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 0x7d84c405db688dbfd3231faa72a9951c77b54ae449791942c6c3c01dbed03ccd. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/519024d2-d524-4a77-922a-62f76ff3ee28.json and https://artists.proofprofile.net/proofs/artist/519024d2-d524-4a77-922a-62f76ff3ee28.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
あわてんぼなハッピーバースデイ
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 0x7f22010b33c4caf5fc1470e19aacbabad3b7a21212b94821100c25fde5058a25. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/JP92Q2301095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666edb1bd5520547bb822f984bddcd61c3d8155c817c03857ad67349dfb7515c. 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/JP92Q2401238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934bb763fe43131fb3c8bbfc563f398f404efd3942dd6a86d3101195962351de. 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/JP92Q2401239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f212312d331dd8014fab16d7f3169107c088bedd4f458207026f186d0cd6668. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/JP92Q2401242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa125aebc39e18ca30051c97f2052f2d47b79cde40d9f3d9e4368b65f5e1f273e. 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/JP92Q2401243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa64a33e7a6a6766cb86a8041d6e833103a0ef8a2cdb9e5dbaaf6dafaf79b6df. 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/JP92Q2401244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b468b8367ec1bb6d2685e77fd7e2548538122ad00c46ee2ebdfabea3711ead3. 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/JP92Q2401245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea6186622e37ef705b0117b030cfe8599358817ef456f82759ccc0774c65b57. 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/JP92Q2401246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01a8904a15b62caa26acfbaa5855bd339c1cdb802e8361bdb17042a8cd89423. 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/JP92Q2401248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e484c7fc030b6b86a79976dbfbda360cd2da8f79574226ffbb20da68d1cf05. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JP92Q2401241.
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 0xc9256376fda5eb43ab6731a78b5fef5163b9b5dedceba48b02e19141be6db43b. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/JP92Q2401240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf8fe14c891689cdbf363948868025157bc7cc1b20f13c7f4356bf8b5b51713. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/JP92Q2401247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952ed92c0fa6acf072182d790024e80f37dea1acec3a6ca639592314c37d5f24. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/JP92Q2401249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70005b29b8083a8ec8cdd4ca3b3333a7a12945d681e18403120f6ea342a56aa8. 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/JP92Q2401250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3284edfaddd29d8482a41beade7dffb7a6acc4b3f89bff7d32a592ec02dc9cbb. 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/TCJPK2531662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a27ff289181ce485e8517518525f61553d8c1547bc50b96b4cca35c74fe0466. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:02:18Z), 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/TCJPI2526499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a27ff289181ce485e8517518525f61553d8c1547bc50b96b4cca35c74fe0466. 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/TCJPI2526499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a4f355ff320c6ec2010e1a72fbf12624a3802cbb6fd8716df7dbe889133bb5. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:01:39Z), 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/JP92Q2502545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba90035d8bd507d87e79acbfde99fc6f4d31db51fc7b924f0f6d23d05835cf4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:49:54Z), 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/JP92Q2502546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b41342601ce8ec427f9b8d80234e0b12c9617af542ebce207be1c6dd41f907. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/JP92Q2502548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59de809e8f7dd8592efd7d4c36368c0783686708a64d65c21725fc6cd22affd3. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:30:37Z), 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/JP92Q2502549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137e5eaf3f62e73fd4645f02369897a226d9779187c7040a2e0215abe5c832ac. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/JP92Q2502553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed9f4c3161921bfa421b3fc004728211ab895ac07f5d9dc0271790f10ebc402. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JP92Q2301662.