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 0xf69feb73c2a80e57c90b0291cfcf404651cf16df22fbac951e92ac49d4122479. 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/5ffea4a4-8630-403a-867d-11033b054cc6.json and https://artists.proofprofile.net/proofs/artist/5ffea4a4-8630-403a-867d-11033b054cc6.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 0x4dda3b02922ea5e60246009e38df896bfd5bd405e2d9eec0881239fb6e8ab5ec. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKD012380191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d4fb4dae524f32077edc9fc8751b704d1f0fc5566a82fe97be68b83219bcbf. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DGA082419074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac3ee368a11378f259155db930e5f0001fc2862fec132fe50dfb5059387b7fd. 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/HKG732430796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926c9b6c05fe674668d4d0f8e54d652299613c06794b9f9757cd63ee834859ef. 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/FR10S2360334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362d62816f5ec12c5f2266fea9c865be56957572bcca95decb9fa6ab9f09210a. 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/FR2X42371521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fc18bbbfea0783b987a6e8c891b47c7e7bd6ec1f32cb88d34178b2697a2739. 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/TWU712205655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95daf8825303a174d97b74a29a210678637e75dc7c4ff1aa2fe9d0d34a8f43b3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX282227562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36737978e281decae29c30790e622ab73ba0570f4c877e21850b0a904cefebd1. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FRX282207116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c90d32c288234541c19c9eb8ad370f0ff69f11c34350ec8b096ead40b15188. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/FRX202288451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7c30520f7beb7b972cb9a80c216a70e98d1cdea3b47b0ac88964bb2cdd6a03. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FRX202229343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6b377b6a49f2c61d0dd121aa02e31babb912d7781b7cdb476525ef5cca357c. 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/FR2X42279273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0c80af99ec0fddac702e3624dfc8fa59c6246abb3c6800d0837e0d4dca25b2. 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/FRS182146022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9041aded844d122d67fa8a062e4a9c170c4eb99fbf38c5858ed0b26f50e16a21. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/FRS182149963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb96074b972da4eaf7a824c0174cebb88a03229e5f5ad10f92ef44c3468287d. 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/FRS182149378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7b3a1c7f8ed64f67799a410184ce5902638f60def1c333c305fa27fcc3527c. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FRS182149379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108f26fb4586488ba5ddf62769735b26ee0d57665902ff51ab5306eb930c2b7a. 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/FRS182141453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad0fca47aa57e5b9c4b791aead2ec941a1bd85ae88ac8a452af386352ddc2c3. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/FRS182149991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09e4df23338fb7112dbf302ea68d9d61c36d72d3a00d6c6ee37d866732b5ea2. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/FRS182149153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7976f18db5ffdce54c0b688c481676a2b3d6e30338aed38a32c6e4d3ecf87e. 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/FRS182149142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8e46cf6d65b714beb109ab69bec11b75ddb107bc229a878b98c6128d43b49f. 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/FRS182152125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e453a0a83dc8c79924df1c6a4e7545956088015ecdee98f328058d74578a0a. 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/FRS182149944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a98fcc13df92e792883eebe4265cf641083b7c5511211f6d87ed3ef537cf44. 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/HKD012484124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9175c48c713c6f52ef79872e79b0e97f7844de4860341b8d0429e4451942949. 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/HKD012424182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653aaae0cc58008ff66854bc224e75e374c5b6d2441bcdb7dd1bd0992c05145c. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/HKG732341579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7366a0fa7dd41e97d749c8e8cdfaba829ef9afa7af85588387cc1cd6a6ae1a74. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/HKG732326311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814e0ca5ec3650918bcae9ed42e8ffe851e5aeea64aaa1c7c5d3e4d5e895a3af. 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/HKG732322438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaf43ef1c908949fe3fa00984f8ee8ed64e75282d9cd9022f490b25f4a51186. 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/HKG732322439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654d35b6a7908b09bb1e56aa531d04a47c85798787df3b44ee07f7b6cebdf494. 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/HKG732293373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71379d029acea09ffbe1ab1af0983e4815ac808e4d0e9f39b0c3e472459405a6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/HKG732285328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8518c5818447d3fd33bfde50edea407fcf772a324468451902cabe8aeadd2902. 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/HKD012377603.
永远伴随你一生 (你是天上的一轮明月)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb190ffca735dc661c37d7a58273993ce1a1ed6b32c7612dd22db9697701661fe. 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/DGA052503040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06137c52d48833f3b9b510e0fb024a8376d002698e6d10161fb0bc811cb30ed4. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FRX282572403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c3a35d40c84bca28bf585cc9263a16e4b94922127d62f8d8da55dda3d50781. 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/FRX282572407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15da2bdc02fe12ca46b7c014cfcccbdcf86fd75f2376ca29c34c9456a8588908. 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/FRS182146066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21edfdd6200c86421364934eab72d0ae52c32729e3f0dfe1a5f85579f2804667. 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/FRS182152178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c893adad498591b3c1aa8b743d38f480fab96ac0d7295dd57764580cfaeda0a. 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/FRS182152179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378ddee3874ec9cb4dc1a999e3760ffc2a3e41e1e8c9274f7bf1437c8e720cc2. 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/FR10S2255672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a5481e0a51694f2743a9c272877e217a98ef72519ada2c9b9d8b82ec67a753. 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/FR10S2255675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a44aaff43d435dfac33f02e7e366e7e18f4d4d8b82e26084a90dd9d9db53411. 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/FRS182153524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc90616be60817a3a3b74cfd822ed24ae8a7913e2f783adad0d53796b2fc72f1. 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/FR10S2299013.