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 0x45966ea9c59a4c55c143b36b6ea561e18d650b56100e39e83d01d78b3d7336e8. 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/1af4cf1d-742d-44ba-b889-0fb4fb7963dd.json and https://artists.proofprofile.net/proofs/artist/1af4cf1d-742d-44ba-b889-0fb4fb7963dd.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 0xa6c24d3550c48a4a3b8c2b61fbf3418e037d99dcf58c30b46d45d86a651b2f80. 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/AEA0D1985422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2d95ab62449beb9a7c6a83f4ac900e162959138dd923a92c365144333c9855. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/AEA0D1985423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95e34967158a2e514e99ec38ec4a257c560913ff0809b7464e573a6b376f26e. 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/AEA0D1985426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7928710da7916aae3f48da14bc4b8adad774485922d718bfb6eb10ec3995f174. 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/QZHN71910934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dc784b3d03c740e7e0be9b94294fd0c51d7d7bdf64d0baf316b6e7417e6911. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZHN71910935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25938e474614d3dab095e877282e68ecc1ed89f6fd34e95d91e367e1bfe44034. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHN71910937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f6cde5511eec1c43180adf48adc8269b4754adc3014651a198c1ef88e90354. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHNA1940231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250d00b2c3458a9ac019ab3e75ada681401c2cad198127af96077417671e3fc3. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHNA1940232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae02146adfc1cb825fa5dc1ec51d7b850436d8f209c70339b99eb13284e5623. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHNA1940233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3abc43d8c557fba99f450a3361472e1d9a6c5bb6303fcf2dd163fcc5fab7518. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZHNA1940234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fc830ad5c1740ed3247b7410270ab6a31a764a451d00989a84e7e0a6f57cac. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHNA1940235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019254963867710f47ea6eb72470259f0f1dfa588212c116d9c18fe7154e38d3. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZHNA1940236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5aeeb57fbf28f32325493bf7a084ae6a57004a85492e13db6d7dd7c795ba54. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFZ62071628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0851357aca860c7e550782cc0085a5b56e95de9b8500d90190c7b7de54fa7423. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFZ62071629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4c19d6600c6f083617077bbecee923e5baf13ecaa7603d232dfacdc9c0a6be. 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/QZNWU2012117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028444a670b2b6059189f453989b02d6f75304faf58ac0188e54c80dc7a8a165. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZNWU2012118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e6218a288d80b240e97a9de8b4afbc134869a3d5be59c7a3a93c83b8255604. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZNWU2012120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2189d64b88c22c3ef367bd3e3a05380f64a990df3d9237fce2a1ce4373a0169. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZNWU2012121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9d83eec121a7d9d787db8f6228f5d5f3c767f6fdb00ecc4f528203dd313f98. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:08:20Z), 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/QZNWU2012122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f63579c2d66e2683415830ce12fcb54a1534f182c86f623f0efce704496f398. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:37Z), 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/QZNWU2050402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb955124669bbb351e28d806b654f4a9bb6f02e639b79e5bc99299f601b2744d8. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZNWU2050407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10f3fd2e67569fd91de3a7892574a926485b9108566642550b297bcacd16ffe. 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/QZNWU2048718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e04059240f62b3dfe5f5df73f2ad07cb2e023a09176ea05525c14fdd945655b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:02Z), 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/QZES52120902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d969a0b021a2a15281fbf7509846d16601e8eef1b97381d6efc83b65a4f258. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES52120905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1452044b8b2af9b8fc45138927cd7d0cb1519defc685b5b32e7dd6722c4a988. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZES52120906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd211d04e62d498921899009adfc3fdea1eecd580295a2db421e115d1bc573092. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZES52120907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5275c2b0d459114dc819c9c463eebebb406a4c6ce4f522cda6696f3b87168fc. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZTAT2388411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cb01cfa45bb0d5e1ccd0ede71b890477a516f6001fb982aa2aef14387872bc. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTAT2388415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8e68ec67cde708ae1caed7803e2716b26e3a75bb044a13746f7ec6ae470ded. 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/QZMEQ2450209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c230f10ceaac96efe31923ad35451654206427a5babbebbbfe6535a8e7da8de. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZMEQ2450211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde725165faa7dd5b31ca55f0c320c17fbd60f37895399098470cc565b55867dc. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZMEQ2450212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec9921d9c69ef6f390479e32aaf646eb970e4595fcde5b7ee8135ea1293354e. 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/QZMEQ2450213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbead1604fb4e1c8e80c32895e5352a41a5d830728f33c1c58c92eb3bdf13c0c8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZMEQ2450214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdac144fe186079597af036267a318e8576f46987b39b4f9b2a16ddf4086376. 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/QZMEQ2450215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3b22303fd757ceeeedc41cc4abfa5940cfa70837daff29c1cba1509aca0289. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZMEQ2450217.