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 0x303b09ff27f98b25883700d97c86c4cd8d8a70468ca8979086f2e752239ced30. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4446bc0f-de51-46c6-a779-8cc951d07e37.json and https://artists.proofprofile.net/proofs/artist/4446bc0f-de51-46c6-a779-8cc951d07e37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x9aad99ab6fa5d4c7c4f7a9a42fe5ff48d64b12b9455880b09895056a474bfaf0. 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/DEU671703672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3454e720748eb22d64f29404ae12341e2306b3e03c158258761a1bf03d64af. 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/DEU671703673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38ee5673ec110045f31604ca0731690806dc3f27f0066dc0e6c99f7bc0511a3. 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/DEU671703676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe993a61cebcefef8f25d05b25a85c57779755e1c8a068c417ea5ad4522d25bac. 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/GBR8R2100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad9f320b1592fd6a7fa0339e3c1ac3449aec9c8b925260b5d6f1eb3467bff95. 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/GBR8R2100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e81d335720fdb94a4acbf258030996d06af6a390e3856fbd516d5dd649adcb3. 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/GBR8R2100213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b185feb95f97d033abc3849fc90f268b03c42724133b9cfe439596173d0f7cc. 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/GBR8R1900386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37adead9e17c9f3ef168462f81d8bb8051338d930025f8bc115279b9941592be. 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/USA2P2027963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e51bdfded6c0b7e3faa2967453cfc5a4303c4d1b2c2bceaee2f1b466e317549. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USA2P2027964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c9d22934d8f2c775109b2c95870850498f5d0f492342ddc5e78a81dbd4e429. 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/USA2P2027966.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c5823eca1e25712b1017f1c0ed47f44f3fb5fe999a94cfcd7cf920fc8f7039. 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/GBCT11200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32fc2992a3829eedd3e6c4a8ebf4a349cf37d16127d20bcd28efb68adeb3a6e. 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/USKRS0337306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e9ba6919639250c263bd52b0daad7e09c8e5fb4d1dc41c060815070d2cc5ea. 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/GBCT11200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bcb12136ee79c5f925b0c38b9915bb470094bb54effc1fb9181aa338366624. 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/FR6T50300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f1e2b66c88c606ae05640eaf3aa2f03837927283cb38a9ad60e9654240c757. 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/GBAJH0400871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2806feb08fd42da92e1aaedc4f73864b0260dc9b117fdab47e0d059d4b835d0a. 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/GBCT11200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6bd2ed4c33e4186c1e2484b7f47ecde44320fc30b3c08ca0465b7976c66e8e. 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/GBCT11200010.