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 0xcd258cb6cf904218f54ada0739a845c6c2bc6ae55cbca9d51f4cf96a17117049. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/decb2c3d-241a-418f-b7af-7f17ab0daf01.json and https://artists.proofprofile.net/proofs/artist/decb2c3d-241a-418f-b7af-7f17ab0daf01.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 0xb0b65a25bc1ef5a87a0d9c7bda92ef1bed3a21e8eca5c374f8c50792d98e972d. 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/TWK230700801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0462288914d3bf7dd1d4449e67980a60a3b3fc7114ba03a78dcea5bcedadbf3. 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/TWK230700802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39fe094dcba50d8357bf1b1a9c705f96850211583163a2320320e09624010d8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/TWK230700803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c27aaf35789cdf14775dc1dd155abab8a7efa27fb88d55675e4d3e9e315a34a. 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/TWK230700804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f6a2541058f8b32088087fda799b5e0c4f56c07aa542ffc269094e4c4e9260. 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/TWK230700805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3981c0d05e8f88c8a9afff35691b250d972ebd0cc07d7c8cebde6406f27f6019. 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/TWK230700806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3117c801c7b3f017aef5914f41b033fed75fc8e6ff4bfc9ca0857112b1dd2e19. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TWK230700807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04443d60695417467d5ac9db50d875787c4f4fa68cb97a43e7366a7a7375367. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TWK230700808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a96f4d4f87fe5ca9c8363f58ad4475bf39f00bb02bc2bcf4961b3d027565e5. 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/TWK230700809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0252edc8e6fd2a79c31988c7def2dc84ef398cdaa865108eaab7e2ccb4e5fa83. 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/TWK230700810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afb9d8686394f4051f75c5d3659892da742e5a10edf9ec5287cdd95e428063f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/TWK230700811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cd5fc0f317f29103d80a3874dd5642f59dc300bbf672d711ce245f9756db4d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TWK230700812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ab421c4fe2c8a00269c883b26706a5af5ff1cf5bfab4b84c5aadf0fb2fc0fe. 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/TWK230700813.
陽光希望愛 (大愛劇場《生命花園》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbda90c2551def489e387f63447de3ca1f764f2e4f03bf0a11d3f92ff253b12. 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/TWA871201101.
愛的微光 (大愛劇場《愛的微光》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ee16b708b629ae613b0dd7c12dfef2b44f753efdb42bd8f24223370afda6ed. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TWA871201002.
愛像日頭親像風 (大愛劇場《心和萬事興》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14023597ddf2b3c5a2824626c2458238b5d2f87d31c2bc6cfd66a6cd6247f074. 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/TWA871201003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ed76d46c9ed73f2c414ddad45af4d748e65180ff89a1100a139a5d20c082b. 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/TWA871201004.
微笑的漣漪 (大愛劇場《幸福好簡單》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aba9182d1695bf2d8d74b93a2b23ef1d69c1a2fde60cf11ef48017416bd894b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TWA871201005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6594715556549fdea22a076e6502336263d805ba871cd932572b9b64e0bc9e2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TWA871201008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe65ceb6b687b6674ae59420a22ed5eaf69930fa043f8acd7f5785720eaff068. 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/TWA871201009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165d9afcf61843a49e89446adb2927a348f0f0350dccdc032515bc232f6269a6. 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/CAENV2044702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd41442edb1bf09c5b162b70e617e5341ae487b5e420f715e33c9fcc36a7158e. 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/MYIC12515003.