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 0xd93e70a738b8f89c84af677f469babd32d06bcc01a2f082354b07cded1182046. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66c19001-49c0-4967-8162-a5f067a18e4d.json and https://artists.proofprofile.net/proofs/artist/66c19001-49c0-4967-8162-a5f067a18e4d.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 0xa13a412c80d553abf8bff07452248b583b51e2e504f44fcb12cbf56f5bdb666d. 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/TWCT52103793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64308ba1d014632837548f485049397c783916ea714b0e55ba9bfe43bad2fd4a. 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/TWCT52103794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344de582d0bd10d1b2d56771ee0b132834817ae4e13ec0a71085281c612e04a5. 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/TWCT52103795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb7e36d4e969ef77f989c83dfd57d539cf845ce7715e265c94209795083d5da. 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/TWCT52103796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a92195de335fc34c2dec5466944809b38f11d8016a6709c7e50548b9f063946. 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/TWCT52103797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4e11061c0b4307b9fe63c2674ef8171995839f2e18d9b616836d6302fd8e16. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TWCT52103798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93d4460e66fc21e14ebbf8b725621e54485f90a4ae02228e28f920f18c36e22. 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/TWCT52103801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade2a944961673dc5f3fc34ae68b26b83b9bbf5df371bc407c38b67cb8f5f8ca. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/TWCT52103799.
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 0x30e0084c6590d681bafd4b405bba8d870bd888e6947d965180e7755ec0936972. 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/HKG731767156.
嘿，小孩（電影《地瓜味的冰激凌》主題曲）
密封记忆 (《独家头条》电影中文主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf7ad5995941cb0672e46472e3770634dea687491f2ebb86117e943bd40e90a. 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/FRX201776666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cb98faa4e885055cc57fd557b9c91ce6b27e29f3b5943428acd8a227747a17. 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/FRX201776668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18b67892bcfdf6270ff6a2a50569432ddaf1bf0bd492169a835578996fbdd3e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRX201776664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ab83b6ddd54ab05d46c3b107c0c0761f18a846882c04b75b5520ce4549d49a. 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/TWCC31900258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253b7c555f95a48d6229a273b2566a99d86496d6cb6e96c33edd5967246caa38. 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/TWCC31900266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dd34bc17594ac40b5ef4d2032762d65d0ac0bb2038f482bee4ce32e0cee001. 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/TWCC31900260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bd0e44818b13cff0824391727825217ad751c90c611fb05687aa35cf5a20e6. 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/TWCC31900259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1ae43e3b33cd711ebe12948241b251f9f385919d2c8672dc63ab980016fc2c. 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/TWCC31900261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411eebed0bc11e822532efb19f25d1ca89e43880d9d0d3b94e846cc0c294f331. 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/TWCT51718560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa38c19ad500e8a43fd8e5a62f2c5c3a81796d9eff68f920dea3c6391f4bbf5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG732281588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a091cb0e18ecf2b630b9bdebcc1eaa7028f8c4acb3381ebfe482b51b5f4458f. 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/HKG732281591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565e291432c9fc7ebbf036678ad5ca7b62c23b52b730c1afc51b8090286c5820. 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/HKG732281592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cf63a2c7387598ac05ff5611086e75be2bcfecd6b8c8474db652dcb60848b4. 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/HKG732281566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d86fb8d0c478169dd50312b3c8ab75cbce99b8ce8c3bd96a515856d3ff24314. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWU711902157.