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 0x7a1a3a14003983eb3a43c6eee191e0a84be80557c2a139a104d12e220983262b. 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/36d41f47-17fd-46ff-b0b4-09303436ac66.json and https://artists.proofprofile.net/proofs/artist/36d41f47-17fd-46ff-b0b4-09303436ac66.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 0xf5054fb50f140075a5ea7e8007970aba55951924fdb5bb07c822b9c6b09fad55. 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/BCVHO2100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893865b425860fdab32408fe5526ce50b9a83b8214dfcd78ca65c64fe26a3147. 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/BCVHO2100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1e1834cce35faba2306bb418bd023271da155960af65769d10ee06cec83b7d. 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/BCVHO2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1964a79a210aa8e136a4086a910752921cb2e06ef1c153aa7b5ddbc259360da4. 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/BCVHO2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb84f81c3e8eca0af417b3f83271aba2c4683222895f7dd7e6dad9af960a663. 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/BCVHO2100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788b8c2b2e158b6522c38e3aa7d8af166d69747a1366b7cfd4f4211706745539. 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/BCVHO2100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf6ca3ae55a6c8bea8daa0215d98693665f946e4502da5b29417ca8fe5e932b. 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/BCVHO2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3fa534af88cbbee0fb6ec763cd9e6ef01072714c0b70831fc91d374890e3f6. 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/BCVHO2100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312fa2886c5020e896dd37575f1fe35a4c573887cd1036616d6078d6f243aef7. 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/BCVHO2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e581c25935f2b57f6ccde73e0f8306ad6f200e21585fc150df68f8030534e7. 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/BCVHO2100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab1c19de2755f2867599fbd30a63b4b09270ae864510c0d9e9e30c4468786e3. 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/BCVHO2100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe954fc4dd6826775b6605c62e629d88ccdb8b3d0d5339180f95a8794743686. 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/US7VG2147506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8172c3060fe9dfc14903f3ec77358f4321312f09f9d998b9841070c5c3e96c8a. 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/US7VG2147505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53124fe969055b897f226cf5f8a7934d45cbfdbeca67af3c1470ea1230dc23fb. 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/US7VG2121058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f2e0eb738abe4a9a61601754e72f95936553ee57a7b6e5bc6dd89adc878f2e. 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/US7VG2147508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0619ca3aa1322f428d32f982e6afbbe3ae02f2d020034dedb014f1c6899123. 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/US7VG2147060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d01f879a86d12f9bedec5ba21b1fe7c50ccb56a3a8560cac956bb614a8e828f. 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/BCVHO2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc2acc0693323f41bdfdba7737fb63215bfa975d0dd142965944cff371123bb. 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/BCVHO2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8000d4c73aaac264da365b020d6d5d5105062983287b64de1e2ac85369e3ba4e. 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/BCVHO2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92f8ecf64c8388f2311c3dc97ba157c2ab58a243775906a86082cfab54bf28c. 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/BCVHO2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc101b9bcd7891abd7f9e1f90fb79b42df3914b89cf425f3ef06d39b51ebafd9. 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/GBKQU2247950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b0692bc6ef83aa8d77a3e4fe26246b719dcbdcfc69acd1c7d590b2ec536101. 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/QZ5AB2205406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932f7f86e69a5aa7864653a552f967906c1e6d5f2a94d8488a8826f1acf3ddd0. 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/QZTAU2275479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0abbb9b0d404eef1550c21d287b07d08ceaa101f0612eac3438e08587d8521c. 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/BCVHO2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231355e41d9d6b303ef42b408514cd1fac123fda58879f2d94b8b865ca07e177. 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/BCVHO2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691ee3fd896f20b0dc9812331cda34c682b3b275fc2f24eb8e2be75ef98d219e. 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/BCVHO2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd791a77f025fb0392e8cc65e0221718efa05b8307f4394030a7d09d0578007fe. 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/BCVHO2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe262ca4154aabe290eb7acdfca77148adf3cdf663ce25bde76e2bb3822951756. 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/BCVHO2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e8629b6953f80e4d689749c62cd9e4cba22397ecc3b8dd8fd603e2a7565a06. 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/USYBL2100539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6f5457acfe240e8bde6078b0591e2ab5d32f82e2ee517954c5b6849373ace0. 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/USYBL2100540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6399a073eb437d148628155ce97a4be6f6e08ddcf40980ad1f2f0ad78181cf. 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/USYBL2100542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b77cc4d0f26e4a4938cf85457b19489303dd5e0c06e499c8c9c8b4336942f31. 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/USYBL2001124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeeed00dcbf6b4837849bacebeee84b39baa1adf15507e490d8cce90a52ac0c4. 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/USYBL2000611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be107fd605b9447fb12b39ccdddf00adc8d21c9a4f6a1dee89eebf7f5545d88. 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/USYBL2000612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacf30bc63b1ebfb32643032074c724613789367f6a87723978de63b3d08212c. 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/USYBL2000616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8229b68bbc8a8891bdd27070cb8a26a820ccf3f66eba945decca6baaa5a22ae. 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/QM42K1775741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231355e41d9d6b303ef42b408514cd1fac123fda58879f2d94b8b865ca07e177. 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/BCVHO2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a35e167e2980ff1f0c731bf4c7ff63a258cc4a506c64b1b10ee8328f762c74. 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/FR9W12237993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c32c05305927791a1e4a1f17aecc98892beabef39672b94a81a3ca6b84f13d. 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/ES71G1933546.