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 0xf0133a3a64d7709dd4cae3818c9d3ed15bcc2ebdf431a266210b99248fc5ba01. 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/b42fb550-ea58-440f-91a4-b2608fa7f666.json and https://artists.proofprofile.net/proofs/artist/b42fb550-ea58-440f-91a4-b2608fa7f666.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 0xc118069b26b0ed4465c8ea2dacf46535f0b44793bee7f278dbdd8d0cede37197. 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/HKG731651745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe493e5c37015b67ea69080e4de0962d4f643f11f27e4d246ef6f18d7f5e810. 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/HKG731651747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4343fad5ddb37f7231dd6294db8b244304dd0f831e37de75170df1bef97b27e. 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/HKG731651748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d05794fd45015b454c9f2f91b42536756806c149cfafd1f929e4c4cef42325. 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/TWU712303693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e72f8963eda1350a03f142316594bd3985efa9ffe116c05c5685e1235d15b1. 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/TWU712303694.
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 0x11c4f203c9d0838beb96c45742ecbd6873d54ef10fe227bf735cafc691a0287d. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TWU712303695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1b23d8af9f365f729d89a913ede5e0fa85f71b0b955d46057270c92a46dd58. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/TWU712303696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56ac86dfcfd181ad08c4fee09e246875db5a8fca5fdbd78b2ec4a4b8778ddbe. 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/TWU712303697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c311f206d19848a549f51a28e7f8428613f10ff77f58344c296b52d355bfc1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:33:51Z), 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/TWU712206580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b798cfbf9fb2c28674519560ce868a1bff734876e3669caea3debaca3dfd50. 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/QZZ972326605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf51c3857f9ddd89a1e8c90877106d93681d563fa05ba4f1016555d9bf9aaf1b. 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/HKG732336641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a67f4ae97554b749cdd98bfd1172645c79a3416158699f8a7a07ebca00bec0. 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/TWU711906562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76519ddcf4e07a9f341e07f0c26bc3928bb5628ebadc1e4c8e3bd8f4ef6df531. 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/TWU711703302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088a3281c8a2c1adb59736dff7bdfe4133230ad7f9b127c2a124ed762342543e. 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/TWU711703303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bf284d178a444cbd1c0cce229ef47930e2a0f40d78c4b4bd92bf1976a64ee5. 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/TWU711703304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c261c46f73fd1fce9966a0b5d513b1b0faa9b48e000a3fba9d7c97787ad174. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/TWU711703305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb13c5ff12b7a97aebf44bef6e425923c5ec04c4108a9d580532698e1971924. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TWU711703300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f064544b52b7ebaad78af0af3a1f156b5a2d9eb6c53a6d67d336c3ee8464b6. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TWU711703301.
被染色前的我们-街声大登陆合辑 (Vol.2群青篇)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99f23ade62bd2fb73746650bd809cb475515b74847482547a599851385426f3. 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/TWU712106481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41faf8fe033c284cd5550a3766c84e56dbcaa927d6536f58198cd971d611d9ab. 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/TWU712106483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0be82000bc31f2459ab1c51d361fdd327e62dddd9e271adbaebd32671fabe0a. 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/TWU712106484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2beeca0765e13a5b91d35a335af8db883d582badce51d40f28155e818dd7e5f1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWU712106479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74cfd028f150b8730b8dfb14b032d4f9cb8b0ff4a59a7c77b988c82f0b0d4a3. 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/TWU712106482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b30bee15f33dbec89dc055d02b5049cf9d9db4fa1a7551fe50f222536d6659f. 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/TWU712106480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf487e53e5035b1776536a9933146b5f4d24b2e106de221e81631ccdf8add28a4. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/TWU712106485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9956e53e1696b60bcf97579d5774a683911abb5a985ea35ec40f2c63204688. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/TWU712106486.