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 0x9deadc2e9228c108573a42dd4df5068ccc44a1527b6ec56cb83a2f50e0aa3022. 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/f0ce5a69-d488-4c0d-abd8-1c3561755de6.json and https://artists.proofprofile.net/proofs/artist/f0ce5a69-d488-4c0d-abd8-1c3561755de6.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 0x90499cbcde83f1f2e5c1516e2c6694e3d060dd3f1a37e2759ed59c0bf9993e4a. 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/QMGAC1900259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08ad44cb6bc2a19e40f938e197a7d5cb5637684e3aab3ec17a98eee2c67fd9b. 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/QMGAC1900260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42e958e2d15a71c9ec928d31d97667f94c197e4546446a128572628e9737834. 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/QMGAC1900261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3de8b96d20880d18edbac938a1d83639610be3ddab997653041f6db6164e68e. 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/QMGAC1900262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97e74dc348803e2b550dab641507bd8e76c8e79fc38cee79257d3bfe7fa93a1. 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/QMGAC1900263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b8e98d20a71356a7ca70dc18e9801689d520c6cf32a156dd198e0f31d80ea8. 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/QMGAC1900264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ac7e71e9eeb3e20fb2cb22c2a099f5215279876a1add0725708a0903d68ee1. 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/QMGAC2000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbfe441ab7f8c4557d074e46e013f2f347ae966a4f4c862ef620d5879a4fb1e. 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/QMGAC2000151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc465af584f75ddb1bce157be6845238fdf332758ebf3ecc6838aa03d1657ec. 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/UKW3Z2301382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245b9020da207c5bbc3f48d0dda876c7c40de131a3fe79fe7a47327015ba87ee. 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/UKW3Z2301054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5134cf7cf37f44807534fba1244dfe869d710abeba7df15cde4dd6541ae68d. 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/UKW3Z2301379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d08de054a3c445d50183e63788af4b9f38fde400fafd93cdcab44919ff11aca. 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/UKW3Z2301380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c8fcc59c103b0ed024dffef67c19441d9e749ee3ccd5606c290c54a0e21903. 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/UKW3Z2301381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc465af584f75ddb1bce157be6845238fdf332758ebf3ecc6838aa03d1657ec. 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/UKW3Z2301382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e1dc182e611c0a542634cc7c13f79745c6d5a772ab23ec67c527a135809d0b. 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/UKW3Z2301383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64767d7fb24306dd19446f091deffa58afd8fb0ed44eca85e1baf68aac09c77d. 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/UKW3Z2301384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611b2f07a8ca03333212e8664d3c344ce2b036d09f7718694c049afe4899f4ea. 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/UKW3Z2301385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c90294403fce1d1f1607edad4f93881ed481cb9641845d823cfa61188ab3a4d. 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/UKW3Z2301387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5134cf7cf37f44807534fba1244dfe869d710abeba7df15cde4dd6541ae68d. 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/UKW3Z2301379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245b9020da207c5bbc3f48d0dda876c7c40de131a3fe79fe7a47327015ba87ee. 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/UKW3Z2301054.