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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbb43788f769492880d540e07ebec5a9eef12725e88d1d66a0dac2a65c2a9ca. 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/7c640951-8bf8-4066-8e41-2fcb5c95c7d4.json and https://artists.proofprofile.net/proofs/artist/7c640951-8bf8-4066-8e41-2fcb5c95c7d4.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150725650b92236977c461f3769a743b8bc03f0e927449a929f30726864c4bac. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TWM810811203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8181a12dd0a7de1ebfe2bab59fdd2d49a46b96eb887214e3d09a4f22e92368. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/TWM810811204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43374cc2e6d837d37ef695ba59307fb7b8cb898ea52340938af06275b05bcf8c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/TWM810811205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4638a1975a565c8225f3e00913aa4814a6d75e68911102b4291cb025e87dde97. 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/TWM810811207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8163b3ce2ecd26db7324ff0e5c80856b2c3cb65743efab540009dadcab8e8d39. 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/TWM810811208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3fedca7884cbba12724ac57c4aedbb53a7bdae8d94e9b07608ac4682ff46f1. 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/TWM811050701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25916f9e417867acb4b7e5e3e16fcba9743673adb77602170de67fd77e28cc7f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TWM811050705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4645b64681d131de4d3f08b0e12ac49e5006378a820427dda5b6bb777b907d61. 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/TWM811050707.
Morning Glow and Your Smile / 早晨的第一道光芒與你的微笑
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce0fb2888418d643d31965802be9d9913bc7587911aea5ae401bbb68e3a72da. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TWM811050708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d0ca86763fc627abe8025eb40f5eb2d7dc51f6491bdbcf84a38366a7198e2a. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:02:05Z), 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/TWM811050715.
Four Hands (Original Soundtrack) [麵引子電影原聲帶 V.K克電影配樂作品]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3ea0d3cbafba6ea5e2cdf5f04c7806d45d6034c215b89e20eaf1dc82060bc2. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TWM811110004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd673d92d0328ec2153b228ade7a9bbe57ecc2b895911278950ae51fdf9113e8a. 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/TWM811110012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764c09fe895789c16dd96513e31dcbe8cf0f451023e4395db83436eeab4bd62b. 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/TWM811110018.
Love Infinity (2010 Live from Taipei) [愛∞無限] [台北演奏會] [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac8e04cf0510731256cae504018ad0ceb8f4158f1cbbfe08d1bac5897fbe8ae. 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/TWM811308204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549dfa7a409d85abc44b1caf967389698cb425234f63c74541dee97b081defc8. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/TWM811308205.
Anywhere Somewhere Nowhere / 到不了的地方（電影《到不了的地方》配樂）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc86dfbc5460acaaac6445dc797f7b0c14d2d4e71fde05dfd523c6ea0fa63b8c. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:08:43Z), 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/TWM811308206.
Palming Love (Piano Version) / 手掌心 （電視劇《蘭陵王》片尾曲鋼琴版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711248490b5dd774ae4477eaed4ccf5e978dc8c58ca51ace4db5f3ad7e7ec4c9. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TWM811308211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8068ac4cfd0366af0d39d5f71ab5a31a08b913339121e0de8a1a93fd70b3e05. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:58:42Z), 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/TWM811308213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ded13b8c5767cf493eaf2427df42cde67f28939c3a5a189c8e2184e9496d33a. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/TWY231607203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578d3286be6bd1bbc1515456078e7e7197ef8976826562aaadf99e82a1f62b9f. 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/TWY231607225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00daddc24ddeeb715e565d01d83c9c80204ee68f3201813515513bd599165898. 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/TWY231607202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2237c2f2f43843dbe899202d8155ab9c21034159eace3a2d361a26082acb15d. 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/TWY231607226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ded13b8c5767cf493eaf2427df42cde67f28939c3a5a189c8e2184e9496d33a. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TWY231607203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6b47c861a55ea74e13cfbc58fbe78a142df7e87e648c1eb5ce2add39640a55. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:47:41Z), 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/TWY231607230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0e741505366a682195f4e033631de60bae8ab7b42342e20aac72b5ca5a374a. 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/TWY231607207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a050fe50df9b6640a95a38cc0a3cd61d44e37f71306a3771906faf879488a5. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TWY231607208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7376f8c0868922f6ddb9ff3c5698e02c2d442f671ef87facfabd3c5df6df59e3. 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/TWY231607238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308c9b19b5b7a1e9f4a03a9b236f5f8eccbb89218ce26bcf0045c0988ea13660. 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/TWY231607239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c77d5bd8e6f414f2a7c6821acd2bb18332ff25d826bea6e928cd29162a6f24. 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/TWY231607241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970bede8f6cd7bb0160bb5436b8d72c34b9e2f5ff2d3a76e98119c5d0b882de7. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:33:32Z), 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/TWY231607242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d629dea584823388a031539dcd4100510861ab0c1a42e2138dbfbdc2091b60. 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/TWY231607219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1af9b2b045d5a6ebe02e2d3e81c17b91fcb73512b0755f8db341a7f7bfbf36a. 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/TWY231607246.
泡沫的重量 (泡沫美人魚鋼琴獨奏版)
泡沫的重量 [泡沫美人魚鋼琴獨奏版]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1509b0530d1fdc81fd27fbaf041ca9e88adf3207bb2633f0eb8a77b6dbd514e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TWY231812101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473e30961d81f1f5c5871b3d72e85e5347a493d70a7cf9ec5c45ce2a9f3bed2f. 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/TWY231812102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703cf63dbef7085a6284b1f3f91f21853bf871b1052c7667da9ece1f03513e53. 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/TWY231812106.
エンドレス・フォーリング・ライツ:スーパーノバ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29c7eb6bd8d9ebb474494de4380f1a8828589821f18909f028ee3a42d2dacf2. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TWY232005105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29c7eb6bd8d9ebb474494de4380f1a8828589821f18909f028ee3a42d2dacf2. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:38:02Z), 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/TWY232005105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1472a92caf96495358a37ed69543023afe91b8821b238a2000177f33276b1360. 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/TWY232011408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bc9353a18392cc339e230508dc331d9c734ef7df6d4bfcf8c1e2b3ebd0b78c. 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/TWK231306413.