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 0x7f7cfc82a33386c991c4f0688cabe98bf3c207ac9a8b6d6f6c40b6522bbe68b1. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2bb3ab7-4ea5-4ecd-9d78-678c96fab443.json and https://artists.proofprofile.net/proofs/artist/b2bb3ab7-4ea5-4ecd-9d78-678c96fab443.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 0x39d852fec24573e6abcaae0d80c57d1a36cb25a42410181040e867e3fa2741c6. 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/FRX452104982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f98daa937c114d0c3f66548b42a05e62f4d0d2ba3d4e571ee6134421a19f7dc. 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/FRX452104987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b07b4f74720b62e628d40471851497cc284a03af7a7001c4bc8cfdab63135c. 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/FRX452104988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d937868e48d561a5539967c369eaf616d0110058c9368fd6d906ee3c9c0c48. 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/CNZ781903009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cf2486714b46be60c4a89f1c747d8dde4685ded745ba952ce13b3b01164862. 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/CNZ781903010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb105a1bfa6c07cb4456b3b2d0de3e5284c932bd65d3d8a0092ca6dad150e1b3. 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/HKC371705460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aad6cbf2627aa446fa749f4519a5e800950075ab88a92e0254aeceb6c44486b. 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/HKC371705461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0938798073f4048c8a9885257dd6350ca30aefb650cd5f8598b001420f9eaa47. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/HKC371705462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865a3716ab5516badccac4ae402e696883df2a0ae294f271d5980268a808a6c6. 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/FRX762137266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcd72e37449809814856999008721e396fe41f2abb100cff36ad2e409961d7c. 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/FRX762137267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1060a1ffc2c04a3ba21bc30284ebcfce499868af77ca058926bbc370143f4681. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/HKC371885243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5001dc92e067d8debcba771e65117dfab04736b96fb99a6ddd2045b32ee3c5a. 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/HKG731866838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5670ccb26d9d152b9bc930b23c0e4f46db3643120254c197aa89cf089b6fcf1a. 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/FRX281901835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b588e8f570a331ce1730bd2fa76f5c4f9aa7f50eef18eda739acadd6527c929. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/HKG732236861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3185397351fe8eeb96b9962442e93b8ec3bd600d3927dc10ab4482781760d0. 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/FRX762137286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f0d7348f12e8f5f475af0e71b7618fa4aa96e045eb7d0a5e62281d66f74060. 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/FRX762137287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72961703df0dcd54d0fb2990dec68e972f0aca4fbd2a91d3265931fa112a9b41. 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/HKG732153014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b6fae5df66ff67ad6ff6a78555ef4fb8f4d1b0fcfd5e1ddceb1e29f9a5dd3b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/HKG732153015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa48c819cc7873830287fadb9c79a83c0fa95cce4283b2fa0e0dd6689fbafa4b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/HKG732153016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf869e45c45429a8189188de71718c5271c7388c48e50c3bc15b425bd5e65e5b4. 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/HKG732153017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24443782815557af47fbf02cb369a468bcadb4db41465f933d26fc9e4b02c24c. 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/HKG732153018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57df95764e5f0782b257c6b4139bf42650d4c4c56a08101d0b7092454540a34b. 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/HKG732153020.
好歌30年特别版 巨星璀璨李海鹰作品大型交响音乐会 (现场版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e36c15fa1a4ee8eee944668d8db0fa8f69e94857f6531f70b835f5a351a4903. 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/FR96X2202056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed46564575becb49e9fa181e3e7b6467994aab8628c6adb3233f9ffa9dd1234a. 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/FR96X2202058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba511f65db743a36a08be453cc3309cb8a5f81abc2a272bb13c5e2c94bac6763. 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/FRX762276267.