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 0xe25d3a6003a53bcffa531c4c09fc6912fe0f2717a7558c8a3c3e5f0e6014dbff. 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/2519be4c-e29d-4835-8b61-c7fa059f2f19.json and https://artists.proofprofile.net/proofs/artist/2519be4c-e29d-4835-8b61-c7fa059f2f19.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 0x9ce7e14080058f3cdce452121f3f776f3a0d61190cadb068f514dcfde0a4bdfb. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZNWR2095494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6cf6acbadcf2cf502fe4013909aec2dbf91bdb274425b5e24066542d8a02c2. 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/QZHN92116407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c033a2260af87d081deec0541dc281bf212779ad2ab4677dbef335db921a9f3. 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/QZHN92116409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4ffb453be4b0817c9427b7e51528595b8075d2f089cdc773b7c680ad951ce5. 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/QZNWR2095485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4301c1b745f4cf5115a051d436921751a3b9711ba6a59424363b8e3c6c903129. 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/QZNWR2095491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c028b88bdd829bf84c3e82835457e26f779512076e7d458f89f2793adeb555. 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/QZHN92116411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278c5d038a597b8d73832d218caf6aaae549e3cb5732d4ffb8dfccbfc0853a9c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZHN92116412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50973cd49e062b71ebe9c2943abc62a556f4e2cf4711d66785a70635d6c1eae. 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/QZHN92116415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3a7b1801d882601fc5b92d528164c9661b2170c2a8f9e499cf70360634ad9e. 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/QZHN92116417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2484c83c98fe10c160935ea0daefeaefe501c2828f8604d0ea0d7799bf69cdb6. 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/QZHN92116418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bc209cd24e782c3a3b92dc0ff29ecbc9aa6d62bd0d49a8d82a34acbd7a078b. 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/QZHN92116419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edbebc5b5857c5971b40035d72f78842118e519885730467b2d779c0452c792. 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/QZHN92116420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b460b3fe01b3c340221866aa3cdb24cd98d480ff9db738ea54b8e138caca7dd. 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/QZHN92116422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c92c2ae768094ec42c4fef63ee5052c2ef5e10e6d06f4d5d0abd0c83b67ba7. 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/QZHN92116423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59aed3fc039a89901096e524042234f307ec3f1c9d87f51f5e1310b62adc009. 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/QZHN92116424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fd8e31d67ace52c5c30d21dcdef7d8d6f8b2d4df1f0dd95591680af728a3b1. 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/QZHN92116425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4605754ca5c51f6d3706b14a6689a0ebc6cce2c72b24462299b74a74f9c8d6. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZHN92116408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d13f9149d14cfee8ad113e367bdea6a540c76ab01cf1a42c151b795ff0c78e2. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:02:09Z), 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/QZNWR2095492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9da2f79294cfada6e3f23ea588ce8ac85946e6bff5c8109c61377b378b57ad. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZWFT2464022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ccaede6b12678f3e74906d543c86118325084bb98a3e48d397aac6e74e6503. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:01:23Z), 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/QZHN32282936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2609d9ee2b314d5d9131cf09233b4f777e4e74d92b95e1accda69ef58d482d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:16:05Z), 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/QZWFT2464023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2ce3de4888700abad4b46e92ed05bc9a51f2e31ee446dcad0a8dea5b8b69c9. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:11:38Z), 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/QZDA72261403.