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 0xb7cc2813d7c448ca8164594b2476c26d9fcf3e1d3a6f1bd7bb06091aea1357ab. 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/d004c4a0-ab79-4f6d-9f5b-c32873f805de.json and https://artists.proofprofile.net/proofs/artist/d004c4a0-ab79-4f6d-9f5b-c32873f805de.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 0xbd200c2a6b77a53c1682e9d66b8bf6b34d0105b7fe2cf2f9bd3bff5fa96201f0. 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/QMDA62482904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bda45663e73828e77cbeacd55ec9a2873262d482437563ec43e6278a25781d5. 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/QMDA62482905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600cb386e38d5c5e9c71f5c71dd7605e31a600d57c28a23a39f78267f51becaa. 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/QMDA62482906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0f4c7c2e0aceb1b168a7a56cb458ae1c0677c4d5584b28b792e9bf76cc9631. 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/QMDA62482907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38b2533bcc614402781c098bb0a9da30545b19a67eab33d075477015ca54db2. 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/QMDA62482908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d454f7e6ecbe7b86a6d276b3953c872b589033d86436aea7d55be2d0924d34. 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/QMDA62482909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05033a341f68e7b782031841a1ea00823100a2c8841282f652c09f070987a8a6. 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/QMDA62482910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab123e00eee516b5cfd6f594f6374f2dd4aaf8140d5df7ed4fba2f71819595e0. 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/QMDA62482911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6e7f3e6bbedce580987d50d466ff0c944f11bff32d382939506a42acdc5d79. 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/QMDA62482912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53afbe61e07efa158c5e65fd09e75898e419258443cc7dbe49157b7a7e8bec99. 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/QMDA62482913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272ad6d3ea58f87bda5294de3c9888fede98d6363af42c4bd4d663400ed752d4. 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/QMDA62482914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9084abb7ea7a119c93b263be1b0dde8df4f7e6ba6c552ef0dd987e474a8ed86c. 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/QMDA62482915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba3d5e21e550b871d372b91596193d0a3b1be98f497f8e877a2f070563b0f70. 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/QMDA62482916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cff06a7d72dc712d5448971266c25e7b948e54d253072dd6a3af879f8d877e2. 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/QMDA62482917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa421e0fa736fe6204fcf7523591e869beb9b2f032d4e136a2ab27828b5e6b91d. 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/QMDA62482918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc37fd05fe9e8f0603475b94d2c008e57d7d3f43fa7621d768747e23b350c3f. 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/QMDA62482919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15fe6bbde9ebc5c958ea02e30badb94dd2f2ffc9edf5032c219de54a773a0f4. 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/QMDA62482920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae37e8c34a0242902fd46b62bcfca61ca2021ba0c9d0f8141e3ab187eb36362. 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/QMDA62482921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6af57d559f0a78c6508d96be16d528fd32655dc8468430eb60946270abc57e. 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/QMDA62482922.