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 0xeefce8bb888ab1294482d746422f939278a28f67d11e205e5526ef69728b9584. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fddb6465-31cf-47a4-b700-1e94461f92b8.json and https://artists.proofprofile.net/proofs/artist/fddb6465-31cf-47a4-b700-1e94461f92b8.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 0x4b7df773da6f93b337b3f75fa15c7da72a51fcc075e8d6c45a320a4c0adbe8c9. 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/HKC992434301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a56ebedc7bf3b126e5c1b1ebd57eb4de33cdd2dabea5c5ea8121ce5efe36ed. 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/QZNWW2393993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a792e6b8f71ec7999f299e02b3e4c4508492390766a47273169be62cfe526e3. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FR96X2391786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8e7900b3aaa0320b9bb0aa0b9fe887384286143cc2e6523dc89a79e96e5ff2. 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/QZTB72438486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd39f6a29aa1e6df20777a2cdbb279acf95ddb39cb78291e8df6a7afe30fc43. 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/DGA0P2302598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a67d3a11e6a0131c6647de064a52acfa21316bdf6330f38faec9c1efb54380. 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/DGA072485418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33359b09fc3186ef2f56c964db74d5f3a9b3ef33e1281678aed85be196f7c48b. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DGA092215872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c05b783839fe6692df0999c06b08bc95552cbc02b76c4346fb88a0f2f2c523. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/FRX452212805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954de955f6f31ae28bfc23df3e7b0c6e70757b7ee04f2d0512608b867d61730b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR2X42263202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7561b9534ff19914e17cca5691ef44579088a2afdcf379ecb91427a65914d883. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/FRS182137717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14979fae213606a3078de268423ec0a70851d5c86fe36714686a64c88bce964. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/FRS182103561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ca58a55a03c56e3bb28c256fd515c716f3d93270f053e552fc1d20e4ddb039. 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/QZHNB2059281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e0f05880f425050c83c6acd421da29ab4f97ca73ffd5b9ac2c782b800e4369. 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/FRX282117403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb26b159fee7396af01228f60d0e802c1fa7dfc4bc2815a2ec05d99145508b47. 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/FRX282117404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fd5d2401ea9d69e07d1f9d58f34e388d02b6e6fbbef7fc86d350f2cff6db1b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FRX282117405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e99113f50190a9a4f3e350c5e96363ce0c5e84d1c375da8f3b04fcf0ea8f99. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FRX282117407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2158a38bbdec66162e5b929ab2c298086327ca639b5c02b38a616da6e2dbc7. 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/QZZ7X2459107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fbf40c8b8f7e17778d1c2fcb4dcb75d40a7271caf30d99b2765d598a5b79bf. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZWFM2464976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22955147c3ee0ac660387993a2cfe9e5a9a34413508961ede9d7c91338acf46e. 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/QZDA62537552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65aae54e0e604649abd3d5b5e40d3d5171d85afb9b31df48158eb7f00eb46612. 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/QZDA62537553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc801d79f987dc8456b2b9e0c69df36613a1cdad9aed14ba39b0b93f121d02f. 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/QZZ7L2418070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a5e2b01ed1fcdce72a4a6a367ade7be41a926c67791eb00711137681600d3c. 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/QZDA62537554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03740e646ac42b7fa24341a834709d56f4525066ad40d789cf30ca4defc56e21. 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/QZDA62537555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84faaf9442efd450b2a085c90633b7093771dbf720c83b582b255e73a629ee1. 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/QZDA62537556.
Party Animals (派對動物) (feat : YINJ , SID22 , TIAB)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed9ca0e3b8b721a8260872116cf6ebe525adb2a6ec29b48003ae7af1f641c8f. 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/QZDA62537557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba78b4bd466d3123d369fbda17139f0e96fc7b1a0b8806e312bcbc736151395b. 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/QZDA62537558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2321e00cd4180393bc751ff51f9274008a42706a7554552eee43d00a023d84. 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/QZDA62537559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a264ab68f50970fd287c035c87efb28b4dca778bdfc6e2980b778aa438ae70. 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/QZDA62537560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2955318c6982572f8262a3e1e3cfb571b14b680c00ffa1ebf8a56983c3c4b7f4. 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/QZDA62537561.