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 0xb5f8f714244a102c435d05829150ea3823fa8cbc9ded2c82bb0bbcf2af0ffb5c. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fad537ca-0867-46d9-b7d3-21d1b2b6b5b2.json and https://artists.proofprofile.net/proofs/artist/fad537ca-0867-46d9-b7d3-21d1b2b6b5b2.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 0xb09a94fc634790b7da483dc8248d7f58712081d97e8868e53f8ca59276991640. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXHND2539583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9bbebd9f5a8f50c509004fb24763998d1046dc4e5424058ff1e2143d6c2422. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXHND2539584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc39ca064ea97752f27becc5e6fdaf8773782f8796ba73a26a183f91941309a7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXHND2539585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05213c1ed7e749f2df1069bf428c6a310822fd4fe4faeac409dd90c001e175a7. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GXHND2539586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85064176399ae03ca9d8c2a55d198315b702d32d77c573fd482b351aa6253af6. 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/GXHND2539587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8222c4110e2c35dda547474857d9b075cfc0fb5699a4be1ddb70b7c6b4b699c. 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/GXHND2539588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d79253e4e1614bc02057dd7b7d81aec67eae6d3e5ce17786f18d02b71ba751. 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/GXHND2539589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fddc249bcf7a472b9ceb3f171725f7b66ec77c0c165eb707307903285e0ec9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXHND2539590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9369e89caf6c61a59143209101bff0ccaa05818cb803d4bdb5ba0a4db09d4495. 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/GXHND2539591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453e96727139b9bd4f18f200b79f94777640277a205b6bbdfd13e8e22ca31c09. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXHND2539592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439f80086187efc02b96b7754cf94c50739ed5ff830c48e1600b43e3975ebc91. 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/GXHND2539593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56e8a3528e033895c6a63085e8965d8494bb299c55b50afb62889ac0b24ffc8. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GXHND2539594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffd428c4f05c3da1d30ca6d90c6e8af4fe7613817bddc9162121be6597ca32f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GXHND2537864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432edab1c33548c61260d3c03eea233e2b1ce8ff1dc975fe8b2bea3c4d862c82. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:03:06Z), 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/GXHND2537865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae31d7b974a9cddcfadb04966a0f848dd45b683538d78054826af759dbfbe97e. 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/GXHND2537866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aeafcb8d12fccb6a10e7872dcc15cf9673cfc78948cf45263f04900f86437b4. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:27:10Z), 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/GXHND2537867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdeb1a523cac368e6f86223460927a7e487444e230c8ef815c439724f8c8006. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GXHND2537868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b77ca29d5a88e26799ca81edc103d6ab060989fa45dabd12e4e5c6204035a0. 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/GXHND2537869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2f1953183fb0adb4af76719858584bd1f027e7f220736cc002ddee6b269c4d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GXHND2537870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1d8ea179f0ef734fb0e24f47e354f8da15f95f328f804c6515ea13610a40ca. 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/GXHND2537871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ad1acc4f5e8733c4bbfa0ba5f7a879f6083952b126c7798e623cafdc186862. 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/GXHND2537872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fbaaab0934ce830faa70ec3dc6f934583c19e8061f66c3fb3bdf9deabe0380. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GXHND2537873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183a54e189c61d67476ceca618054d4f2b23dfbe262357cf814f1b542b083322. 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/GXHND2537874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe235115e76d671268fc9647f8b88cab8f80bd7c79f008b7350cf97fe1a0417e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GXHND2537875.