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 0x47d5b677f4dd6f3c0e9ee2bb765c4ce5dc5ca99ffe2e5e88dbb446eb4750bab6. 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/2f507b7e-7ae4-44b5-a795-69256734e7f9.json and https://artists.proofprofile.net/proofs/artist/2f507b7e-7ae4-44b5-a795-69256734e7f9.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 0xd667fe1fee197d98be9e0ee89e1783ff4c3f6a80e2ed5d04a392207f85e3a236. 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/HKG732309836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c15715c9fc1a6b8b216a26eb9eabb892e0a80c91269ae2af0c89f2b21ed8e65. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:41:13Z), 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/HKG732340281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a32398c3b78de1b6040a7f99161b48e90ecf88228b37f88e2277ad4396fc992. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/HKG732298476.
麦田 (《楼下女友请签收》影视剧片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed620f92d1b4863d5b92321f0603bf39518ac28567963af164fa78835c86f144. 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/TWDL72009556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e733999ffc9b07dbdf9b72a7a682d7ad19663befce2d8e436f5c441c2cb2271. 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/TWDL72010303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2628db3d7787edcacb75a8a160326caa71f5ba528294e9a76ad58626b5a957. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:33:44Z), 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/HKG732295512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d54f64c7ba30969ed46e9926c0462f3271a940cc5b6ab485792a6dc11a23df. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:04:20Z), 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/HKG732340265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be1ea6b71c8ee1ee147ce6b3fbb5ab96e6f5cd4971222442f552e7ebcb8de46. 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/TWDL72019867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcb678a55355dc1a2d2e7408eb0ec275ad0d09464031d2e18eed94c5eae4a25. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TWDL72102472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf541ae7e9af24062c29c461e8a5676a6dfcb3bbbadebd363d83ca8a2eb8b0f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/HKG732294400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835afc0b3407209e8c9ff0a6bbd546b2498cad6063093488857a3e47b70a7a05. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/HKG732110077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fb3d1dd5e788d2631de8bb635ea96fb286baea8dbb9496114c370977365f78. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/HKG732110032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2701345eae8953d21a59c45ce3a0e3f1df20309cb2c79c830d62c1d61b10cbb. 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/HKG732139840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f6c775ab616c32df933e39f32c368a41c4f14a27568822e8b52738a5b24ed9. 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/HKG732340263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf937728544cf1ab2a545e90e6741fb7b2e3c2059102f7d246ea295e5258c4e1. 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/HKG732309844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2880670dc6de293c5cd2b52fa09e21f10736a36c173d88b0ab27730dbaaa411a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:41Z), 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/HKG732327292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd095fb16d5bece337e42f3f28015acb1d09dbf3aff3fd5300feb9cfdc48dd3. 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/HKG732340277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ff72153841ded403a738df2d941fad90571722b9fd4fb3cf49740c75a9c947. 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/HKG732340278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7380c2d2af4aa4a7d92308bde9875d68678382d46e5f7f051969d6d4e4dcd695. 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/HKG732358282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca92f5baedf67db1626c4f431131bb1c317dbe71d4f09c010523323396f3b25. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/HKG732447216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94365c7c165b2a7217430faaf2380a55b3f0e0412c7ff23bb459b7e969a0c13d. 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/HKG732406675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2c99a4b792c154ccd01feefefa768b6268f0e89522904386512520f784822e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HKG732449085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2460e27158ca004a9e681488da07031bdbf826b901bb55c91331c6e3f224540e. 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/HKG732433683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fa40a4e833cb80063ec4e861ea723a907ac049b41dcb4e6eb2e552be18d621. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/HKG732450447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feb64f0d1a8fe17136ca812dd6ef0c78b63f55bae1f5a8d6f7a89cf74cb98ab. 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/HKG732456871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1480b80d5068e5697cd9844d6858dde89e1f1e6c3a80206f80fa3709a4abec19. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/HKG732539996.
麦田（《楼下女友请签收》影视剧片尾曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6882efd26c6860bb3defbb99e21e2e822a1e6cfd2e52d41e712f01b2cd6294e. 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/TWDL72009031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf830d82a9940e90d86cfebda3c2694b190f2aec8ce257290f5dd76ea7677a85a. 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/TWDL71907581.