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 0xc6be029aba5448d181634e8f6b7042ad4020ba81807ecf67786bf49158d4b02c. 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/7fedf064-4dec-488f-9459-f8c3c16ab718.json and https://artists.proofprofile.net/proofs/artist/7fedf064-4dec-488f-9459-f8c3c16ab718.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 0x114832c08955d72fb0911ed88b01175960bbfa74adde4120eb21e39612609a2e. 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/QZK6H2046285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce240a1c3816ae34bc214a081708eac5681ce9f5cdd28f060d6ba5ab56353ef8. 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/QZK6H2047980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574a94b0685233104026f85563871eb5322968671e32b1cfdd2fb65fcc75ef26. 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/QZK6H2047982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebc675d1ec30196dbbfc8449132fc69ec1f10b13ebb47d417a172be6775bf24. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZK6H2047983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ceaf523bddba14f7ce75447ba49321328f399adde7a2602d4904df71a4b54e. 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/QZK6H2047985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15edd71008938d04e5314c136e62159f5d6e61e51a65e70767c024b32ebb079. 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/QZK6H2047958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30ff3e75145a3b3c1b8cb200b6800b26ac69decaa1688c85fa90049e805f064. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6H2047960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d86074f9e19022b93d385cce89b9b55c3ee1dc0a39cf1ba73dcbf30a59c2ef. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:42:45Z), 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/QZPLR2232512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea6f57a42f155940f059093e431f1a0c02a775bfb61b258b81c9b4d9dae9015. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZPLR2232513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a20297031acffbdb0a996c160a0f8994e615390e3edae5ef1106f27d887d33. 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/QZK6F2464391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d15298833b2a7100e2d887e17ca5c0020eed10626aba1e7b141325ebbd0e9c. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T13:00:28Z), 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/QZTBD2496937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166ed88a5dc71c4ae99e8ab7d03ca14f30d9a06532179bc6f632140847737ff8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFM2409922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b4e55bba01d4d04fd9fa47693c5429fbd33a0312744f8e6a7df8a1d74435e6. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:30:58Z), 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/QZWFM2409923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5777e797366b45e58a73673d3b996e87f50468fc30d2c2862fbee88760675746. 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/QZWFJ2542945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736d06117f11882714625fc56a0ca0a26bc03e3312dfba387c0f4be97a9525bc. 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/QZWFJ2542946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00b21238236170691e6c506e83d0e39f3103310725f9d7df948b61c4964dd27. 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/QZWFJ2542947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8958386045d42050c2de6386df40c31f7cc475c514ad0cd3e83aa977bccf2bbe. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWFJ2542948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde30242cab09f3c9648eae4cd90f620021384c08fa0a696f95491e72472152d. 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/QZWFJ2542949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5dbe9dfd504283346b8a9d61148fa46f2221f589a4abf186cb022e3b515973. 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/QZWFJ2542950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f663f08558db50bc9c9bfb9e88c128cdb704d25f083fc22817985ee6a36a29e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFJ2542951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a6aa176ca8f88871fc492bcfe2c3bb19ad163d62770e301577057c06c7204c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZWFJ2542952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fdd4b48f9b4d4787ceb041db43fac271397c53e19f68c829b9ca1448339129. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFJ2542953.