1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe735441fb66547306739639e05c09ad1e6b3858c0fc58a92daa08ae9f4779d04. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3549b0e2-6afb-4387-aa2f-d886241c58b4.json and https://artists.proofprofile.net/proofs/artist/3549b0e2-6afb-4387-aa2f-d886241c58b4.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 → block OTSBitcoinBlock must exist at that height 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 0x00f8e68ef261112aff76ef6c995cc4fa5498d10c78df50703e219da779966f4f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZDA72027272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1c71f904b6e6cc7b40f29f5d3bf9cfd27ceb83d2d5cb82d06ebea87f8393e5. 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/NL3GQ2100241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6ac5344baba1ec038d650bdda018f3957ed710a963b60ffb4e2a673fce5d06. 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/QZHN82243780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1503ba947ba4706d0f4d11bc27b10e2174ab04cd15d0eed0c26a382e634548. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWZ2252310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe125ddbee84ea8d56426de73595b15036066c7c82485e6ba52031cd8ce7f35. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZRP42291552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0606a884fda44743267fa22a288ffcd3de7daa591537857c7528c8088d42205. 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/QZHN52337278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b112df9c4fa72397714a804e58f3188c59497f4a67cc734550645af9613ac6f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZDA72436461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea5c02af605a0acd0bb4aff6b86fbcda8aa4e0ded73cb5f2479e46f3eeb3705. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMEM2421375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a680c5e36eaa45eae835f79f3a151352db7a913e4ae4cbeb801600927f42f1f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:59:59Z), 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/QZNWR2453667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61bb6b68a596371dfa997b212d37c071c31058a36efdfc58c273b308af39014. 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/QZNWZ2489747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0bb46af95edbc925010409f17cdbad18eb8fb345e62ed7760b6639d7a51a81. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZZ7L2440642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddfa4e79c767f618b65f939172c05eeac2ccc6a9d95f7bedbdb91bcbbe6fe33. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ7L2440643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8640b84f4b30f86f7a5abf3caa35b4b7a4a35d80d3b7d104cdc7256dafa24d92. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZZ7P2406610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e6899c36cf3cf461ba9ee194258e2ac49b54aa06a5afa761a6881d53afd34c. 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/QZDA82511553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e07ee843c8be955238462883d4711f95b96b8b7add78f8bd4343eb71dd5cdfd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QT3F32428473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b927bce600cf8cfb14d4a3210ab6908c9e2658e43488f95c0d040f1e6f8c50. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFZ42347348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586c8c1788ce30909b421d3fddae072577f3b5bdfad520b43959459e05ee5670. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZHN32584754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a1b48ca54af9081e53cfe61bc07b17f3af81d96d296de3bc775d3250521e42. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLP1A2500001.