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 0xfda2f2e61ee9300f96fad3fa5a9fdb9fbd66a9b1656820cd688e1d972109590a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d10a64b-bad9-4ca2-837b-43c258b144e7.json and https://artists.proofprofile.net/proofs/artist/7d10a64b-bad9-4ca2-837b-43c258b144e7.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 0xa117611782aba5db05caa3bab4198a3cf72c594c3cfbcb9407f4720f7ac56b55. 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/DKPF51500703.
Woke in the Night, the Phone Was Ringing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf67c4abc0511951e7f620774a6aa94e70b6d5c05c042f32c74c0685657e0ba8. 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/DKPF51500702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae8fa62d893e750ccfd2cdbf59e2c6d45619d235ed2226d7fa40a8f750ad858. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DKPF51600301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f64f3a724aad206c99b0f76ce76c6ac20c370f6841720ad8a0937ed86dfcde3. 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/DKPF51600305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd5bd29a85c87815273c2a8105a4952967eecf544c529e26e7e898f85fc4853. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:01:02Z), 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/DKPF51600306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf17cd3419fd0fd21f1eaa37ba55378ae3712652b11af00892cd5c96c5b8fe8. 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/DKPF51600309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9271f1af98367a4d196d76bf6a6e202089f6da37d715fc901254491aa8765446. 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/DKPF51800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c7f8c6e208da421d34305fc114db18c868bf3e4917cf1c9a600d756a123696. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DKPF51800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aaf65498760eb2986a983f0499473c5ed535bc06e3dd5def29fc44da91a24a8. 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/DKPF52000803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126afd9f9927bad9d6579546baab86574c01d3cb170cc16498721c756686ddd9. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DKPF52000804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd252be59be5f93aa3bd13408c10a17f0e934df7a3d1fe14b1ebca7cf613b5349. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/DKPF52101103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a13a3e36e9a71156d5615e2a15780392a1afcda728d5d824a054241682be2cc. 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/DKPF52200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232c0f8556864f585893326a3374a588b94d01980c8db0e5d0ad6fc75aef8c3b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DK2M22500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425f6d606f3d6cfa5ee742bde3cd5697a38feb14736505777891dd4e69c4e8e0. 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/DK2M22500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdbd69aa3f5348a6c3605fbab7fa8f62683643f8810af750752d24721bf1698. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DK2M22500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55197d76e69f601993de5f1c4ae270b3730a1cb43511653b580526e3f5f9f9b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DK2M22500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b066d83b73ecd40f14ff5768910699a5b085c6e4c2511b352396d58bb32cbc. 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/DK2M22500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6090fd05bd33e9462d5e4ef04d25948bb69cd869721d8fb362d1e99a2865d734. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:04:58Z), 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/DK2M22500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2956a3ba1d7b00418c8671d544c9883a79e6454aeeaa4ad7b1b4977a190a5b7. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DK2M22500104.