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 0xabba7644f49d0103ada8c78ac434602694cf139d3900c5d2069c1f6e5676283e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1422baa2-2a5e-47ba-8650-91c031d5d266.json and https://artists.proofprofile.net/proofs/artist/1422baa2-2a5e-47ba-8650-91c031d5d266.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 0x622cd434109d21515491397eb1826282d79035e9684408c95a16445b04a68914. 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/TCABA1156719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c97e462cb2abf2743ec73a1711ce27950253f38f5af99c2380fc7a6a23e56c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:19:05Z), 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/FR26V1542749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f8d4407d423de14296c9c42b96b751660e5cae719a95172baa2156649cfe50. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FR26V1542752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa2525ec36e7dcb4547f14cbcb4cc07ed3e2de772f043e21588d3c12dc0890a. 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/TCACW1779378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38af65f081fd6c737eebb55e437859ce01649f00be6584cc4f72f0953e85ace8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCACW1779381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d73a106d8cfbc27395ee394607f3f704d75fcd149dfda0e286af0b7363055c0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:11:32Z), 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/TCACW1779386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780a9bf24ed46c49c5dc9a11c68f050697442f34dd29561b6ebb2de7f68bc9a2. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCACW1779390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90f65677cfca3912d89dfa77c57a34fb1241bbb35daffc0f70f734fa2d6ad05. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCADQ1842860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe697d0c5d1c4bae4804d6415b5181c96543836c812a918f0cd2dd60b684805a4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMEU31822279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee88abb0d0bc188cc1b2463c856f27fc71517f05975fa27fc82e1591bfe115d. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QMEU31822280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596b6a0c18f51e6f844238f6819983b1493cc2a51ebeb764f857a0355e9cd92e. 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/QMEU31822285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54664281962b41aac9fc2a5754889c26a41553d6f45398198efc469be2e84229. 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/ITDFW2300786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c684b95566bb5e32dfa1af7d51379f14e77d95d4310ad02b6cdd127dfc25778. 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/ITDFW2401483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f938e4b848e5b1be0a6a676f0f768aac3abbd1862a3438996f43d15b132c5f. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/ITDFW2401484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c34a476da9539589c55a0ea77fc4f99043c03320ea5a39d03ff73244ff8a71a. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/ITDFW2401485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7040cd959f512512470cd22621ca0f5bbff1714e2c696c3e1fc24df5c5c918f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITDFW2401486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa246025f64371ff5232432ffa214cf7ca625ede481a01979c0c2663d8a6a0bf4. 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/ITDFW2401487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2720ba408a26a5bdbf2f83f2e1b65bc8ca06be0603a9a9f496d45f3d4d9a463f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ITDFW2401488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3973d7ee5b688b2f6c0ece2922fdb9703666e94d3c1e97330dcef324003df32. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ITDFW2401489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaaa96b7be8d6dd19460f1cb30f6518e504ad0af31084dc60a7b757c39dda1f. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:41:39Z), 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/ITDFW2401490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc235c8331b2615a8daa7d07ac21f15bbfc9a411c1d917bcf7229108968923e. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:09:23Z), 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/ITDFW2401491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc281d8e6ddf3a98a8bfcc93c5cb06842505fda70139bc24f82c0a16f4be0df7. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ITDFW2401492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2878677a7a3360b684188a68d6a2f1d5eebfd4a3f4fde7dcb221d5ab42d35a4a. 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/ITDFW2401493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c2e787fc3cf80317129ab0f201deffd3f1c006e42820b824c3c72866a86dce. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:37:40Z), 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/ITDFW2500192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0d2a4854e34fe2f2429fbe79fc86d3288779e683c3870fde243f7f314631ab. 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/ITDFW2500828.