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 0x7e61f10a6cf3925cd0a5a56818a3600997ea3efde63a880382f258222a0deb0b. 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/c6127b1c-57d4-45ff-a43e-0b9866f546bf.json and https://artists.proofprofile.net/proofs/artist/c6127b1c-57d4-45ff-a43e-0b9866f546bf.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 0xe8454790b3115158dc1d3730967e3d8cec45cc627e6fcaa4eb7245bcef29e27b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE5BU1806625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf386aa45cddaab05d4591927d63c37001368d8df3b0c5f5781267aebb54134d0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SE5BU1806626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7438f9045508611b122e22a1107218479a8e332159444a3084e6440e7b25728. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE5BU1806617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2deb633891f8529f7194944c5243ae0815bc3788290fca8e68bf6b30876f486. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5BU1806627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e8863aad973e7693b60bb4533d7404208bd4d2f3adad2471436a55746c7936. 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/SE5BU1806619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1157badf8cd216776d40e4c908cc501f9e7fe43e5aa44be3e3e8fbe3589dc563. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/SE5BU1806618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d2a3bc548e13d2552b16a562cd6090652a5ebcd543e16a70009d8852189abe. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/SE6A91993910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf206825ee9dfa9cc7667073b545229195e6b97ae9cef041eaeed6c7e6236f5. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:56:13Z), 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/SE5BU1806622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c9f5354c53ac36ec39a6720920f9b579a33a8c4774b90512a817a7b7142c29. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:45:27Z), 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/SE6A91993903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540bf833287c14e2bf733ef133834c908daa8cb130d26025bd0c78867b3ad2aa. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SE6A91993904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4695196293cc789e48026559fa02eb275e83e43cc52a123ef4d656bfc521668. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:04:12Z), 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/SE6A91993905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecfbc323aa73b2a90a6e981e6ba88623fca02cd9cfd108d024d851e7c3323a8. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/SE6A91993906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea85ada74dc74e4de0f155e7b4d8ede183366777d23740462926866bdc9b363. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/SE6A91993908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f3d839b9c48aee65848eb81e9ed6732f0cc5ee07de40334a353c5e349591fc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE6A91993909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b03f90338ad21e26545bf3028698f952dd48804aedfbcccf44b28213f59d24. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:01:50Z), 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/SE6A91993911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070236814ab06a5c84da4269e72c0bd4133c6503b1037a5bef3bac61e1c6c45c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:45:38Z), 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/SE6A91993912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3955468612e6e18484ad8940c2e79240e3d2f3ed6f6915a6bc42a41dc183afe. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE6A91993914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c425d2104c5aaf038d78b80dac7dc2c030d7432b6cbcd4ae370156d412cc54f. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:50:34Z), 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/SE6A91993915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65f73d079244f2544d0e6d81467cc54f8abc8fbe71efc1a6d05336d77466eb4. 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/SE6A91993916.