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 0x28330d3e79bbcc2d477c7b4a60ced53146d5ad44b820ba22fa0caa04a1d05244. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f72f07c-43c2-474a-8725-be1fb28ff349.json and https://artists.proofprofile.net/proofs/artist/7f72f07c-43c2-474a-8725-be1fb28ff349.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 0x3ae595b96c1e57bb621715a3e8dd727d0ef459e56945eb91c9cb595973cb549c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPW462441161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a94534cbfe472bc53e56a95569597d1adeb13fbc3caf327c9beeced181a4ae. 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/JPW462441158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba77eb036299f71773b4e320230ca92bdae3f65997dd17d0ce28815dac4e665. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:08:01Z), 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/JPW462441125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e299a9f6284bf427cdf8f8144e95fa503462a4f9023db95c12eece04b7ed6e1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:54Z), 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/JPW462441126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349f35db4a4c574e8054f04f33fb73e4a5dff6cfdbdaa4aa2edbb25429a72723. 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/JPW462441154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f176320d20547507ee14a71713b43a91848f464265e312390ba88238ac0fcc. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:27:05Z), 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/JPW462441152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26eed5d9ee0ad1e056c44c3089588463a92e42ba80ba8a41e86e15071a4fb57. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPW462441179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6e73d6147289b321586e28a322a6d75a0c41c4131d3ab91bf01c3b75db8b44. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/JPW462441160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d091530d11973fe805c9734d33a16d39befcae53c33a2358f7d32c4c94d282a. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:18:30Z), 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/JPW462441164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa849a9046776c7e8710146f3a25108d1567ce848cd829c6df950cbf7e7e70077. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPW462442783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e36ad47fd816a15a0328ef9744da03d36e671e7122e51918fcb7379c668174. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPW462444436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1a48f6c0ebd32312bbe4df4d571f25e73fab0e322732ef8c96b3a74e5616ff. 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/JPW462444222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67754c781ec12a87a8f1d4e5f98150547fa93dd923775aed29eb90c62ace2c3e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/JPW462445763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2c54b03b83054deecd94b50232f161fd26402abfb2c131413f4422edeba8fa. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/JPW462456659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfabdcfe02d05e534e1d026dde8e0b53040a04df8ad165d4fdb8f96d185984fe. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPW462466471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350eba24fedcd93edc06c2317f68de2a211facb8b5556fa12df44b29c9b88af5. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/JPW462473790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27eb850123c9384d8c60be16977e034ca3a719112bc738242dc77eeec55a8512. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:32:56Z), 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/JPW462523889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4e632f149c8709d674b92bbc127dbcbc95c16eb5c7d1918894511aa16488e6. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPW462540862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f43638a6ed3bfeccccebea8893c3790fffda16874705183848f2dc7041479f8. 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/JPW462541883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f8175ac72186eeb4f966c9c87406c7579f1fff756bea147f04b107c1fd5353. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/JPW462545657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8b5fa38247dd0342e2066550c9c2d33c6b9fb4a40c1b8d0faaeb4c2da5a95c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPW462579062.