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 0xd74da5bf17751fd79b06e763ecebba6acf76711c4ba4632da0f8e34969b399e1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a94bfa53-3641-427b-aab4-7a8d8594cd2c.json and https://artists.proofprofile.net/proofs/artist/a94bfa53-3641-427b-aab4-7a8d8594cd2c.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 0x57352c3ea05da3838af24fc73c6b14122410b462f7639147b76b3bbbfc9b0a91. 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/SE6QE2461753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a8e23e8f87deb178a645729052179cc2495abd67eb0f831cd82bc3783c5f9c. 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/SE6QE2421720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5b913bdeef8ee4d1f182c777f06609a0abf0666078aa97cda68d7a97eeaa19. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6HN2463238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a217d99057736bd47db97c226123875b6baa5f68362d8f8c1de87320b8c7aff. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE6HN2408672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d65cdcf224e1e15fe4f889f9f5b5b203a9c2dbdf878e9bc95fd2a512131789c. 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/SEUM72301825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cbd0df0a4613a5ec3fdd98e13c7b6c34e773769ebaebaef17ea8a3c862cd55. 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/SE56I2000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee47565dc01f755bcf1fb0bcef03dae52fc6b5ea1442bfa3b8b6b17e25514e7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEUM72300871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09c0a4b9a381374d23763b95c162f22c4e624a9a006d767bbeddca83aa362f1. 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/SEUM72300853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4f78ff14e7e32036078c04b71d6090b79abaf841502bd7941da79cf4593919. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEUM72300513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac131f3df528d40a0abe8c9abfc1ca6711c3672bbf8f10b500c21dc6a548f63. 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/SEUM72300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ee1ec86c788e53caa1e0be1075d00be14c5b880c72dae1f69fed15d4b043d1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEUM72201077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a50280e8126d390a0fb21c85202eda8dcfef8ba395372d3cf2bed6c54bf6fb8. 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/SE6Z22200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2bc1f1eb817cb9eaa46acc0f247bea570f62b197b2df260809032519698ff3. 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/SE6Z22200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1796af257ddeb9c1b94107f5667f4f874113c55a8b5e68b4eeded5214718f35. 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/SE6Z22200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023bde1455d6292f9b908fd39527046f8f8ba9edc052e100159be812b4fc7ff3. 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/SE6Z22200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b34916a9ccf97610f1fbf800351f5329d99ac61d9049294787d993043448b0f. 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/SE6Z22200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1ed6d5304836afa7e77cc1f0a2abe17d5a2593d8a9946bad6d739f937983ef. 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/SE6Z22200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74477bac4684274b9e817e424810620cd02ffe1256155abb9f181f215d3033ae. 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/SE6Z22200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8080a82d0e4e593f0dd7ce8b1f207cc9f99b5fdd651d242c8ecf84ff2ca699. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/SE6Z22200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc890fd73ee4cd7f3690c3d7e7e622f97c35a17ca6a42fe8b5f7ba1f475fe86. 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/SE6Z22100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6719b408905a0cabdac684410f2cc04ec4b16966fc19ea87a0552073e20abd. 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/SEUM71901413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dc823d48c161c795737db70eedba405572b2f4e4650b8b0b2b34af87dea41c. 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/SEUM71900735.