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 0x0463abfc5922e203a206c815d6f148d1ce01574df7c1be45c45ae2fcdbb08f2a. 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/9e10bf1a-e20e-4801-8b57-826b3c2c484f.json and https://artists.proofprofile.net/proofs/artist/9e10bf1a-e20e-4801-8b57-826b3c2c484f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4357c5183472af182609ab653f63f0766b256a546c6387e4980d2fc228890d. 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/LTG622200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8284234cf33e54cefc727b7f6189790845be791623b15f8e4f35ecc59c5891d2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LTUM72300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8400214eb87572233d1c2bf2bde7c810a517c078b3897e3f1c4071cbcdf570. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/LTUM72300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987a14e779f4c67b9be7ac7a8115c8204e57babaa8433a632b1071308e36ced0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LTUM72300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21309b17e6af78be1c94999a158e004d66bf955335c7c6abb3b02a065f1671ce. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/LTUM72300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885be2d4294ebae5e447d5491c638dd66ca30691503e11800fdc94583c783321. 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/LTUM72300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30063b5583bac7f9e3a90d0c0478aaae6b4a73f458b9c1d26fb68e71b4e98e6a. 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/LTUM72300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dbb69a22ff7a5349ad5654c9d39c8dcc6721525bc29ed59d6632739ec4a371. 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/LTUM72300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd8bd997c6b137e11a13242f60092b2f6a0e787f68e7e8efdb02fc706e2d900. 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/LTUM72300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5e27b2658f7233a4a761ee110b5081d1741eaf0d41525e42adaec07cd1008c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LTUM72300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef8477bdbe6309198bf8a812aaf3e6de18f3233c57b4f0f091132c3c95c399b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LTUM72300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a46c8664e7687c1f14b157196b2a741a412d09a20d85bc336f812ddac41b33a. 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/LTUM72300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aab9c7acd446e3a90c71240b56fc86b0c275c417c2245fb5c416fb570e0d507. 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/LTG622400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa4cf115cd8132858122771c863c809dfccf85d50b1ef6cca245c3218234aa2. 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/LTG622400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ed4667c6dfcf6e539ad5cff146425ec9128577fb2b3b0ea22f4c935cfcfe91. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LTG622500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ecad10518e4842c9d5958d178da68e59b5b1bf22a3b7512316628384b30bc1. 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/LTG622500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fa65c3d6d5312eb8eaac5a77da31e15457c0345377ec2731414620dde4b2c3. 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/LTG622500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94d29b051a15e3c4d3cc163cd02c33d652de35e22a05909993ff1e262f5cdaf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LTG622500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e28f155ca8edb476a8a98896ef453968a5a97ac2eafd24f92a0985e58c93f5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LTG622500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fad1cf79cfe89cb87680f2b6332094f0d4182e45f709fc564f7980bcb7c6b5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LTG622500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83471050b9b904676193ba66f91d3b793583cf3d1856483d0a90f76370452aa9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LTG622500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aab9c7acd446e3a90c71240b56fc86b0c275c417c2245fb5c416fb570e0d507. 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/LTG622400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa4cf115cd8132858122771c863c809dfccf85d50b1ef6cca245c3218234aa2. 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/LTG622400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8400214eb87572233d1c2bf2bde7c810a517c078b3897e3f1c4071cbcdf570. 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/LTUM72300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5e27b2658f7233a4a761ee110b5081d1741eaf0d41525e42adaec07cd1008c. 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/LTUM72300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8284234cf33e54cefc727b7f6189790845be791623b15f8e4f35ecc59c5891d2. 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/LTUM72300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9e909d6a88b5dbc193928501f81618d907377fb695163bd8d46fc213fe6393. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/LTUM72300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82162c8db71d4c0c6860867d413fd87d8892543b067a0713a1617d985acd58d6. 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/LTG622200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f812833689d83599df645a23326780d222843a3ff483f0484a0db1723cc4aaf. 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/LTG622100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4655cc7921a76af024dd74c1d8cb3eb786e6e2d14e8a56bb8b22a05d3f74d897. 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/LTG622100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7b9f32acad4d15c6076ebdaf22450d1eb9cb750765aa86d72b34ba88147e03. 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/LTG622100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec85d83fba0115a75a8402a2056bffc46693cb406d0c9eb9d97a333cf92ac2c9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LTG622000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4328bbf2a12d1b2acdb080ffda5633c420efa6182e10a63f8c5909db91ec477b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/LTE802000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028912504126b3db6210bf6c3eef01a64312177f2a2281d31620e45981dcbb11. 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/QM2PV1888847.