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 0xc714cf6dbcf79a3adaa2b65e20bd7f6e5ec20b86003c33f7f912a6a3cf5c0836. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e0dc235-b485-423f-b991-88a59adec506.json and https://artists.proofprofile.net/proofs/artist/9e0dc235-b485-423f-b991-88a59adec506.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 0xa63ddbbc7a3837a3c6c8bd8418d6c181bb24202d5780996e3d9b87b2241ad83d. 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/DEPI82021235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94179c3afe583c169fc731853eff1700b3b416e0c2c1990e881bd1d2464c6505. 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/DEPI82021237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a33ed8614f7cebdf6993300d846d099fec8692e711cfa80cbf2590c3e5f791. 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/DEPI82021239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa280cf05319a81451402e09fb92c14e6ffecd4f2abdf9cd5943b8ca27d758d68. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEPI82021240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11477751bceb6e2ed9a4204dc6e8125e40044861dd31df5761d0ea1022464440. 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/DEPI82021241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8583884aac3c54f1c72d28ee1524fb1ad217720e23250d9eab1503e03bfb46e. 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/DEPI82021242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cadea619a38177e152886e3d26d7abd52336fe566a9fd07aa12d4a10d969c6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEPI82021243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a84988d91241a3cc44fcedcf354957eab903a898d59c6a4272a6fc28c9399a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEPI82021244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34788792aa351b2869ed481ac9cac7f3f44b55e627f88a7dd66556e19914a9a6. 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/DEAR41712794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86826aa0821fc4ed9ce74a2e618f9baccf62cf1790686cb750233dae0ee0f22. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEAR41712795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ced6c88d0807f0dedbbef398b5b0b40dda18e008748bdf14714851f2bb5efa. 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/DEAR41712797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd377b3fa5bdf7556d6728b21e89cc3c04df10f945d6f67fb6fd114b0b62d2610. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEAR41712798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792cc9740ca4b4cb3cea112439b04f35ea87db06dd80523c5f804431cc764b3c. 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/DEAR41712799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dbb76ab56e3a9922c01980e6edfe7216bbe434d484c19785981b209b627dec. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEAR41712811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf521f69acc68aea948a3081fd64e4816da32deb23c6e583377122c6d62089a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEAR41812071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7219123e2a3700b408e452ad3fda3e4a31bd99495d4db1f6f220e15d37eab8. 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/DEAR41885027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7601e81be53fb0868f6b005a03571f4a819e74576b1d99028e3ceddf9a2a9d. 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/DEAR41832184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac68fbb73d2d34f8e75ca5314fb0d10a14c43a3e217869a101b09c7d5778de08. 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/DEAR41858692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8034f31a2dc85ceb4f256b63f34125747a0a7bfcc9270a2a15ac9ca44fc7a66. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEAR41867696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedce590322ac917edfee97efb3ffa18d97e905df25a4a52b75e6e1c7d4002861. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEAR41852795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb2915236e9c7662ba2df17fdbc8e0e1f76b38e1d91fbd2a99fd57ba1fdf095. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEAR41817241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4328ff04eb03fa6d87bf9b76583635a845636e3c62c7b72455ab95c227c953fd. 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/DEPI82200188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac186fd23494d7f9970f87e15e31fbc38667e54dbe66447ad0af1f5b7da92f74. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEPI82201229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc291722d24e8e489f6a1fd830232fa5ee7f5ecbf1bb99632c9ae74ece1da5c. 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/DEPI82201838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304a9f2c2bda688d6f1c31bbcfa0692e6ad3e46154e3aacf0f0c6a607a610a43. 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/DEPI82201841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8918ec8b6ef031822501f34d2ada5c87ad14345fef40f442c34ce8f280422488. 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/DEPI82201837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a84988d91241a3cc44fcedcf354957eab903a898d59c6a4272a6fc28c9399a. 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/DEPI82021244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b8b8de15ebfaef1af2eb0a49bbf99231e275df10bfdfe75066e2e6ed46693a. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/DEAR41937494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c61e3cf04141ef78075108829142086ea7c42cbbf7ad3735e3ebee1103390f. 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/DEAR41937999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac186fd23494d7f9970f87e15e31fbc38667e54dbe66447ad0af1f5b7da92f74. 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/DEPI82201229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4328ff04eb03fa6d87bf9b76583635a845636e3c62c7b72455ab95c227c953fd. 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/DEPI82200188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd377b3fa5bdf7556d6728b21e89cc3c04df10f945d6f67fb6fd114b0b62d2610. 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/DEAR41712798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8cdc147adfb7e165bce1123cc0ac874c16552dad84ddfbef56d41ce53b5cf5. 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/DEAR41638734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925852a922896f7c342f5ca230cd02e6edb1a9604c4bc79d2d29546cbf0c99b0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEAR41211911.