1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x1fc957ff24989593e188ca04685dbe407c08aef817ea25d029f05944a6fbf1b1. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3a7026b-2434-49cd-8d33-e91d865871c9.json and https://artists.proofprofile.net/proofs/artist/b3a7026b-2434-49cd-8d33-e91d865871c9.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 → block OTSBitcoinBlock must exist at that height 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 0x00786636f05d949b3937b21e3218a6bd04377c6d63fc11c60df3dfb7cf2024d2. 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/FR59R2353440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfd96d916679ef977cd1cdea6a676f24840eeacbfff4a685bb73e6d01440253. 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/DGA0Q2380434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24c3eece4e10b2a77c74195e1a6231aa823e5b6e322925c26d7265265b18bfd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB92589078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8475f59bcc7c7ea1af0bf9eb354c178befb1f3e0041ddf7b12907e8a0628fd5d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRX282374165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1f1cf85b693ad06006320e645e13aacbfc97eb604ae398428afb52fedab0ba. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/DGA052291313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953d511ac186e16ee93048d3b7839cc162fff5d972cf80b2b4c2d85ffe182633. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DGA052291312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb821433c1a37ee6450d230b113bb7f83e032eae77da736f591cbfd90a5168a5. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/DGA052291314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c4adca545d37f2b379b50341a92f0dfc59b2ccd59405470a7cfd012f3c317c. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:39:22Z), 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/QZTB42563576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81038415aee9363848ceeb490736117d0a9543a968d9172c908f2b0cbb1f08bc. 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/QZTB42563578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f070296ef12c37960ea45ba897aa25b223423e95e9dbc49824d0fbbf27ff273. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/CH6542302567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a98713106b74af4bfa9cacc48187861ac5b7d125e63d8a0895c8c0869bbe962. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH6542302268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2053130d7d6ad1fea08a84052cbc8b76d70adcae7575e4e553c96cfef8fd4a9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CH6542302571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ec0124099506a4f28e0b972d66b7baa840bc532f63044403973329c87e7c46. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT6EC2502649.