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 0xc5f76561150503ccaac21ece0aa57da7d289d923416d906e1ad3b4769981d234. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90da780b-7065-4258-bc0a-247aa5d86045.json and https://artists.proofprofile.net/proofs/artist/90da780b-7065-4258-bc0a-247aa5d86045.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 0x95e753b1494f00576c1b8bbdc88b641f362a47407e8d390ea8f7d41ebc2e170b. 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/GBAYE0102309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39372327935b1a5c491def0791e5e38c3f3ad216b400749ec16dadb68ba4cbb0. 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/GBAYE0102297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829891592036bd26b600a9936f242e23f1c867caa186e408e78c393c39bb68e0. 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/GBAYE0102307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0701ebb18ce5903e5de3e6f14bbb11d6dd96a4dd1aced8e4efcc4655a0d795bc. 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/GBAYE0102306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e561a4c2eb00dd4047326ce41097978e32c731d96775196a5c698b4c6cb0f27. 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/GBAYE0102301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4862e08475c9337a71c3260c3dc396ece6df34d0035dbf018e07e8902c2a23dc. 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/GBAYE0102304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81af35b36733032246bc573e9659e95d0bd3d83c78f5cdd28b77b5fbc20850f. 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/GBAYE0102298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855ba61c00e3f30b185ff515c7c6b8105e888383a7328cf4bdf4d36e4b5ee323. 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/GBAYE0102299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40922864a00f4adcb60ea75aa3659858d3bafc1a05ba821115533f31e05e8be9. 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/GBAYE0102310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf91bc7005156d3908cad9360ed20b0696ff96a4b444c7da2aa3b7bfb2d43ef6. 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/GBAYE0102302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a1880be592d3b5ecf55e09c75a9f6fc004ea71013f6225c2b69d425c196040. 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/GBAYE0102311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c4b98a99e33c3713989319155a5685bf52a5238cca156ac8ad1609cb51aad2. 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/GBAYE0102312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fd08c50cd277e0e7a1addc65a96de065071d4226dcacc7c911023ec1a91624. 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/GBAYE0102303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd9ab97877a69bb4c8fad7cab4a982ca033b1b04081e005f4519c49bf3f9dc6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAYE0102305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad6d43e932dbb6201d68b72d5194a7008e7eb3fe8fe8406ecef2d3c04867e81. 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/GBAYE0102308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b2c819986a4ff4b8b2a414945dad946739fecd7dad9f605f8a6830f58aaac7. 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/GBAYE0102300.