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 0x5c58f581d454ea6f50dcab63277933dca13249e4f3828821f4c1b0fca142f129. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65db41d7-eff2-4d05-82f1-62cdcf51858c.json and https://artists.proofprofile.net/proofs/artist/65db41d7-eff2-4d05-82f1-62cdcf51858c.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 0x727e41bf2dfaf09034b1157f3c0db0976d813292d159c461959510ba2066f866. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:53:37Z), 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/IL1010101358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212166bd00348f86256a0a91df0222707713b872c37e3440b1076789e41507b0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/IL1010101330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9382d27147e30fece24424247b29e303a1236022dcd3da2c8267d4a4b7e2af95. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/IL1010101331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c77c34e955805bbe74651093c0be118127d673c901d18df67a61512552fa7c2. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:09:43Z), 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/IL1010101346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd2d80302b0eb2c7e9261144aae698aeb387973565182731bb7b0245ff555ec. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/IL1010101328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e618cc7f8a5b6c4b96d69299c5fa2762adb42f1c4c10e22586974c75252908. 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/IL1010101341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277ddd12ded70686cbdcbe7ca3c07ae49d91e0cc14942c4027a9d0fe1e5fd1c4. 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/IL1010101322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d7e784a7c57d20af80334126b72891d1db17bc9a351cfc81760aa7ef9b0753. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IL1010101354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a240a4c9fc57168554d146bce0b81ce73c48d138bb3a0820ffa7ee7d31946a. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:49:03Z), 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/IL1010101323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde219d225234344f68000b9eeacf0cc443c3acd66a3be24c70eac63a78377981. 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/IL1010101356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e5c77b0a8f4171f88301912c4bcbe2a4fdd3a725e1871bb1b2932da08f1bee. 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/IL1010101359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfbf6d48b3cbf19d95f879e31d153acb57ef35b8b809b0d00ae011a5a627841. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/IL1010101363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef0aa31b0d6838f338e517753a8c9883eb7a88348c44764865301f0f6612fd4. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/IL1010101337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a76c30334c07e42957b15c7f1db9593dc0544322f9203d01d9c1a22ee8fd3a. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/IL1010101320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f7ddbe2c5fe9cc597a5ba182a08934abf31b2aa19c3e18ebdb18f7be366408. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IL1010101350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0bd21aff3fc8677974bffa70c40d6e62e6652d4a630352ac9c7080d130dc30. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/IL1010101340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fb44880d2950f5f8b9a3fb56202018541edb2f6e2da8a5419a9899e18c6906. 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/IL1010101355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb85503b39dcfd1f3f704ced00e6fb248d95b55949b02c0ff5d1df952bee5f11. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:16:18Z), 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/IL1010101362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d7d930b369405863a45e881ee67aa1bec9e04b6e9341c09496b73c251923f5. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:02:31Z), 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/IL1010101339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d1efb6506701e48bd5d5715312f28214515ac80fc5006d935a827de52a8623. 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/IL1010101334.