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 0xe940b0518cf661643f81f5262e6715259f384c645c19d73704d49f840e72b426. 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/bdca723e-bd67-4b64-9f22-6be6ab4e5857.json and https://artists.proofprofile.net/proofs/artist/bdca723e-bd67-4b64-9f22-6be6ab4e5857.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 0xbf1b4517ab4b3e252e6ad28af9ea5b9c23b789393043378dfd9fe7f978d07d78. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:32:55Z), 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/DEPI82454099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c222f01b27722b2623640cfef0e427c7786a2b637a348e8d92e3b6eed7806ce. 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/DEPI82454100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f44ec8cc9a8551bdae3cdb820605d39fe5a2cb47f941063d1b9b8f949cb6e3f. 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/DEPI82454102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9e9813e744a4e7a5421c3bbd56a25b736d6a6cdfb7532b87657bc3b238d47f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:58:23Z), 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/DEPI82454103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0246ecfbd27bdabb2eb745fc0dada441d56272df2da58cdfbc89d380580a9fa9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEPI82454104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ad1be9bd6bbea83ac2a645cb2448de0f7efa6d0dc0daeeda264a0f5706c890. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:26:11Z), 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/DEPI82454105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8594f95c03a8bb4a062b0b2f9e70d8f7ecb8109e0b0ae707e0c0d522e83f094. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEPI82454106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3378cae12fafcca8fe3f7064e3a48b93c1136899fb280c4c6f4201e95ad27021. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEPI82454307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069e54e5021382df3e7a2672e9ae5c5932e564ebadd1a7dafbd4ff119e97eebf. 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/DEPI82454308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05825a1dd8270c2f3eee4239214c07e9b63fb07e3666bde62949ae12e1197c80. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/DEPI82454315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbafa42268e42dd9e2abf4876e626e25d175e3bff60f6c17fd1f104b87d061c. 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/DEPI82454316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24b0cfe71e6ed8970eed9ddee8008a4e9aa60337695784010aa6745cd43859d. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/DEPI82454317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7783f18b677ea75a5256942325f80542503b318a2b64793ba651adb71c0521. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEPI82454318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bc5907b88b39b3c03308ac022db709afc6efb54152442f544d9017c406c88e. 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/DEPI82454319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6c08e8f54a3e05996024c9593cbeaaad8d2986eef41e058eca6a325ab174ef. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEPI82454322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad925e9ae7ef41eccaa2ba1c490784810856e3202bffaa84bc6827ce5e35a2f. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/DEPI82454323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cba2676d9301ccae74db730f5b2e5580b55081f6ccc4d1168e98588f2d5bbc9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEPI82454983.