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 0x67fb9ab0cd9363c961a6b82b4a3fc19ea94be7efed71eaafbd689ec2fcebdd64. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/899c893d-7781-429e-9431-0400806cfed4.json and https://artists.proofprofile.net/proofs/artist/899c893d-7781-429e-9431-0400806cfed4.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 0x31b721e7f2ce1c99b41d21c0df670c6388ca2c2644e98fbe1b035e2c70a41f37. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDQH2252138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18af46cee038fe3fe1df889edc9d4bdd0e3cd6a3ef836eaba7f6aa8b0b950d57. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA062404203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716e2214980b50a5deac22e1de316176a5ee431bf259feda4c54b3f24c74bbdc. 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/DGA062404204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bef33eff64eecfc8ca274446513b04146c2209ec983fbfd250ef922551b332. 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/DGA062404206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c31c0259133758369474f9ed13c030cc47dbfbe239ae96461bfa6a95aa3e6b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA062404208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18473fca63d86869ea9dcb6fdb626428bc874f65d271194dc9db6b05a5c1f424. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA062404209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cbca8d1da46f67c63b3a77835da55a329c9ab878a0e53536207092d422a952. 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/DGA062404210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f568ee80e2d3c983e7a55c2eb6daef4b99306798c710877c1644d1ae6079442. 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/DGA062404212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ffe0d3cc7fc230b4f1da586c9915a178173019d5614ef2ce5669619ccd1941. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA062404213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1726885a11f569c4a577c24938bb8a6cd3769aaa800f0765a8e85c16c8c9dd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFYX2358193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8aabcfc4edf8ceebbe39bd9c72b4da51fb95b9656d51d00702fe9bb9d380103. 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/QZDQH2425932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d19b4641b55b073412ff4249ab7bcc7045593b2ae95052854ca3b1287a9fda. 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/QZDQH2425933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171688c3b2426a197478a33e1f67584ae331d5260f026b8668a53d8a66be8490. 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/QZDQH2425934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5da7573854c4be9b1f79a219925f45537b51649d67dee5e2c64cc5d7bf79d1a. 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/QZDQH2420259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4d24552e21004d032959b205c3ac07b95da667f6f90ed32d6ee63bbdb8751e. 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/QZDQH2425939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce80430f00c63ebeb24d08c314e962939225bbf1f90abb6c047897cad8daaa6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDQH2425942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1d279374176c7b45e2b39a5902bd59ea348d691f2a47fea49de97973fab079. 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/QZDQH2397973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ff9529108fe58ef773cb8840a7abbdda19421d8760e841b104b446497b7d5c. 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/QZDQH2396083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5996c28a4edf37c73894263c453ed9b450add61e1c08df0477ebcb08285b48c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZDQH2425945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4778dc03cf01d43c9cdf21168130207205fed694fa0370ea28752cf799bb3b48. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA0S2454762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29af72fc938f47af56edce52a2f502e67808370277cf9f4f44a92ff4f9574949. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA0R2416946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdbce5e60481084563126db40eae50b2eebe35ed1c5eed02937d1ce46e417be. 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/DGA0M2490473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18af46cee038fe3fe1df889edc9d4bdd0e3cd6a3ef836eaba7f6aa8b0b950d57. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA062404203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716e2214980b50a5deac22e1de316176a5ee431bf259feda4c54b3f24c74bbdc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA062404204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bef33eff64eecfc8ca274446513b04146c2209ec983fbfd250ef922551b332. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA062404206.