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 0xfde0e8c329357c376bbe54dc0eb0b2aaa146672d177be52177e7ae143ca0cee1. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b96190ea-aed9-415e-b4c3-5b756e4eeaec.json and https://artists.proofprofile.net/proofs/artist/b96190ea-aed9-415e-b4c3-5b756e4eeaec.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 0x57775ea8dae2ebb8dfcb53acd289fb2f39751eace921c81a91650584bb0c8d9f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:48:14Z), 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/PLB382200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4d292a8dd8913a74a912bbfaafb5c01cbc0ecfb16215c6fa7b85a8ff1e498d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PLB382300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa68cb14dc67f8303a0cc480ea9ab27e184d019d9ac95dd5f5cb9eefa6fe0800. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTAX2494289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5407821045a480e9dea963ea0024dd5330e17b92de2ac17f2daa7d8442fb7fe4. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZZ762459504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ee3d2a46664b573f744f3f67f256a0d99bd39c229598fc701ce23ba0899238. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT3EX2479079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9591c76516950dced7d082f57fbdf6e0d80a1959b02a1e692e2610c1389cd4ce. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:03Z), 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/QZK6G2596178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ee3d2a46664b573f744f3f67f256a0d99bd39c229598fc701ce23ba0899238. 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/QT3EX2479079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08282d502253eb24be0ea41c87c393862502a214ff71a657cbde3050dced58c5. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:28:46Z), 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/QZWFF2446460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5407821045a480e9dea963ea0024dd5330e17b92de2ac17f2daa7d8442fb7fe4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:43Z), 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/QZZ762459504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f997d9a72652f872a4e47e06cbf1f7e37e9e71d1150eee5814020d7f58efe5f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZDA82599156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ffe31956aba0054c238be93c281785ef901bf432326932a5fc2d330893375a. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZK6G2596180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda28b6e641e7503f162fe0bc318c0c657b73c40481b9b5f0956e029381383ee6. 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/QZK6G2596182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa68cb14dc67f8303a0cc480ea9ab27e184d019d9ac95dd5f5cb9eefa6fe0800. 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/QZTAX2494289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979096a91c90f43aa26ec1b935f717ad5bd40ce7cfd42156f14349be9b6d215b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:43:26Z), 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/QZK6G2596183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1728a31a922133661768b26a8b39e8f40127a8ca53f0a84484a55ad63aab191b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZK6G2596184.
DAWID GRZELAK DOES IT BETTER (live from Borki)