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 0xc3a9b02cd6be7618aee8df85927cf32b014b0e08ceb41c6e46de4543dc432070. 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/c89624d8-991f-439b-89bc-d45cc2f74776.json and https://artists.proofprofile.net/proofs/artist/c89624d8-991f-439b-89bc-d45cc2f74776.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 0x59dc9aae9457992f03019d5405cce34a6da7c9e4aa9eb9fca79410b3e0840c65. 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/TWUM72300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a14b5620349b7e215ff6afc51f479a465eec638168ec11f0181ae7f06d0c6e3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TWUM72300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b126cd9dd47dda875db498be10d3969b2f79109d050e89fc43e67b4a90e0d6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TWUM72300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dc9aae9457992f03019d5405cce34a6da7c9e4aa9eb9fca79410b3e0840c65. 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/TWUM72300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccd7a2e8f8d69a4864bfa4429e2867911c416a8bcf8363efa2b320b39d7fcb9. 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/TWUM72300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4206821108d9aae5b313d24de24d73f80e634694952a0c97686e4aae414600cc. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:32:14Z), 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/TWUM72300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765bf28241d30f2482e98d150a6743f3db0d371b60f23062ac1ad6cf6de3f428. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TWUM72300071.
羽毛貓 (小公視愛唱歌系列__為寶貝唱一首歌)
时间的答案 - 《披荆斩棘第四季》主题曲
时间的答案 (《披荆斩棘第四季》主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e64541c9f3d9d53b77b09cc55eb8e6a455abcb2a8a5f6258f42ea8774372dc. 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/DGA092416015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da80bc3e5ebdabc82ba65f37789e3b20ab5cda51590e30a923ce34b73cecb33. 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/TWK232270002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da80bc3e5ebdabc82ba65f37789e3b20ab5cda51590e30a923ce34b73cecb33. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWK232270002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf048c99347f204eca0e95163f4d105a35ccd98fd128388fbd72c3974ce9c3258. 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/TWA452415403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1195c43e22652af7b15c9d647adf5c86562a45955e5a546397c5e918c99c31. 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/TWA452415404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e7435de008ef78fcff72d0ca6729c9db20dda87091d4a6e7e9a26d96530731. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWA452415407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbcb2d9b93150239f60e9638634a303f4a105068a21d372609011294c366e05. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWA452415408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9cba2b2c2f4ce8a034edfbec17f29e25c3d01a8c234ffa0f8689259dd0d506. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWA452415411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb917d7c6c675fd532f2e631f31f0800f6763633f86d2001584badcab95cd1265. 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/TWA452415412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4905e276cb851112143261c00f57be58f71634a196b5205e26f51154e0b6b206. 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/TWA452415413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcee1ec5bf5a8bda51160f5f7742559f03d6a841d440b6468417694ed7a22621. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWA452415414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f0baa85f16e09a7cd860993a7ed1b4e193ef38509ef3cf94e076c09d4fc6d3. 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/TWA452415417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc97e68e4fc83a4627467ac282d6fd219dbe07334c077a5db797a657aeb7bf2. 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/TWA452415421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7e1511c9b3e651a46aba3c761089592314e7e01f12b988ce5f3fc7dde734fa. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TWA452415422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f3f664eb8c2097bddddd1c16e97a48bf8bd4d222f949e9ae984be18abedca2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TWA452415424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be664c1be5ebae64ce6da3ad78000721d24c49f3e72d70afa1fdc5521a2e0db. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:50:42Z), 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/TWA452415418.
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
时间的答案 - 《披荆斩棘第四季》主题曲伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2613bc9750d18260746dcb9f574220dd92700ec1b17aca23098c1ae9d52f80a7. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/DGA092416016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9689aa5a594e9c11ae8c1c3d680bf548c890892a05a3c3be06e1f8f0492976e5. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/TWA452415425.