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 0x82383786de6990410c9832f7866a70221de4422da6a9a6c69d2124a594912907. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06c964b4-10d2-434b-bd18-cf53ff4dfd19.json and https://artists.proofprofile.net/proofs/artist/06c964b4-10d2-434b-bd18-cf53ff4dfd19.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 0xaec3803c30fd8331a7a84d41bd1f3eb5ff756ae2db3fe5d561479ea2c982fba3. 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/QZTBF2434775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eee983c333058935b931edaf748d25a24ceddbe3224558e5b1601ca6556f80d. 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/QZTBF2434779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764de13c00271c971b76505b211471ba150618e8d2d31849e2832e4282bbc5cc. 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/QZTBF2434780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa944083eaf29835af443dce0fd482a41874b17832926185dbf5f70cff8a2b6eb. 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/QZTBF2434773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f859c006a77caad60c227096cfe11fa16d8782f2e67916c61124ae015455ca. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZTBF2434776.
Nerot Shel Tzion - נרות של ציון - Special Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee52ee081ac71896ffaff88450466a928ab72216c1c73164519d44d2cc56a6d. 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/QZTBF2434772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39732c00fefeafc1cbfe439ab70fb5bcdd84100536ef71b7b742b9886c1ff5fb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTBF2434777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdf95d46f9d0e05c5e445ceaa296c05f8045bf838af98c540c86cc2083ad601. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTBF2434778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d9b1195d37c0c013abefefa46a7adafa21a1df9e35dc5e52160865beefa6f7. 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/QZTBF2434781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfcf1d3d09558f29057b05c5a7273857c9b2699e771d854cb34aa5fcfc63854. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTBF2430304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e881f0f4d6ea23906705a9e410cd2b17ac8d888c407140b94943b3f413f8099. 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/QZTBF2430305.