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 0x63e71f344fe87e12a47857600b69ff8d8d166935e3f41b84ed15960b8e28f3d1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5452233a-d094-461f-bed4-1dc3b1fff7ee.json and https://artists.proofprofile.net/proofs/artist/5452233a-d094-461f-bed4-1dc3b1fff7ee.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 0xbe1f00197aca4b99cf6a5f4c683c9957c5bc270a42897bddc0e9871bbe5d9447. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/TWE870403101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a4b23a1dd42c94d4a3a363dfae81eeece8e1d78717957bce9da8ab615a54c9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TWE870403104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c4db60ac9efff75f5734d5e05c3474cc85f6f1c7dd9261ff189b3e7d91b928. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TWE870403105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4ba5aee7d343f77f4aba781fe46cdd77e35181da57496f10de7af49a36bac8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TWE870403106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6615a07f45b68bb76142a751a277a087f31b7d7fb49f2febe32dd425bff28828. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TWE870403107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13067c583de20c08db7d38236d91dbb5b4275058a1cf67134672da68b36bf7f5. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/TWE870403109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265ddac5d7e2fe8a483bf9081582ddc269affe437992781fa03fe95432430861. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TWE870503205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78536dba6f43b0bf862055710fd7047335fc72787d010547cc8900b3bb5bef86. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:05:23Z), 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/TWE531420502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615a366e1c8e10fc836c83bc8ef1b678f17ca28d0d9ee5af8c995700ef2dd03b. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/TWE531420503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccff02bb7543916013d25e1906723eb2922e246e911eccba0d6c0a67c470c0af. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:56:13Z), 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/TWE531420505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a1a65e9ea90892cdbb5a6a09069dfdf617da0c25d0d14810b15f8bf83b52d0. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:52:58Z), 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/TWR131606702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13a0c8caecbb579b1a98b4f5744de82a313a2d193e9593a4003865c27337b1c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TWR131606703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19373a55f86f2a929d279de795f3cbb035da2ada7a275ac1d25a745b031d17c4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TWR131606704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbdb83cba666fab020016c4b6a86ae87c9426e50e7d22141dfd0eedf531c8c3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TWR131606705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f008558a393f73f3fc5481bd14325689df9cd3da41af16ae3387024b805696. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TWR131808103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac249b4328d3b38371aaf882ed43d519805432887a78917dd8b1302eb93c463. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TWR131808101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712e78de6647ddfad23130f6ebe7466bf9d55e076d556662ffe7901b7aa59dee. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TWR131808302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7331a326bfd811cd7eaa23e2cbe4b9981ebbd9d8f81bb7104fe0c75bcefa20e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TWR132011013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5192d7507c27bcfed837ca6891cedc1b537e8da7a6b49afb14fc304840d7c8a6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TWE532120601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bfe59e0b00d6ceff5cd25bffc0712e5f907e5d833dad67123e513f2d434f7a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TWE532120607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c722fc9b2bdd2eda693440286fec6a870a829cafab0cd7c027a3d1a5eb01bb1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TWE532332003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2c0037bfb1f20eab122222e0755f4b5a9ad57e8a2557fb33042d81e7ae3b25. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:00:09Z), 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/TWE532432201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a0e0394eb7b9194fee23c774cf18f4ce83e0ebee8cfd772622d3a990da5ff7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TWE532432202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72920c55c045078c8fdb2edc3699154e4e285477f357726f148057abda3a342. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/TWE532432206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5469e4163a39e29c94bd0161fa4948309f38fadaf9b443e36d370774fca435. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TWE532432207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c50b1a9f9a74f4dbca8b4669f21cd50c8af13a9021a6048738ff3d9e4a2298. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TWE532432210.
冬之火-"九重天"演唱會特選錄音專輯 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43264cad1ba11304fd9f25de64905029cbc4a48e86a0aa05a4050f77b2032e7. 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/TWB870211623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6c106198c1512fbdbd3119ec31f07205ff054f5fdfdb7a87c44bd299dda24c. 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/TWE870403103.
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 0x01d347d50acfacc666fa4ae709b72e66fbac1d49171afa5077c5c56c5a428570. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/TWA211327902.