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 0x6c1541dc1abe6b16546bc44b299025d4013c2c71ed84eb96a62bc701ba6947df. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0633bcda-7a07-4b14-b16b-eb2085632dad.json and https://artists.proofprofile.net/proofs/artist/0633bcda-7a07-4b14-b16b-eb2085632dad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Covers Culture Presents: Morning Chillout Sessions
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 0xc96c44f7cb18bfb91d6497cce4a24ff81b31deee220e312f4cbfcdb5005261c7. 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/NLRD51953764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0727ab706cbbc6903bd10cb3df613f2f9a20d0f77c3316dabb18450824deddb6. 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/NLRD51953673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e465c83c4a1ee66890132b5b6c6a85f47d22daf574f9594edf12aed6fa29b8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLRD51953747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a440b26c16eb82ea823dfac015e9cbe03c8ff2147aa6326ef5ea7d6bd7fb712. 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/NLRD52017607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc76161f1edf3535b4ba097e798d6e390fc57a2c1d12081540ef45c271fbfe14. 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/NLRD51953716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd075f5d587cc35e8d42c8eb96975403040aab7d1a44bb708558000f865973b18. 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/NLRD52017621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85aa8af9876d96a363dcca90d6a0cdaa531b7b9b3e5b3fadd57b0510578c406f. 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/NLRD51967464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6325a972a719fd8e306d22ef9809c740dbefbc5d9b4f83e4ebdca68c35c7db6. 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/NLRD52017605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1192843daf2f8a4e1d8021c3c12e048a8b32b9cdc7c5389a00fdbbb4b3c22263. 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/NLRD51953749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248ad0ccebb482fe5fba0f2917ea21551b40560cbcfd11a84f4e7b2654a2d66f. 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/NLRD52017608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8db500ea944b821f64752ce0ef5a2124bc46d5a61f6b24b261fef99d9a553e. 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/NLRD51953714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d4185e0b1d026e5068cb51ff022528b64f464a4dd9a5e6ece8c1678d86c26c. 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/NLRD52017515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a05626255f67ebe96befb49aa33f12bc6648c62cfffde82b2ad801cb01dff84. 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/NLRD52017624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c7283c073c5932c3276c6164e840cc5b78b7565342af35fc6c337019188923. 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/NLRD51953756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa215816451099a239a878f4921b21b11fd0229cf0069f300c1778782feb241f7. 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/NLRD52017598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c856dde2d277a12ea53a94a721189b8561ed8508765377f243e3ecf12b6f956. 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/NLRD52017622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aab57b341d3f7fcdab5801c6ffa09d498f98c1bf2af41b97d90adfbd2c729ab. 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/NLRD52017516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b05af7c0080933197dd20daf0dfd5d622a455cd2038b5df1996592f323d0a7. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/NLRD52017548.
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 0x7e3b17c54e029f030a63e3b5f4a8cd1d39b562b7cdedbab5266850f47205b4cc. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/NLRD52017555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4563c88196a370b048512a56c7b0127089d99a0864b6b7a7668f444e4185e2. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/NLRD52017623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bbe3a0bf291763673129ba654458779d2f5c57d037b0dae9e7a58139acb745. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLRD52017632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df7c787cc803a28a5bc17a54499649731ee1e86efde523337fc1c4220e4a4d6. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/NLRD52017566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fd181d5f5f250f615cd627db459cbdf63d50a0a9a42a2a4c8d56ab45d2fbf6. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLRD52017557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71944e82b13f3464e8e5384fde436a957203e25318aa7c99ffb25cd7a1caf36c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLRD52017553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8dfa20e772af53ea5c1c0b2fc3b0cac8b307b27c896f65da80668413c443a8. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/NLRD52017634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4e136c3030eae633ee109af6f1039701d55f43c469dea1635ee644cf988e1f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/NLRD52017619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e4f7f964df1f1fa91422a75208450bedcf2fa5ba1d8e42bb66d14f8973b614. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLRD52017565.