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 0xc585134e1c13bd16f572faa8f11d0b23691b84fc57d8f25f7c8606c3d75b508b. 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/2e64bcde-9335-43be-9c3b-f72dc2ba43a3.json and https://artists.proofprofile.net/proofs/artist/2e64bcde-9335-43be-9c3b-f72dc2ba43a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cozy Jazz Cafe - Relaxing Soft Jazz Music
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 0x9c3dd9a1b300b079c066003346c29ec63fcc20b875b1651a49f909ea11ba69bd. 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/GXC5E2454115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba6cd7dc0c20cbfcf940cc50ef1e272e887e3ce3fafd5dc23be2a6ff88cd67f. 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/GXC5E2454118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b957ce516cce13cf71f104fb066633fd45a18c34758f88e8e7a439f2be56441. 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/GXC5E2454121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217414c96d43c08515e5885ad6ec1a45e56de11918a959e8bfd73a9807c72cf1. 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/GXC5E2454124.
Bossa in the Bistro: Vintage Vibes in the Café, Instrumental Jazz for a Relaxed Restaurant Atmosphere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4973ee6714000cfce037752175247f52f4be02a70688cc9cc6bf8c02861ced3b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/IEWWH2436518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc710022b54444330e4582cb68630c8d6356efd5127c403434a1e9dc2ed383e3d. 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/IEWWH2436520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7aeaec32695d17ff3ab5e09b533b3ceaa7219b86fb821c4c4434c1282998e8. 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/IEWWH2436522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0ab0def191e530ef444ff47f57ac45cfab17381c28f054eda1fd5801f2b018. 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/IEWWH2436523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425ef41dde926832eaa03684176e630fdb56e45ecb78553c6771f30989345764. 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/IEWWH2436524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe748e8b1b2927d126b7b2308717f541f44f244a4b1a2939f4b837219a2f8b09a. 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/IEWWH2436527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9112d217dae457c76134c5fdf3af5a5d63844aa0e74c7272bdc3f2688a47b8. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GXC5E2454117.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c48b07b1744f8d911d263266f1ffa05744678c21e0b7af701411bb3ea7dfc1b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GXC5E2454119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4c4db4f73958222a18bc67f4314330ab08f920c46ae2d9ba5fc82316d0ef41. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/GXC5E2454120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ad1719dde98b33f9f801b36d4ef703fc84cd144189293aa727cfa9add319c6. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GXC5E2454122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39331c2b7649ff5556c9580f34a54cb60d92f0d97cd5c59ab735fd6c281e0b5d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GXC5E2454123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488d4f010e969fd7440a065a508e32c513992b7da21e92cbbedd647f3e2dc0db. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/IEWWH2436519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543cdccdaf1d8c6be12782fe1f507a87fe12bd265ad87bd4225827fc52a0dac0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/IEWWH2436521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec81a31e0289fed4d0f5ab756f4b6989058c33362868a2c0bdafd5ee755673ec. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/IEWWH2436525.