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 0x256e8cea7e17947a176cfc81708e90caa9ee3947d4c85f40ec8d9acd008051db. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09583b56-054c-4184-bcc8-e4031c67ac31.json and https://artists.proofprofile.net/proofs/artist/09583b56-054c-4184-bcc8-e4031c67ac31.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 0x0b13d19018b600e6cde7f77f5dc1aa27674b255d12ce58713b59f75eae42174a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWDE2421283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d0064dc0003953bcf2a99c5fa48e8996aa8fe0bbbc1e7caee89f9bf5294434. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCAHY2459854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f97ab852e7a5875f409a3de9d90aaea432f6044a07b766a6b305d205bfda06. 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/BEB682300766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe762b708062adcfba699a134f564473bf4f9f57206a49d37c3ceaaced4c341b4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZRP52335127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f00d6c05e4be0d7401c6be4ad9b7e986895aa40ec3e13fadae932c00e40281. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZPLR2304861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173b544a5b7296dbe87d9784df1b70c08c26151b233046b61a3694db8bbd4ef5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNWR2379279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51f27fe9cc84fcd4b276b5096bf0785bd220a9c5ff3e5ce883912a833b3d928. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNWR2379280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70d4319f9f5e22c27633444054de769dd8fc58f337a4aab6eed4167ce6ea63f. 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/CH9742300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48ae3c1222e42dd8ede6d10c7be0ffd0377fb4494d600c56af5798bfee561e7. 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/QZTB82213891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501d7bac63eea046192edda9f709f38929f8fa471673158b292b3cad56fc97c9. 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/QZWDE2408933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2daaae9660e49213d65b1d10f9ceb32a473b7fbf060775f6591c231a0383a0e. 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/QZWDE2408783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769f7145732fc21c4894df9dfcf0bde7fb78ac734736d79ae80782bd08799924. 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/QZWDE2413638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b13d19018b600e6cde7f77f5dc1aa27674b255d12ce58713b59f75eae42174a. 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/QZWDE2421283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21acbc78740cabff20f7441f3d94a527db143f4370cfae4fd62036da354bfe7b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ATR981330119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10e6b78ad4834a85338aa9b5f0afc21ac4f523839a509a19d346dbcc772161b. 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/GBWUL2534444.