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 0x7350c0621cef8e3d183196c8b87fced0636951980e87974ce45b51fccdd13711. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c086c2a0-1753-49c1-859b-658ec26faa0a.json and https://artists.proofprofile.net/proofs/artist/c086c2a0-1753-49c1-859b-658ec26faa0a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
S.O.Y (Stuck On You) [Chinese Version] - Extended Mix
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 0x078c978a9035f64bed5e8aaef68e3bb184d5d6177453fc6d1d63cbd397b5851a. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZS642363255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d02ab335928acff7725f264ab30d320a2654d0ff6421037e5476339e7175f0e. 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/KSA012154523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e68ad965bf4d8c73916ba83e0b783b134980850b8cffaa3eb9e3214060959d. 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/KSA012154524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5369300ab8fe54c105316de0ca3da763a9c5e07c896cef90e8bf62f5cd9aeabe. 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/QZDA72435694.
Feels Like Home (Chinese Version) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c55b508390731a5aecbd4e8e1609ee6540e3dae423811eea1fe1073457c7217. 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/QZDA72435695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac21189584c503fcc00d8a2ad1bdaa26a2656e36d5879ab33567f861b081cc5. 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/QZFYY2466534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668161eb0f0bb85044b36ff4680752d120e51fede1cea645c9f3559d902f01f0. 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/QZFYY2466535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee9a0db5b34951d95120cdc70163e5fe790ab1c27cac1ffcbe16635a5ff3e58. 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/QZWFE2371550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4e90b528e3c27f72a5ff7a5fa0482f4cc9ec5dcda2f3a4a54d344cc5432318. 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/QZWFE2372189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aa63687e0874a0a2cff73af6786bcab58fecde3bfedb9c48d11ed708da45c3. 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/QZTBA2365578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a18e3c5a7aee1fe0e41724d22c0ebcc540994910f176c8e9d5eef12b566233b. 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/QZNWS2302524.
It Goes Like (La La La) - Extended Mix Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebbf23a6b12027bcdf97e89142661df7aeda40a678449311f8fd831e24ce55c. 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/KSA012243794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba6acf812515d6ff2119619f75b49d90f299295e1475d20ec01758ed53aa54b. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZMHN2394100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab71ade303f1fc1020c5e3ce0c000e51528b229bf1ae92c23e07030a1de82df8. 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/QMBZ92273780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510f721a03ac85b3a62db021ace5675f90f2aaf51b4c726778e16d3fb3551e29. 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/QM6N22256095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f84ac988abf4e328a54d412c74fd01cb0d568a1e9dde156b6eb2f233bebdb7. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CH7812222613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa196866cfd219e3716172d64652e65b11c03e62a7cb7e03e10a4e8fe66495448. 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/HKE672200318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f93a6d77ad235125263ef21f953005786cf3f8981eb0a541a984387d33d8988. 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/HKE672200319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400f4685641abf9ee721ad3ec333e035781f21ff8edcf6c7b2554191159518db. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZQAY2270230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7b3c503332406ab164e1f4909442dd79f968cdaf65f8f57fa4d716d931f40d. 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/QMDA72165733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6aae291c985d7bf16a21f56d1d65ce998fb9d25ea64a6196a706403b35bbc4e. 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/US83Z2127621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47afda8f2d66f3855e144671cc9add97f3ebdf3ed0a1512abc1213fd4eaab64. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZS652191585.