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 0xaef1d8b76ac0ecdaf3a4e3bf9b7081eea0ba6b56c7230f16d3c0637745c79855. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8165da5-1808-45be-9ba9-3f8ad87b260b.json and https://artists.proofprofile.net/proofs/artist/c8165da5-1808-45be-9ba9-3f8ad87b260b.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 0x279451115615d27d1e30e9b20f297ff6ad543b4512d1103ebe55fcaf7994bd3b. 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/NLC242100220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2988aa92d2e1d46d998eb3cdc681e7617f99bdaf5cf6534e501ebbac81f8b83f. 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/NLC242100222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5576c5c385c124a66cba8ed9dbd73f61547bbd4a9193dda16bf35351802437b. 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/NLC242100225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41542f0944fc43e8fb89d109b34f67fc6738a97b6e90cdb4e4fd0d551f5fc7da. 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/NLC242100226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5afea9bb057ecde18a1fa8ecb8191e37978f9f7c756e35eee09a24de3f9730. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/NLC242100219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9361da5dc61ca0a80207cda27f598a009c4001643fddc6a51db1528920c7d866. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/NLC242100223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a33afef67a12e1136b73d9d096a2f3917b4d32ed1d310127361959b06cae63. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/NLC242100224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4ab35b29bf863d8b8f77d7c537d0b4e0d2f5d5b1c890119110db366a257aba. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLC242100228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a546333b1ed4a7f7a01e3bc51cd8ee81b6570ca7e86cd2f9ae4f2ca7c63a5e2. 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/NLL6T1800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b925de2a496afb64401878005069367101e6929237c6d2c09c180bc1595f94. 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/NLL6T1800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f0e711fe1956029c8f0feaab0592736d569295bcb5e3dd3d171e11684594b3. 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/NLL6T1800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fff6cd2cd9b64c5c829dcad2dfe5e1a315f4a558f82fab44ea0b08b58a4752. 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/NLL6T1800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79b7c969e9eeb637cfaf9c861d8bc50702251f2d6e57ff80576f29a33f92ec5. 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/NLL6T1800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcd2d9c831d675cca08f770ea404e65bf3a8ef440c986924278791f83a07bb9. 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/NLL6T1800114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8ec0b0534d8a4960d0d307f5a2626b280d40483a79aae8a8fb0e41c2f59c88. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLL6T1800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad2d9f0f29c68815c2cfd78388fb4d465aea66686b9893689a18b4faf431a09. 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/NLM8H1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91decfc7122973c830eddba933a4b65b562c1fd945b87719c8d1a43752123390. 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/NLM8H1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d32f8f4a207283169e253600e0295504123f475c70d8fa4c98f08541979c7ea. 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/NLM8H1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5b0c8c0e5bd38199e6ef5f21e22a44a656ae0d7767b9a082547f86f4cbb945. 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/NLM8H1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fabab11ab264e74f43136aeb3cad998aab55e4726cd8d47d6e9c8e5b943357. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/NLM8H1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceadcfd0e8eb8f29675e8bac8e24e160b5409700c6e7262772d5df71cf685835. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLM8H1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff56c7c4eececaab92a825a01b88ad1765e1008b21034351d85d51c1b2d1a5a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLL6T1900003.