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 0xadbc7d3c80d9d38866cedd35259c6899d9c2a27cadceec6895075ddafcf5af21. 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/1d643a2c-7676-467c-8444-44e0076e1077.json and https://artists.proofprofile.net/proofs/artist/1d643a2c-7676-467c-8444-44e0076e1077.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 0x8af38f8746b17188c1c1dfba9491c36c20698ba421a49d7e4467b92060a44e27. 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/UYB282273004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa020b77ab7f0238fd02b406c59f8bdb03a7d644842526cd4a3c61427c66f14ec. 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/UYB282273005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5550a99bebc179e5d83e49f7a16da935c664976b3ac03461b81c4ef1e000c47. 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/UYB282273000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ff6f8741460002eba71a1a280fea9ec627bac9c84d878f7655c86a9ce549f5. 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/UYB282273003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7d1d5d5aa3b9b858514f25ac59a420c88cc01105dfb9e10bdf9ec986d42b8f. 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/UYB282273006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d61d5b774dad7652caa85a0622396ea171b60067f681cd21f671043364523ad. 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/UYB282273001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb48ae089ddec16f09fd1ecc691e55fc4c983d4657de19f4cd10c6f24e1534ae. 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/UYB282273002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0102581baafb685fe52b66af8c75bcba345ea2f0207e8df4402fdebf4c2c15cb. 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/UYB282373007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fcc5254f235c1e0ae3a47107d0be6cd6562994d2358f18ffbf536d56e45431. 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/UYB282373006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca8925ec929de0919a763864009b2985f80b41532d397eb556434e0b7a6401b. 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/UYB282373004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d762bac84e50aa8f0a1e82b2eeb50c6fa2276b7744e13ddc3e36b06077aa6c. 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/UYB282373003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cc7e7acb5494f6c86cf2e4cc9c3be0df57fa9f7c3c29737bd6f53c003531b9. 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/UYB282373005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c42dae939a935d0082697a2e006d8d81dbe668a7dc015f3a96f4c2aa1d6378. 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/UYB282373002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c42dae939a935d0082697a2e006d8d81dbe668a7dc015f3a96f4c2aa1d6378. 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/UYB282373002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c39fa5fe4e0af2cad7f635b9bd867bd23a53766f4e869ccc9262acf4eaa0b06. 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/UYB282373001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868396d2f03492a9276b66ac04601313f285e2bf71364388d80397182ffbb152. 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/UYB282373000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ff6f8741460002eba71a1a280fea9ec627bac9c84d878f7655c86a9ce549f5. 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/UYB282273003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb48ae089ddec16f09fd1ecc691e55fc4c983d4657de19f4cd10c6f24e1534ae. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/UYB282273002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b9c7c9e1f017e51c5fffd23f323d9391075bddb5b66fd9f7e9c5114ecfd5e3. 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/QZMZ92189354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736629389f59966df7e06c7cd9304780520b637f81b9918a85094bb0e8d9d8de. 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/QZMZ92189355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d36a219225631bb2d2552d19615fd634bcb1dc7d075e25b4b8b75511b7f3023. 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/QZMZ92189356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6c4509b43b63c61ff28c05e1a5350f4a7f6be70607294fe0573e9706e38796. 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/QZMZ92189357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc784f4a0a5e433f662f36a6ba4f9fae2b8313babf21f40094e752e83a223bb6e. 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/QZGLS2126811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48204561408598e1748d92680479d3a49cd092697b58fb634234de4d97f039b. 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/QZNJY2044639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a2f5ee8ac00145fc4f0e2b2bca42eee2d96ca3e1abf3b90ce09f3a6a05a61b. 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/UYB282563536.