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 0x974eb47d1088ce6cce8dac06a905fb664bfef8d566550299ae7e3c3e3953e0b9. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aea9d78b-3413-494e-9400-e7ed759846e9.json and https://artists.proofprofile.net/proofs/artist/aea9d78b-3413-494e-9400-e7ed759846e9.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 0x20f74458dcd03c464dd2755f73c822a01f9b48098034e084b2dcdd2a8b38f0ea. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKI310911002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d318a356946b78c3f20b369c685d375eedb744d5be56412ec5dd026093ffc8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKI310911005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa7face55d73e55addb122fd6107d99a3eb697bb7da1de0d8bde1ba2dffd1a2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI310911007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f92de6714bb0e670444d6e0d8d6a9afc66f44b7e837aa2fffe3ef9018e55a65. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKI310911009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b7c1a237383f4069a07b83ce95a43e30745c7f707587380bc3fab4494deebf. 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/HKI310911004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7fd3566ee33a2a667718ade4d0d14907d1822f25f3319e98f4e250bb5c357a. 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/HKG482310718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390a5a4224553611397350a72e60a9da9b01088c079a3ba04c19276c4cdc92e4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG482310710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1999276a7a109121f125410d7b5df9a772e79d94b52aad928771b57c015e9b7f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG482210594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86620bff96573b67cd164fb987f902424ebec8aa74748abd4233b36612e2615. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKH442100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d9087617f652a27e6a992bea4451a48db572eb5ef89d9f9797acaf1e81cbe2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKJ961902003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94b49df511da14bb22695546b57ebae1381bba3c134b246ad03fcfa27ff2da7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKJ961902002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d9555a7c71b4718cc50c6f80edc9a56fd03c848c82412a3e36913211a7bcbc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKJ961902001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7691e5741130b114f906ee5c98f8b22b448615b0d0355783ec1cc8b3ddc51d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKJ961902000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3201dda979c378cd469a1a5394296b732329a401bb2204b820705552f5b33374. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKI311528002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e3ae5f72ca1b409e9a02724f61a23849a20a91a8b2ab9beaf0211c59f783ba. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI311528001.
注定一個人 - 音樂劇: 長腿叔叔 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe811cbe87aecd9ecfcf29c5cf98a6173c1d92fabcb4528d1c34ea35d97b2369e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKI311300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a86252ca55f973ca0c58b679dbc98e6fdf766873b80e7fd774622b3c114005. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKI311321002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c7b1af21c8f1138214fb5a2c0d68285d65d057b66eaad56104fb2e21af922a. 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/HKI311321003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a86252ca55f973ca0c58b679dbc98e6fdf766873b80e7fd774622b3c114005. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/HKI311321002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8864ce6b562b13bd9f1d9e228e65c046ad24e31109b12bf9fb1ccd99d0ad0bd8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKE971504801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436c9de961cc88a5cbab1810817d2db6d4a185ff5eb1360c18a2abbad1754d1d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKE971504802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d946db3e8c62cd02919b84d752c8e6165095960c56de536b86b4a49329f03ab. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKE971504803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b06886e0e9f191f680ef1d2625b816d3c9223d08bd3d062f11687dcfd244952. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKE971504804.