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 0xed37dec2aaddaf08839b9e438c5c00a5b7a7eb5499d47739bcfbb3b0cada45a2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca64e252-1a75-44dd-bc61-620fc8324479.json and https://artists.proofprofile.net/proofs/artist/ca64e252-1a75-44dd-bc61-620fc8324479.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 0x52c9b839a69ef274407edebc8555d7c83c816d109cea2d3473f39509589b3ac8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCADH1712868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9792c9f64203f65cc3de154f2881278e3aba30b6ffdbd12484ae241c78d5330a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:01:35Z), 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/TCADH1712869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6988cd2d55d477f6dc65945c8aec2586f19fc18db1b0f3f9803df5502761f7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCADH1712870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1c716f1a046966dcfdb5f7cdc8dee533a45a9bde50c5d1de7edf1f84a3d550. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCADH1712871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a4ee4f0202f88672e86415eb79a7b2c7b4cb33f03dfc81a01a493e66ad8e04. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USDY41658855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e4adef1de1ae4c64811690a412b43694670c4c5df4c2ad4a708d91eb0e3047. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US3X51841301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8843778dbd227686bf2fce231c1669407884232d37a5b73a8a6f6622adc5f7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US3X51841302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c23ba51a0a0e9b01d28082958f0316f6ccb1e799b50d044160d73f6f1a2b5f0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US3X52043101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92d336e7c0e65e9d6e820dcaecd4225ba9bb999238eba70b608392ebd5b39eb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US3X52043102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2861718b660eedd944c0eaae7969064001328903c0d1f224aba6d3d27324225. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/US3X52043103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724801ae4deafc8a3f2900c04acea6cfd9c49bce598eed8a82750347567919a4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US3X52043105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663344e86692a5a64a45521a14f68db81330504e8e038c4a840b43adb05916c5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US3X52043107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9decc38d13ad43145089bdb00abf03292d9d5a882d600fddb476db0d975d53f8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3X52043108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065f6d9243578c08b78161f5bd31d34e25cb0f6432917cae01112394ba7d5749. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:58:10Z), 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/US3X52043109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90739fdf43da353063ff2f5784f3aad7dfe8d1a76b2575a1b0c9b32cae140701. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITH712000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019b88d0e3cdb80b4cca0373292f6c0fc675d1b5b0e53ca80d78600557b1bb97. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:59:35Z), 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/US3X52146702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838e8035c450ed0fc498c659f8daa499075ee78ce94aa6044beaecad3aa2169d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:02:34Z), 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/US3X52146701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4ef3b9c1e6e1f78994cb7d78d184136ea3ed59858dbdf4cfc23e14f58abb9b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/US3X52146703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2a33ed0030f73effafe2035e74d1e6f2023420f2244159ba195587c7f65ba7. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ITH712200138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039e383cde82354406db78913b010ac2b67cd0d44d9bd951221f8b2aa3ee538c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3X52248404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d7019358a34b2befc098a17891dc96157bf657c8e7bb071aae9c2549f964f1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US3X52248405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb381a4a2a582a9bbfba4fb92fd425ff50d95bc5f9d7eed168c73e5974a6b1168. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/US3X52248409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d84d63281b03e74d7bce5b3eab7a60df6f4c2df0f045cf3090cc64fb762c64. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ITH712300136.