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 0xa6a8a0f5f5f5f7ba79060ff38ac023545f683409fff617ef8c224a088090ba23. 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/7eb81c4c-97d0-4d13-bbde-bd745917dfee.json and https://artists.proofprofile.net/proofs/artist/7eb81c4c-97d0-4d13-bbde-bd745917dfee.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 0xcedf5571094eef2706a5c32cb0f2d5b68e40dc6144b6e1d8fd0931709134f751. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:58:53Z), 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/CAGOO2139746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676077ad336888e3247b6391feaabd5c5e25b628f7babe12b3408bee1b73055b. 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/CACWV2207894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d01bcef47a29775e45bc97eab6fa7c72f2538d30edd816f35576e82990f5391. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:35:57Z), 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/TCAGE2269312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8fb9f90b1335b8fe06c885d10a8f4afdb5a089e9eff23e54c84df38ce5b9d6. 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/TCAGI2210936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a0823c9b3c6d9219ef386efb1644349c08a519e791c33bc0b7f530490ff442. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCAGJ2241063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194d4ecbb41dd86b805dc9f752a7575b65f0c1940fb9de26b5c3d0d7d5094abe. 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/TCAGQ2204204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba373eda276a1c7b35bee477feb06fc3c2f2a7a8786fb000855d558be148d327. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAHG2352837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1175ef6930709a27fff41dea629989dd066e1d2ebf095856f51eb187d29f132d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAHM2385659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5619ae418c121473a83502acafde047d68a791866f736f259ce2852e9fd974d7. 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/TCAHN2397386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df37e5d0c6d39665ffa854f72546843ecef0e77a6eb104111739fdbed237448. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAHN2397406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85368498c6cb56e4e082ff03b52225f9bb309d10ae4446ebee158f8ca31c633b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAHN2397426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7aff3af8188d5f98b230a5bfce776ea2130895c36c0dc6f5b73f93d5750c77. 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/TCAHN2397446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246ef8cb359fb6df266554dcadaedc629a4ea29e7c7b880275d6d08dc35ec1cf. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAHN2397458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a5f9aad3719ab06e4cb59b9f8a583cdc03cffffd95c8cab82d1980f22c7c2f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:16:45Z), 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/TCAHN2397498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9094279e6e4df3b0d4425673307527b9e41303c0ad627255e7dc583074507d37. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHN2397512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ca578a5b65aae2515ea8fdaa7dc8ce0da94fd2618e2d02e97ff29195fb1a62. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAHN2397546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8190dee6050efb0a60d7ae0be68057636dad8a33fce1a458cc6dd69c787c6e06. 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/TCAHN2397560.