c71ce9ed364123a02093ccb9756436b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QMPKX1313396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc189d55aba310790e42ff7e3fa492f9c977214eed5ea36eb565d8f09879c3e65. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QMPKX1313397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bb6844a34d9633e0b7fab0a1ab301504cdf35ea858b286c19bb4c1da01113e. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/QMPKX1313398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbe14262b303db28ceabe482d4c7cb9004220fef9e262a02c5611f090c5e91c. Chain 2 (Bitcoin): anchored in block 957622 (2026-07-11T22:55:42Z), 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/QMPKX1313400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc821122ed3a730148b90b584e5c3a7487f32d1dbd11a4620acbba1ae40877dc3. 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/QMPKX1313401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370fe89cb8f80bdc4fa8ce525d31d0b573705c839c020c24be69c1795a879241. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/QMPKX1313403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ea3d815884eb2f39879a2d31276107c77c747154e06bf2b3ed87ca773b31ee. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:11:19Z), 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/QMPKX1313404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0a78425d02a0a97b2ef2faf6085ccc78f4c3bffa30ab693094e6b3807c5f1b. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZES81993771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a34fc6f2cd00fcb0ad65cc7a9ac8952e666402a5c931d6b6401b46d985e352. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZES81995512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e53fa8d11c47af45ce6c7e81a612b756e816b0379bb7fef1f033fd569f99c4. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/TCAFG2001858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa2a07217be32b872302bad6c2ba52f43b18ebec81babee51aab8869d3076d5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAFH2021677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24cd2dd8ce1eca6422f2cdf1f20eb6d8e36c57f4445b008811ef904cfed3ee8. Chain 2 (Bitcoin): anchored in block 957622 (2026-07-11T22:55:42Z), 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/TCAFH2021680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460d0c3db6c1f3c286d9634511fe70620e77a551e391470bbb2612a71fc6eea9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAFH2021682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e44f2240c78fccf0769ed90b07c7279c92f70e40cb587fe5958d35d3027851. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:48Z), 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/TCAFH2021690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e63feb57bb2bf5597175a951a15d35df0c291619ffed6dc8d9f9eddb0246950. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAFH2021693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10d352b923787e6a0e05701c4a733c461c00bce9bcd31de0a3a52c140bdcbfa. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:22:45Z), 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/TCAFY2144187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72961c5a1190a0f830c62f36a5083f82032431624e408d55222525341c685d31. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/TCAGH2286538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4123ba490e46129e85eb4151313d783e0b445303dbbd486b09108a2fbaa3be. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/UKXN22331308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231f2b4429751d13c0138fbd676a07f73408c47ac343a97b6edd6d0dc36f56aa. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/TCAHG2347921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0795bb709368ebd1b2880ccd6d446153f09b649b30ed951aea9711e064d3bf20. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/TCAHN2312799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b8e40f356b1c3097e9612338b2fae580d9370a5d35f5ea8061cade343dbf72. 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/TCAHR2330164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8452a68f9b70a3409ace8eeefb3ced7af96b94220294e337e17073320b0fb0f. 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/QZPEW2493153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fc479116f3f942d6b18a3fd2f0582629cea5039e182cb4ffb8b4607bf22c61. 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/QT2VB2439299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e3edcfbb703eac1d5cb352e88b729f2f179ebd4b243d0cc74eb6883bbd0563. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJI2596596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7997a6bb64d19c1d9533a2b580e96314ee93e1a87e84e980d9405ff02dbfd191. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:01:18Z), 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/QT2VB2506493.