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 0x0f3340a9c8af7488b96b9ecde215537d6d58395ef5bbb849283fb5442396c619. 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/ef9d7075-0eb6-4fe8-80b2-74327ee80f84.json and https://artists.proofprofile.net/proofs/artist/ef9d7075-0eb6-4fe8-80b2-74327ee80f84.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 0x73f27234735a10ca4686a01c9556e4e1b2a1ed7469adf1f468794c050d6fab03. 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/HKG732259704.
追光自会成为光（2024哇唧夏日家族曲&环保公益纪录片《追光者》主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af77900b64f5d374727c668d91bf663637701a491ea0cf023e222cbf9aecd2d. 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/HKG732432145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe938fdf1626bbfd1fa80d077c9d42a86ffb624b9c39329fb3038429dfbffcbd7. 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/HKG731676343.
追光者（阿拉善SEE X 哇唧唧哇 公益纪录片原声带）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd2c20a2850b4f02487a662a88128523f76eadfea9d64a3d10adcafa9c47571. 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/HKG732453750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66ca68063f3c72ff2a1e32db6ace8cde9f79c14d64a2ec74be6578bb089aa8d. 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/CNE222100844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ac06bb82b6448d1ed2dd0b3a73040286129c662c967272342c26d0d883954e. 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/CNE221900283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7beb450e96c8d42c449de04a1ce0725bb99816beb1cf88e53e5ff18e6e168ab. 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/CNE221900281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaddb2ddacabec3c6a184f354d200210b50106ab9ab8c8843d3a0b6d32a80b5a. 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/CNE221900285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b41e06f3c829fc1c80e59d08153fb2f54b313bcaf179eda2c1f18364dae1679. 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/CNE221900284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178c7d491c39c0404af01bd94b50ade428f1e6336441aad06575494026c244f5. 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/CNE221900272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585ff60291b30367c20db4e337877387626e3a40831fa0d6ccc05c4254a17262. 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/CNE221900286.
A Dream of Bonnie and Clyde (feat. JADE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f280728bd92d40e300c6f14ed5060e40245cbefc717afecc2defe546fe4cd1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TWJ012300701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d7095a9a9d9686b8cc5f7da4c58c912af76d22975e2c5a7f48f36ecf7506aa. 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/TWJ012300702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37c887c06df8c7d3a880b3d003bc57ae36c3a94176cf6b7e060ec97e76aa7bf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWJ012300703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d66840a81ee73982368a3623182309d4d8363dc29da6aee2adcade995c194e. 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/TWJ012300704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac8d7358fb8a43d27a62f91c8eda86ecef005860ff4d7dc3586e3652114bbb5. 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/TWJ012300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa6cc81a846f4845345c3963f1757f6d0a70bdc3aca8312fec0cfb28bc11d20. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWJ012300706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df58aa148b1d9ca6feea87d9453c771c7826031c43755dd8bea9bf3005a1dc4. 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/TWJ012300707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081bf4084e16d13494c6bc6e47854b935f738d9efc07d18bc108f6b499b2c0da. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TWJ012300708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9f75f43ce55082f7316e9fce17ab0326d4e697f7c89d4977021d1d46d41ad5. 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/TWJ012300709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8642eee1d9f7c923c138d5d4b11acce1623fd88de04b432ca2524e4a744d17ff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TWJ012300710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d7095a9a9d9686b8cc5f7da4c58c912af76d22975e2c5a7f48f36ecf7506aa. 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/TWJ012300702.
練習當朋友 (電視劇《山月不知心底事》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dac7c7dce2b92608f9c8a9b2185f3e969a6db797f93e7f12805ac1c6a187cfe. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CNE221900516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e09320bdff3427fbdfd67683394a2eda59836f196d778f52482f3afbf5f4eb. 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/CNE221900525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77c0dab35f93e9bb1472d071a74e7bf40fa8c17303f9f7af1c9a6433f5fc98a. 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/HKG732135001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a2d7efdddb3cd62c130038550a655684f3debc69a6bd007f269b2925370639. 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/HKG732288424.