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 0x8472c58711baad906b33981594b8ee6def7d946d3c830ecafb27e2a2a390d8e1. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84f61bed-2379-4c3d-a486-26e40650d9e5.json and https://artists.proofprofile.net/proofs/artist/84f61bed-2379-4c3d-a486-26e40650d9e5.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 0xe3b9134fcc6bf4651924616820cf5944843947da9ea6d226a01702ad17856d75. 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/HKG732012611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3138b009f7f10182b48c1c66d06ed5d8241cb1e9bd56f325026a68bd17000ff8. 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/HKG732281132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24a4ee0b0c4a2b1f3448791532330231d830a56c19ba9c51f595840a9d2419f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR59R2494189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2aa08362ca839c13073a46a4735272228d97e14a7efc1bbefa8b61f6d1565ee. 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/FRX452123366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440d5328540b0b6f8a76c06b5a6f21b3293eb41ca2561a1fe1d175020ddfd569. 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/FRX452123367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e49e0539b64c9f1679bd2b210ac233d38e12ef3ace2f97a2e2e3e58fec491c1. 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/FRX452123368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98505155381bfd686b43c50a1a94a3610b8b816b9a8af0b001d5ab35af9f944a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRX452123369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cdd57a563e2fd02e3a652965b23d504cc4d31a33b6f08a4f5a7d0105f741a4. 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/FRX452123370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2eb0a3f646a1e29beba562e4419986edfa28b5e90b3afad9c60db6710cafaa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX452123371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf617ebabdaeeaf860a2103cf2f73076944b64263c5c225396971cb947311d530. 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/FRX452123372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5468a529eef3130cb124584aabdb10ee4c105b29dcd89d8e82dcf1473fb07f. 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/FRX452123373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b166e0deb3eb4d35c036cffaee7051cab5a98f4f57199fd3f0ec86827eff9ed. 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/FRX452123374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8951b59c2473bd5523594a699a95690eeb1a5d05c389c6e665a0f36ee1d784dd. 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/FRX452123375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a1cf1676114ae5c9d16031a30eafa698d96bdb12e6d8a902754763d3a2ee5e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FRX452123376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff410ff7186f591878403fde6c4a5302f33a2f928673c73309c5e5903a2aa5a. 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/FRX452123377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e0f29df6c724851ada0ccfd9305760f6007f375998dd2f9bc2bc656b5c3b0d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FR2X42267126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20636b55ccb91affed36e9165baeceb03cc5bcd440bb290a001afcc43d32b845. 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/FR2X42267127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcba45ad85dec4b5b40024c7a0a2803f8aceafd2df224e5c7e288c291adfbdfc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR2X42267128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9742844eddf140d225d91e76add5ad8cecbacb9c4bc1dee4baf0de727ea8c0. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR2X42267129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea999bc3cc25cca237658ff942f108e893b280517e112b12e9da7533cdd250c. 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/FR2X42267130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977c49ab49db6c21bbe063ab7c328c8d0136d515a2822239807718212089ce16. 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/FRX452123353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290d4c8dcf0da9daade7c44bb75bd1dd67c38a236103ad2b73f795aa6fdb8a76. 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/FRX452123355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7825c21ad56368f567a94e3b1adb23596e9ad8d0cfb2b452930c57d67a0a4705. 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/FRX452123356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc968d64fbd2a260909115b0a610354a1bef67886d54d400b102e37bb04ba70d2. 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/FRX452123357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe980e9e09e175d442fa9caa8a13d0e834ed28f2970ebba38ae8d30f4c8d60e97. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/FRX452123358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe16b46b441a9a79c56dc06abe247ee2f7a658fe64a00988ea8d92c486996ab0. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/FRX452123359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69995d524c5846f9f4689ff97f457c0f490f7306526152c0411180eaec4be92. 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/FRX452123360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c787ea206c170b21dd2463e390797087cb170800dec7235d66c3ecc8adda1b. 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/FRX452123361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb988edc0d5ccdc1eb438f60954e0e44bf6a3c2826e0b4a5a31f67cf21384b720. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FRX452123362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcb27cb1d8f81de16a54b1c6d77d1834386aeeca782bafcc7a45399b43c0325. 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/FRX452123363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdc3bea31053b1fb067559722fccf3e40884662a6fc54a4395b9cd3b98e426f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FRX452123364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fd5179a230d0a7c5b9fbfbf6acdb43d10c8e7375b3f9915c7f829e9792cbf7. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/FRX452123365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0986573eb80412fe151dff4238b92524d81093f525005504c5518c6b81642de. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DGA072457467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9988d6a661bb9c37c76442a836e02582d544324ac789b83734296a3f911c6a3. 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/DGA082350191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b8e843d0d5aec3826cc5f043ee11a1dbc9a1960eff41e65e84709bb268f8a0. 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/HKG732251379.
梁州词（《我为你翻山越岭》广播剧 插曲） (制作特别献唱版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87902d8b6d01a7836bdfb5df2f85acc2e1079420764e56a15d00cebd0166e8a5. 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/HKG731751406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b6bba6c933903795c93049b5bda64e45d768a02bcccb730790c2af0b9ad4f3. 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/HKG731742430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f79f08c70fa9f39d090ca0930312ccf263a172f9f59b3ecd1ad3560947336f0. 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/HKG732140447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaab0af5380dfd31ac244a2e4ff207338df067d27236c96265cb9883ddaadc27. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CNZ701801704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8015ebef0accdbf8622e7dfc07abf20831d4b0f143d7741d90b82703511c0f9a. 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/HKG732501293.