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 0x84a59534019ba36789e5e5ec928768e9873877764af382b8878568aaa17d2384. 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/289f2cca-0e6f-4d5b-83a9-fa4cf0a4c9bd.json and https://artists.proofprofile.net/proofs/artist/289f2cca-0e6f-4d5b-83a9-fa4cf0a4c9bd.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 0xa2cb02379e042ee36c0365bd39e04aa0e62598132e93d7d6ff630722b8354c8a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX53U2563670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4a03a32b6e87505dd5807396413582e236fa622ea2fe83dd72bc76126f5479. 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/GX53U2567373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec346f12c1d761a5355dd33c37c5727dd12f7f2d21f1afb278f576d00d03588. 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/GX53U2567455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f5ad62d9dfc7481f41f33a4d62e4ce20e374f8de5b0e6de0cfc85c1fb92a44. 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/GX53U2572305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c6998caa96115d56e0d759bc1db2f52b6f3d0ba710f5f027216a9c7319b225. 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/GX53U2577366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad6f114bfea888f284448e05812ebe8e9eb900d4c4648b4746980d2fb1c97b3. 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/GXH2J2501848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd3610ceac0b85705389140c1941c86f29b343e802d61f221d29f3a81d01406. 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/GXH2J2501969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa2535a8bea6095b1ec99626a5f72abbaa4706646d75bb1fd509c93e5b05fa6. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GXH2J2510073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01359887b558f709f3281bc656975272449e08e2080de3a0f347b4208b6a52b8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:02:44Z), 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/GXH2J2513276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352c7777aa9b373850a0aabb29b95fefde2a3be1d10e83b3e3e604817f6aacbd. 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/GXH2J2516897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a26075bde7c11bf97e5f14d6ad33c0cec1cb78e6baa24e928e87eacedae550. 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/GXH2J2535467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c787ebabfb6b15a4cedfefedbd68b31fe8b956ec47af93b82abcfc38e5d1f7. 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/GXH2J2531022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7576531446b531168f487aab22cf345e72f0a39bce9f931100f3fd003bd9209. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/GXH2J2530928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4bd1b7f281888730ba6d7c742adb7bf89cc51c7eb964e84159a519a747472a. 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/GXH2J2533686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf144f6555652c5da6fff3b2598449eb2b4183c6546fd711b6b9079baae42f1b2. 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/GXH2J2535418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24b84e646c2a519058d3eb376e9d6d7a04ecae7f6261099af473be66b4866a0. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/GXH2J2552621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe494b4799cb89cbd524cde209aab8f49da5fc51bb90fe3bcdd8af85e302c3ae6. 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/GXH2J2565481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb813ce1ba4c8b8572cd31c024b3eb68e8d18acae04e997a353ea9a09d93aa845. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GXH2J2578934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8c6ebf48f2486e04502f56de418fa976ba16a5b6757375232cfb1e2d482b8b. 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/GXHAF2507077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae797b6f2d0c45fd97f13a0d0cc9fd6188f5778cc90a5db68f5372b3560c14f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GXHAF2519268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ff0fc039eeb519693225bfd2184433b0e5d9a0bfdbdc3593cbf1e1b03b67fb. 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/GXHAF2519915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f9417c8b186b5df4ed0f33e50233bc4e16b428624ffa143d778c485352ca57. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXHAF2521581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef5781f7c33a59673ba83a5c9b499028be9bc41d3888b8d42aa28e48f8f8da9. 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/GXHAF2523537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda41621fc7fb900a37edc4fda5a71e360f0514780a29aaaa7fbf94753dc51c4a. 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/GXHAF2527231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5ddd8539fa95b378a3ecb4f2a9117636c48bc96f4067b620a2b26f2668a74e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:47Z), 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/GXHAF2535911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef82cbdfaa644a087cb3e99a7942f7639ee1cb60eee8db03830924d047c90de7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:05:01Z), 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/GXHAF2534065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd932ab032d427cbb71a2468bc9df1daa2ba54f9004790dfdc174804e172b07d0. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GXHAF2537800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b3098cef3d8e3450ea074e5a95e31722a87762ece7936c33bb96ef5b41f341. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:54:15Z), 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/GXHAF2559248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396ef2ff48d9483761e45d3fd0fb87d55a6ad3c35d93259da6caaefaac061a2b. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GXHAF2587582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33fa27290c7773161f97e1d1068abe4f4d4b2b45e02235d7d6df7cc3018774c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:01:42Z), 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/GXHAF2595137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44031a0d929953b00a39c99bf13a802733cceecd1e77bd5f46e6e6a6ad9f5ad. 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/GXHG92552310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415b7c148466b16342d30c089026e5bdc599590638bdf24ac2577db105c336b2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZZ7S2578438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc407a99da3dda5ef7580b29fdd888253fe891ec499bd008ac89d415a0d90a76e. 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/QT3F92585915.