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 0x5496a7d7133abbcd5978c780c5367ecc7de4080e80304e5d802bc75262e4919f. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f864aeb-1fa5-446d-8d63-653ff2031124.json and https://artists.proofprofile.net/proofs/artist/3f864aeb-1fa5-446d-8d63-653ff2031124.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 0xba27172c72ef06a878840b1193a51436c9da62761f1530ad8109c03acd8a71fe. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:53:59Z), 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/QZK6F2584819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d5f8626120561f72d5d18e01069b67d625416cd6ce4dcd5afb62db23813f8e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:18:32Z), 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/QZK6F2584820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96048158110a482851a33b346bedf840c6e4dd3060900571a874aa2b4f9ed95e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:16Z), 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/QZK6F2584821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951a513fd723a27c4fc12defb0a9666f1b9ea3e86a443c785bb912836d4b169f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:23:20Z), 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/QZK6F2584822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0746a0715586543252c35b7d624722e55b50bcc3844c0dbff0ed85ae3d4da95f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZK6F2584823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf95cdc38eff2e27a5a0606f40d8b9af78a72168b1ee25cd9dcf3c3616e5fb7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZK6F2584824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8473b413a406a5d22282cf7f9cb4571d5c306442d424636329ab8acf4f16f8e2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:18:38Z), 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/QZK6F2584825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1513b628f2a0378d65d81de8c3742891657b12ea082222719e1a9ebb4d1a12de. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZK6F2584826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc039dcb2cad28fa9f9a5d1ea0e7c33f5eca8ca8fc68416b71fa8b27dc78ebeba. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:57:47Z), 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/QZK6F2584827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdedeb90c163f2935560a08d19419c7dcf540fbb73b1c9bb41037a5d0041a6e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:25:43Z), 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/QZK6F2584828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a3808adc350b28e811b92c592c29079a4bdf7c825e6c4348994701806b6578. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6F2584829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbf61f1094f0198d498bf0aac3758c866c0e4689e29753a7afb7072b00f3f88. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6F2584830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef42da6078591d80a5a54c424fe6334dce9382b04132b475da806edd7eb5d61f. 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/QZMEP2539198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb46964665b37086be0c975bda183b8d8ecb7ddf81cb637e6babe0a5b9e67b4d. 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/QZMEP2539200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02366f2e67055e8f30b01df6d7fdb501b382b7ebd051a8ddd8860e9dfa4c8b3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMEP2539201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a368abc9353c7d9a29d12f60bbd00fbd1cae0495d38c4d9f1931bfcc638e2c6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZRP42549720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512be88aad5a795a5bd8f6700b6a93e7e1acf7846fda6cc4ae3fadbbce0a3136. 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/QZRP42549721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ace51278d7e441fb19697ffd373e06fa093dc65745daec58452d435ed984bb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZRP42549722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb68b4df37d2d00edc45b0a4207b4ec181235166d8e53ae3c4ab18e361883578. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZRP42549723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fea87f42d169cbf4ec640f51b05d36a050c9216eb43ce974aa09a8877ef74f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZRP42549724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f550d9a2f635e296373b3d4c7ad55ae5507e0843eb18f0c4a281748738b76d4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZRP42549725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0165700702b18e9cc4bdc6d2cddbb5f873cba89c2b6befc65577fc84087f3db. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZRP42549726.