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 0x1e9c2b25d058cb09a25ae8e3aabc7c58aa1b924045a46cbce839cdf32f55a168. 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/68c7bc00-d3b6-4224-af22-a8cc08f3f8e3.json and https://artists.proofprofile.net/proofs/artist/68c7bc00-d3b6-4224-af22-a8cc08f3f8e3.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 0x21e9c4e93c0eff934b8594ac0dbeea37e2241edbb2a3f1494bbc5712a3ee000d. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QMFMG2359550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5392dd545036a8875e1752a0f35362111f0f0b94924fd378ecacab0bdb5c4141. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QMFMG2359552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fc5357278099d8cc6b68be7fe6d31078c2591a4165d27d257586ba66094946. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:59:38Z), 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/QMFMG2359554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddecf65b9cb1c60058b3514bebb9e702c7487c7526d50ea298cb84f3e46f3e5f. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QMFMG2359555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2902b7be06db0f4adf050bf55c721db79723f702f2caa8ed38679d095f51e222. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:49:24Z), 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/QMFMG2359556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c11e5a5299dfb6af282d8e6c0db6ab7378a3969ffb074f9012341bbcde2a2ff. 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/QMFMG2359557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a06a99a48031f9a931e54c8c62ef52d3d9afdff9af43b4e99b4bcb44dedde79. 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/QMFMG2359558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf154ac0b64bd28da9d285cbb5fad8df4fa7a98fdd5b97121b74d51f1a4f208ef. 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/QMFMG2359559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84049b7b158ad929c72a965a6da63d6cbdeff5f56b2e48af3bbf8ce632c3e523. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QMFMG2359560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b173ee9792050dcbd266c692d327fc8595f749722844d283dd04fd30c04bbd4. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QMFMG2359561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8d3fba08f1bf1e98b417811fce7185e245a7606cb0c90c7eef7b48babd7ae5. 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/QMFMG2359562.
Auf zum Tierarzt mit all unseren Haustieren!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefa7ea234b92273dbc40624b14478b30c3e8cf4dfeaa53706e7a53d6e3db502. 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/QM6MZ2415107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db9af1ffe4bf9b109d51e46c19eaa12c2e37cf592627e3511aadfc6d1717ea5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM6MZ2415108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cef7206d361d0fa3f82f199c2816b743cd797f26f67432529f29be1bef1f8eb. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QM6MZ2415109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7e3d9c85d0555d1a027f5ace35861d02041cad529043db5a5c4a7cb21c847f. 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/QM6MZ2415110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df8dbf6d82b1c31035708c3af9ff1abb269d65c2b078e946e6928eadd9308c4. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:39:38Z), 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/QM6MZ2415111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5182960582e086fe5c116873462b0c3cfc56c3a5558c44c40883d34b88a4f141. 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/QM6MZ2415113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eeb9b2efe5c318015e2c7b9dc3a23d2d6316f0f0c4a7918034b0ac8c26f8ed. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QM6MZ2415115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede0d2dd0219fdfc7f89512d56ebcb0a27add6dfca3047dedad1f30c4bcdb00f. 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/QM6MZ2414948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cac3da49d4856346b8ce815eb2c39e26da00fbbb7e0ccebd7b7f907ced6e96. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QM6MZ2414949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7045028d12349a8be0a3b0acb2dd6b64215378c1fca7019220df6de5c87abc92. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6MZ2414951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb273130605d7de4c7f93a755fd259cea546a7cc4bf4f4ec18c61601fd5fc05db. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:23:49Z), 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/QM6MZ2414952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f863f4e39c4afa80138e68447a06bcf3a0bb7c9072a2e89555a039e2d8b6f4. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QM6MZ2414954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9320d961db9c4728791dc2323e25e5170f6991303ecaedb36bd8b3ba19605b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6MZ2414955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25e42bd968e51cc2ec0b2f71db89720191050c80ebba21a9f733618eca9d734. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:56:48Z), 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/QM6P42428637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fdd33302dbc735dca556c4f1f8fd6a5c3136194768d5b07a2c42bc0a134c64. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QM6P42428639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f497a1f8a2fe00fd146308a8236a44d69b33d8cabc9baf4e33da45bdbbddc7. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM6P42428640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62799a879b197c1de600c47c7681d0f4c00be886deed0743db15e61fcfd8b3f5. 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/QM6P42428641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88d3ef1a5af8391af4f95c34cecc867b8617da16b2d3cc6aa5c08dab4f62c98. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:19:32Z), 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/QM6P42428642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ebe2b6b8600f2c42629c292889f9ad74fe3c41e88fc33d3a1b1807d5373770. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QM6P42428643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a50ebaa3022c9f6d94f9b79617d714cb56be45bf77d406e04857a17bd54530e. 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/QM6P42428644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08f2bf596e334820b67454525d4c54cff1d004aae2d4b70610fe7f4085997f3. 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/QM6P42428645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58602dfec0a0acd4e02f8fbdbc60ab79877ae8e6daa47b4cea25f97d806c579. 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/QM6P42428646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1b5042060c3b609e80796f49dce147cb86683fb2a422241249b30ae314bb02. 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/QM6P42567143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed26c70b0378d57804e52524a60425bdb49b0ba9aa9e91296b76090b4a58d411. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM6P42567144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbd38ac0560a8a659fef6931a0c8b1ed207aea5bcb71428e16302d01a1ef17e. 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/QM6P42567147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaea5d3ab549d5bc559a34bbf75230290cf6ff5240a1fb4088261d4477b4b767. 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/QM6P42567146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b82d366f6d8703a3e2484918ecf6d31c08ec2ee5fc4ed518be7f860b891440. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:53:53Z), 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/QM6P42567145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd610934c9fae8823a7db902b1fc797e2d59fc29914c6b8a2be032795493b28d0. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QM6P42567142.