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 0x528039efd0234c171bb43900f95cd26c9d0927499623114f4f91012ac34516be. 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/7108d8bf-3c45-483a-8813-85212a8c1ac0.json and https://artists.proofprofile.net/proofs/artist/7108d8bf-3c45-483a-8813-85212a8c1ac0.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 0x07b08f6da8638dc5802c5aace355bb7835118ac96e31c30511c95dd7e1c9edb3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NL4NL2145627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3d690b1dfb87ce178e6ab436b2f02a30dc041c3cff9b5e75ebdc8ef22c4771. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:00:32Z), 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/QZMEP2126865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6ed07d9b8964b8d9af482e72eb69b579c80d9ef9670167ab3d99d20b4b6aa9. 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/QZMEP2126866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07fb02e3119a653fd0cb50842bbcbd663d91c045a37418b6004914c9e2c5fe9. 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/QZMEP2126867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf145b637b908579df7ffb31df6036a7176198d824643a360c0ccfb08eaed3f47. 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/QM3DF2168135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8527565e8d69d735e4c270de75d9214e669bf95d0a36e4ddf6caae9f2272d52b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:22:04Z), 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/QM3DF2168137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eed8469e3cf10a834e2919e51458e74a287ba1b67108be5875011cd2a50192. 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/QM3DF2168134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6453fd4fc6429df22df1cd0f6b060b24af6c8ae94e8e7ad24f984b56339845. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/GX38U2210623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaea7638b62111c2edf360692628bf31665a9c65e4ca7faab1cc57513b098d56. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEZC62257118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1e411773a185f46a0c1de60b837bade0a2ceb12baa879476305cce9fef9065. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/DEZC62257119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94db9a9fecc5ccea0615504ffc878e44df9888124971ff56f26a5d67ba43f4d3. 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/DEZC62257120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfd80c3b8489def17626ffc9703413069cd6aea71515a6cec1d31d17b281567. 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/DEZC62257121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18e1a85feaf12a7b0a12b6774c415ad7accdb3fc714e17f62f12a9b07ec7a1b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:18:43Z), 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/GX3HH2289089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd629f92c48311d2a28f458c98a21926dd549d87ec0dfccb71b8da1889717f50d. 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/GX3HH2289091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984b5b9107921722e6c3f9a21c424ba0a9339513f5cff83aab2025cd2d37a802. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/US3DF2248543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a651aa7af5ff8f4582a4ff7e9a719d53ca3ba6ff7687db93c71f88300ae95e. 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/US3DF2248544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6967a3c6dc157bfed73299d49e43e0c0a6cfd677e1086f7a186968ae0fd41ca3. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/US3DF2248545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d56af8fe946032e2b6facec99fb5a1848e6040dae64a59575a4c05f6835aea6. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/GX5MY2202367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63dbff413b68fe53e73549bd89519979968de400df33b601b0deadb17da589e. 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/US3DF2275995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432823d9af262b3b73130a9fcd93e8657f620afbba7447c081a43f7c6c6446a0. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/US3DF2275998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74927e8cde07d4bc68a88a0daeff0ebaf62f7e03156809ba8372d6b4faee183. 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/GX89G2216147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c48b237ecf357a808ec33748d5afcce230fdd1476c7ea8e31625f600a910e0. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:02:53Z), 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/GX89G2216148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03915803ec1c2a8b54a32847a88ae8de2fa8c5686a74467904adeacd7b41277. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:00Z), 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/USANG2219470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb62ae49926d8bf5c7765a1faf7cead3c65d6dc4fd757a3430d4475233327fdc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:21:44Z), 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/DEZC62331769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe2b2c2cf19ff30025a1c9c3a7097a8fade49d3527295b3213c3ed60e1ccc1d. 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/QM3DF2205273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc03efb756dfcb0a199c6577db697cdafd6d7e05f6611061ad3d527a2cae3b3. 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/QM3DF2205279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6877aed93a8ac38895fa76188b73659c4f923c1a32da0893911ea77344e56474. 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/USANG2425138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483cd1f20ac39d5efebd614390b19e90ba8d3c7fbd912b7e046705b864738bf1. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:27:21Z), 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/USANG2435930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c632d7e18990b1f2484be2efc06ff24b592431b04f76b32200fc958aaa6727. 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/USANG2443774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c64e2973bc1da137499a725f9348434f7a781d48d507b11eb5f7844e6a9a1b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US3DF2404359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c440bfab227a4dceb1f7cb1f727db8356f4d7f8f9e19e422f34afa159a77de8. 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/QM3DF2280074.