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 0x606565af0518fbdefd55bb47e519cf77346ab014e34cba5d0be099dd351a6c98. 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/792f0f06-4df9-42ab-9721-e531e34cbc32.json and https://artists.proofprofile.net/proofs/artist/792f0f06-4df9-42ab-9721-e531e34cbc32.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 0x2347386a80355257e6d34a25943aad0ac9d8676799eaa404c69fa305d89f8469. 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/PECR22301451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1cca0d5cbb45d72b8a515e87384db956e117ab537225537177c40c5b323e5b. 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/PECR22301452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaffea79115b08db8a6c495e78150c34df5c8336f6f04012c9ea2b20fd0daede. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/PECR22301453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e60c6bdb53d4c3b7a8c782ad7dd932baa96a49b27f06ef74628cd7b4ae85be3. 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/PECR22301454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97df60b520dc6d16b98a8e90eea9c7efb309cd1616ba882ff2a20dfb38f4502d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/PECR22301455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd235b3104fdd658bc2fd2c27a9107f9e83f515bea5308e764c1e1ec3247c1f9. 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/PECR22301475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acfbe833a90bc85ba7a99c5808e1cfdd073543eb050313cc52176f7e90830a4. 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/PECR22301480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bd140b8fae32162c25a51289905bfae0e3c9a2a08b6f6538f3cd222796e2c6. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:33:19Z), 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/PECR22301486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00690acfc41a785590e3690a9a63926da7a8806d846e1f33b6db2eed30d81167. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/PECR22301487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4505efec5d5fe0ecf615ed103efb48ea66d26d2a0bbd4023c37257c00f89120f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:00:04Z), 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/PECR22301476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8af8d0b29f2e5d79b84d31545e00572d5121c67f7096fcce14dc7f4b029ca5d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/PECR22301477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc397617db826dae2168290f14c0050d67f2b0449c92168ee4e8b3b4d8e33553. 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/PECR22301483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64a41a8adafe84d09a15d911d94642f4d06f2f1e830510c6ebae5baaa343bfc. 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/PECR22301488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3659126f4bc1555eb18c5ff718b490a0e86cdb809cd74f89f42db5a4647942ef. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/PECR22301446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ffe7d33986820f0c9053f003b0b7954f56617188b0b6235f2aa1eee5bedb5b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:49:37Z), 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/PECR22301442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08fe224400afca2e5422a8433949822bb3eb3d64285ec7186260a613dd067b1. 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/PECR22301443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947442423c3f01ed34b4d0c97cdc35b4e9123aa97749b1443045aa0d628db69f. 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/PECR22301444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b8a39ec2a37cdb2fd4aca882735a38e78a125101b9b2d07e404180275b1769. 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/PECR22301445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef5f7b97c658bdcd1958b6cfe6626ba0acdbf669f888cb9ad970d20dce15b2a. 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/PECR22301449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b31664f8cd258e5dd74642818df492e626ad79b264d5ba84f0994c1656cbb1. 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/PECR22301450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd676812b3e078e986686fde40d1fdc7ff5138e6029948a9df3dedbf95e89f919. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/PECR22301458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d78f604db085e5f415304c50ec5e68114503312b995db78ab71b9b50b34362. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:28:01Z), 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/PECR22301459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf13fe8736d65200d7eb979eb22b30cb268f55e34db1fd59d90425d7bea6139a. 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/PECR22301461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4811f306350806db4b020a38bb42342f5fa152b998d3b7aeccbbf16321d199e. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/PECR22301463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f90b7bce055311586b1b2c79675150b6f55e84b882be3430c39ddc046fc6ec. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/PECR22301469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f90b7bce055311586b1b2c79675150b6f55e84b882be3430c39ddc046fc6ec. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:46:27Z), 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/PECR22301469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28375d02e9a9c8141a12a29840fa0ca8c5760d73e6d7f48c57884502de201631. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/PECR22301744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c86eba8ed9238fae1ff0fc65ca5e8e5091f9845dbf26b8e564fb28631d0adb. 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/PECR22301745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377a283c39f130a6c0d7b255698b0ac95d932e07ecd74d93f2f94b55946005d5. 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/PECR22401044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdccaf9c4105c17f75df2577294dcb846688369e6a800da10208b931d11d8149. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/PECR22401332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f6d5b065c9245a69e294a064512c7f597fe6ac8b2e8c38915fc24f46e92b9a. 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/PECR22401331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1afab0be0329ebc99f7e51eb22659a6e95ba419c5189467f91f133655eb7f6f. 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/PECR22401347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4270b56eea01bf5189418f44479de8e1f376381f39b232faafba59562532a763. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/PECR22501676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ca60dbde1d73cc42733ff5b36250ceee63823e3cac14a822ee4d48fa2cfce0. 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/PECR22501706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56d7489086c55d7e68a19c42a06be7c952d5d2736a683c40071e2a23989a767. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/PECR22501807.