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 0xe767d35c1ef8d8a607ff19ed39a257215df858aa5d196936a0a5ff9788ab5c5c. 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/5e131f2d-bba4-4b53-981e-6863526b6a36.json and https://artists.proofprofile.net/proofs/artist/5e131f2d-bba4-4b53-981e-6863526b6a36.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 0xa5d4ea7adaa85dba89c93b6e254c4eda10661025ced766c1ac9fc18caa4ad5ec. 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/NLRD52410869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47caac2c5989b0efc0b405707985f57165efc9acae064cde53ef96f96df4cdbe. 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/BRGRV0700158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3009b74b524b301801f658473935f5c3af9274f787b793efef5996ee20edf617. 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/BRGRV0700159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f1bef3d9fb74c5cdc615321dce257ec56236846db98f82f7ed812fb3b61b35. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRGRV0700160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f76c092ad3fa1caa3974cbcf67dc19a43a52d57057db4a13eb9c6f8fe0e7a0a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/BRGRV0700161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceb45a000433b04a72bfb0968a8971c2e6641a5565c304d33cd261d24d125b4. 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/BRGRV0700162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95af4fe3fa6562678eb001a0ecfd9aabdc72eb49c0a5629f330c1a995a86a1d3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:23Z), 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/BRGRV0700164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dc14182f1b2a5bf878b3ec270af278de1309f65713900d5356a95ea225f9a5. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/BRGRV0700171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48181c1f45072950d59cd834a6b8efd35ca18b228828413ebcd2bc7769078634. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/BXCND2200614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d99d4ceb4896cb4a9e7ed8fe9ff405747c6b935c708209161c710c49d9e02a9. 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/BXCND2200615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde791a16d3b71c9c8f90328f681fa4f589bf50b351e9da19047e4c69fc2a18b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:46Z), 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/BXCND2200618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670d7ba9ad7ca7ec168cc2ab79974dba44b8947ad4f5da60558900bd8a910e5c. 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/BXCND2200619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21869b8d5f6c96c29318244ee59c4b5ddfc0c8f08a85b4dd2b1d33cd07e4bab3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BXCND2200621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4820a9c94532dedc5d427611df57fce48ecd55acbf02fd777a1c409036075372. 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/BXCND2201577.
Lounge Top 100 (The Ultimate Lounge Experience - In The Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cea8002cb5716f2073c7ff8784f3868a68e2472aebb42aa953daeb6525aa3b. 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/NLS241000222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213246bfd35dd332d142671fee79adef8ed799c514ad3726f2b99a3da50ff3bf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRMAX1501403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ceadc208274a8fada413d41ede6bb9c6b69f07720fc479b3484c6b32e9d57c5. 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/BRMAX1500881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c76f746f0523d90f9bf8415cb34fe2601967c1ba4728d8577a2344bd2b206e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRMAX1403087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17340ad1ddaa40148012973f5f982e1f8f0e798cca245618354574207eb46f8d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USKMA0111002.
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