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 0x919bcdc44fa3c3f18b2f49a033e94513e9b6c32dbd295bd97ca890a1b6f04b66. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6756ecf-7bc3-4b46-993c-70f627f5d2e7.json and https://artists.proofprofile.net/proofs/artist/d6756ecf-7bc3-4b46-993c-70f627f5d2e7.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 0x35449c6329811a4b97a356392f980a0c9aaeff9eec735a48f261a1ce3da0fc1c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZB4J1889288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b22e4aa220135c3a3bbf83a5f1b80dd3a83287534b1519d5ffb83061adbd41. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/QZDA61803469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac113c6e445e80ac9ba1a5b1bee41d0c43c3b00fc7def48251a9dd11e78968c2. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZDA61803473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481485efcb37ef627957bd36059f03933c52f49250d53b98f081a42e8125f5bf. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZ8LD1911803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dcce290eef8e5582dc772344f3967f49eea8bd3eaa14cdb8428ead94dd99ae. 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/QZ8LD1911806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf665082cdbd9c126428186801d2101ab5503000736d567f5cfa9c306be84d6e5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZ8LD1911807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274d15ce2e4c0d20e98b35c664657507a1d25315ca43770e7037cee9b03136f1. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZES81833430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b22e4aa220135c3a3bbf83a5f1b80dd3a83287534b1519d5ffb83061adbd41. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZDA61803469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de98b49098924f87603dfb62145b112a5fd1fe3b9c6dba0966336c8b6af33a0. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZFYX2064386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e06cd6fea091b2d6faad49f5c72c440c17681373fea35f7a042ca6a8bc43c8c. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZTBB2205465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5c75b509a96d2d24163865e37f329709932bb52ac5b01e465d65327a015458. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZFZ42457802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb659f6ebc8c579ae8488eefc292e5fe5d900941f07d799af3cb8eb068e5c025. 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/QM24S2407172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ed42950b6a4a4b6691bdd96fce24e7ce8c19ce013a404dc5c671df378d92e2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM24S2407170.
the opposite of love is not hate, it's indifference
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f668fe038a74306f86451bc791009eb34325144c582a6e9d096c020e7f34672. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM24S2407169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f1d1bbc81d3e299722c764d8325e80e94746cb55f90f31829a49772329d86a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM24S2407168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbdb037c70885a40ef20e1826bd6d8250a8f8774b75d76f6e781b8e2581bf1f. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QM24S2407167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8718742dbadb6323c42116ee8bffeeacebf38dadc0270b2138ca9fab1c34f3a1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM24S2407166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21b529d6e1c75440dc9d975610146598c7054a8727ff640e048dd939611dada. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM24S2407165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998a484f4aa4bac44774cb212221032e894d608110a89bb3b4e2df5c4ba8ce8b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM24S2407164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7df3e56c704047489a5a0c832469fc0568f07b9071e231affe034ea56d5dd39. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM24S2407163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923493ea8957b6c85b7c5ffbad2335fc68af48cde1732493fe6f3b81b6a65a9b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM24S2407162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7516503defe9050c0a99df6d4ef6c87b861d5a1011285fd3c87f287452ffbb1. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM24S2407161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afaed5b41ceef1b1c61a51e4cbc13396c8e4521addf6d57089f667376eb001d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FR9Z62000244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044ef82757b0db1a992e088c1f3d943697c25cdfdb5498ac7ca90a24e58f4883. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFYX1945748.