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 0xf62023db7a61575715de42803f2b2bab1091dcfdcc6fbc29981a6d393447547a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d470c8f-4304-4055-9d4f-9601055ad00c.json and https://artists.proofprofile.net/proofs/artist/9d470c8f-4304-4055-9d4f-9601055ad00c.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 0x07e6cc16827f2db18623750ac6ec409562fb86a07c08572f97799d4eb0452297. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAIA2455377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106d9d62f05693c7ee0ee99e8e6ca153acd6f40f0c8ba76a6d4af0f4b1ce95dd. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/AUMEV2456469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e6fa189919627cdf255761aca36d8d2ac00fe5f5e48fe712b316c4b280404f. 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/AUMEV2465922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef850732222d57c7b85345ffed11bc7ee5c0489e5cfef5f6b1e18579074d8832. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUMEV2486749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f819d8fbfa2114887ffd18c47624f5826499567b3c162343f44d81615e8679e. 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/AUMEV2467426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb124e19d31a62e38c8adb017035eb2476977700220eb3a6a2a9a8996672b5008. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/AUGBT2429117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627019a1a901927fb955c42a1527712a347c331c6526cc5e57736a857cafc77a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:32Z), 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/AUGBT2445001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff5831bd2230c72a50df4cd42f6b356f31b9ced47d6fb7c08ea0fb3360e6276. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/AUGBT2447156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc4fee1a44722e1e67dfa0217d24e091708ae4963312e293e10b7c13f090263. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:30:23Z), 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/AUGBT2447165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b372a9d0f10b4925d910f1d2cc713acdb59494b8f978ee4573e2fa15a47375. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/AUGBT2447167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cac99736dd4a55059352ab80acdf86d49cc2896eacec0756b6af613140791d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUGBT2447169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20d6f28d206e349e7bdc28af59282b06172db8a4570263faa42b71b6cfb6673. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/AUGBT2447176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8769f3d10eab090d6b59c1d060836cde2d097435c6882b6aeb271fa39ebbb22. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AUGBT2447189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd50469956aee38fae8e44b8a235fd222c9e636e5990e88d113202f282cdf197. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/AUGBT2447191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14764f941e8613984a0399217c16700f88a33c387f0d68ca74e8dcbd13e4dcee. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:04Z), 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/AUGBT2447192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7236a17d1c36d8485e4d20a2b49bc9ebc639d64654e272c7eae8a2b94e06ef48. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUGBT2447195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f3044bcc19633eed565ff105a07cad2d5f7b599efed3750df5fe17151db11b. 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/AUGBT2447198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c7b8f48b438c88b573a0c882f6832b4046ea7062f41db56d872cf19a5f016e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:09:32Z), 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/AUGBT2447166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1a65e8be2ac53f3d872fd2d5873233a678ea6c63d08b631daa2dcda4aabf17. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM3DF2402770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800ac8f4662e51b3e4d881d86e82fc9ad81aaa07fc09ef6c580e157bcfdce324. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/AUMEV2502207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9245016ced4372556bdeefa8b14d07f4faeb246cce4a11bf1b6ef504465c8f8a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AUMEV2590704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc8dc30dffc565430069168091ed298c3b46fc775d4d430d482339e6675d1dd. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAJX2547236.