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 0x3d97d542047e8295d864161ae4b47b8820debe803195ea94003bf16d5016c07a. 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/ea819e35-5b3c-4714-84ad-e42e2a311f54.json and https://artists.proofprofile.net/proofs/artist/ea819e35-5b3c-4714-84ad-e42e2a311f54.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 0xaedf8bf82703388cb434d934e3275ee8b5f7edbe6107e8fd33ed2300a0ed051c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SGA311110518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1472d0e7a700097d857918a1e56fc6a4042688073e3df3fd985caac12ed8ca. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEWTU0800607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7514ad564b0e7f9e9ddd11bed8646ac1ea9470e27ae7ed96cbfb724653d9f2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SEWTU0800606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a322a0e8e4a3b7f47d1fc24f97114251380fb538753e281cb319ec09bf7564. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/SEWTU0800603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb686a1a47251a2af46aaa00e52bf56bb5583141c83140f27cb64f1449aaeb5a6. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/SEWTU0800602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a56b89dac73ff2e5ddfd63898619cfbc6f97d61ecc1a8bc0089ba68cd6c209. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARF411000426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4167c2cf656ca3137988cb2397647fccfd2c6674e3656edbe601243f778bb95f. 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/SEWTU0800613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed83f363f68000da31a1b3a2bdef6a232ee4156da44747556c7d4f92081c94f. 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/ARF410091526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed83f363f68000da31a1b3a2bdef6a232ee4156da44747556c7d4f92081c94f. 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/ARF410091526.
Vintage Café: Lounge & Jazz Blends (Special Selection), Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed83f363f68000da31a1b3a2bdef6a232ee4156da44747556c7d4f92081c94f. 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/ARF410091526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed83f363f68000da31a1b3a2bdef6a232ee4156da44747556c7d4f92081c94f. 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/ARF410091526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a011b2cc971388bc16d31238db266c48ae399f08cf08f8c3cb21131f8864a6a. 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/ARF411000427.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 19
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5704cb091f88e6e36d3d18b00c9c2f40cb116436dfb767395dab02ab884ae77. 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/ARF412100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed83f363f68000da31a1b3a2bdef6a232ee4156da44747556c7d4f92081c94f. 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/ARF410091526.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 21
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe5cb231e77b6bab2c9630634ccece6898ae62d0bf587c9cab02394491696ec. 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/ARF412100382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed83f363f68000da31a1b3a2bdef6a232ee4156da44747556c7d4f92081c94f. 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/ARF410091526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed83f363f68000da31a1b3a2bdef6a232ee4156da44747556c7d4f92081c94f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ARF410091526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed83f363f68000da31a1b3a2bdef6a232ee4156da44747556c7d4f92081c94f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ARF410091526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed83f363f68000da31a1b3a2bdef6a232ee4156da44747556c7d4f92081c94f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ARF410091526.
Jazz and 80s Vol. 3 (Bonus Track Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed83f363f68000da31a1b3a2bdef6a232ee4156da44747556c7d4f92081c94f. 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/ARF410091526.
Vintage Café: Lounge & Jazz Blends (Special Selection), Pt. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a011b2cc971388bc16d31238db266c48ae399f08cf08f8c3cb21131f8864a6a. 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/ARF411000427.