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 0x1dc130ea0b0289a4e34669c012e50df83fee7ecfdfd35567ba621c3f37265d7b. Chain 2 (Bitcoin): anchored in block 953710 (2026-06-14T23:32:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f2d7082-3d0f-4122-ae70-077cd0b56897.json and https://artists.proofprofile.net/proofs/artist/7f2d7082-3d0f-4122-ae70-077cd0b56897.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 0x63cfb3d08fe4b37fdd049a68c0d04c743f974847c19b43942e98f70f83094c41. 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/ZBOIV2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ff4b60eabd72158b2840cb3f350ea55c9cd9a28ad9151eb60c2cd0ee08e8f4. 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/ZBOIV2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729da4efd98c6f5adab50db4c5a1962b480b20cd4f68032b0d67cfb0c2786d3f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZBOIV2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e531a1125e6083eaade3227d3423b8edf62162d036c7f70725842acf935e3c. 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/ZBOIV2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea20e0b9d46ed4d00a10b5fbe31b751fd092af5d6eee03e272cac1c12afb5339. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ZBOIV2300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf282a293ae2b9a347007ca0c22a378b9bd27783a2fcaf665d071957f12b125. 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/ZBOIV2300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0c3255d9892195db45f3bb7f019504e09eb1c8467d16e9c8ede709551f83a2. 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/ZBOIV2300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8294c38045699365a1e4c43a8a3f23364eb2b2b9d7fcb13b06307c1f58b0e92c. 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/QZK6L2157070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07df4c848560ae0e41b1a12b0f08c26ec51f74eb1ec1b2614e1943eb60c915f. 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/QZK6L2157071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae4c24fa91e938aba9fef58d6c80d931e5109053173169e96830f97cda8cf63. 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/QZK6L2157074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe599b126aabe990e54ab12b872b42d983bcb267c4a04fd4fcae4894020858825. 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/QZK6L2157076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1f4fe858374e530f91dc5c164ce8188325296dc9afffb6245f634638d34436. 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/QZK6L2157077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199f40a897b51d927065fa0d7160f9ce6cd5dedf923330ae9bf865eaff3bd7e9. 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/QZK6L2073486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ff4b60eabd72158b2840cb3f350ea55c9cd9a28ad9151eb60c2cd0ee08e8f4. 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/ZBOIV2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9bae125d21c7c1907e6e2a076ab88ee6b71bdba411a037e694be3273beca44. 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/QZTPX2209091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778d40e71491bf43549f73f5b3f685882fd844f676c783daedc2aaec1411157e. 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/TCAEG1972426.