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 0xcd8ea3d319e47bb878e76ebce2d205d3e355e60eccd431b9e5815399b408f85a. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2583645-8438-4193-987c-8b11dc6735f2.json and https://artists.proofprofile.net/proofs/artist/e2583645-8438-4193-987c-8b11dc6735f2.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 0xa6db05db6c592e63146a94a9caac0abe1299c245008ae8d1bbbdb68134f089d4. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/UKXN22515264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c1149cd4eda677b6c84d61285b2c80c1120830b8e1e2c800d60403ff4b7a02. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:32:33Z), 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/QM6P42582066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde30dbce23faec735e62ad81d78f1efae5da54c1958f98fb984b09aca229a2a. 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/QM6P42582067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bf1ed76c5b08e4daa12f8ad89e8e15c4204b8258bf3eec7c16bc82f3ca55af. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QM6P42582068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5f6312a70d4df6682546a286c97563998d7ee3a82301faf82406cf2cfa3677. 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/QM6P42582069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536c82ee6db720f5b8038fdde04b6513571c5829e428f8eaefc8fcbb52eb5b75. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM6P42582070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62de1222ef7f0a49220b1bb7ab2b312a6b04c7ba0a99f00fb8f5a6e5cc798529. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QM6P42582071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb7b3905e7c156a58930d51e1eadfa4e354d86849a9a616e695c911066388e2. 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/QM6P42582072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc996cf3d1ceccb5b6c1df1d13082ab7d157deea3b0b9fe8bf8584fcfcd2324. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM6P42582073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c327100b750abffc8dde9ee4f6ecd6b338fa867fdc768a8c0232ffb61d3c3f. 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/QM6P42582074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07990dbec2d49956d900c33882ca820e18e15f8d81354a18d7b285269c1a4ed. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6P42582075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ae55b2f634f28f88921050969daa8f7aadabd63defd628bbe734c2ca26c80b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:08:50Z), 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/QM6P42582076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010d6192f852a9897a49a8a59cb0a69be9e598a04fee193c74ff9653c22f6186. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QM6P42582077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4423ad8a2e5c7dc1023cb8b7b36579f3e22c80ac1d39d50fe37bbc65afea6501. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:34:20Z), 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/QM6P42582078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c9045eefc4c56b9951fefc267a268caef50434cf02d1a173e7b63d38573641. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:52:12Z), 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/QM6P42582079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7104e36c5591eebe244e857a4b2176ea586874ee71d09f435081cb61cc13f911. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QM6P42582080.