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 0x0f4c830116b5c9b02c1faee2d3be2d0fffbbf9e5588e48a85f7296c845ac7ddc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c68393c-6a93-49ad-8971-7ed0727bb472.json and https://artists.proofprofile.net/proofs/artist/3c68393c-6a93-49ad-8971-7ed0727bb472.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 0x5a22a2d8aea087fbe624f999b0c34c350488f5211b56dc161757732abef73ac8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:01:31Z), 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/TCAIH2461224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff55363929062df4a7aa2459c320d953f3fbc3378c4fa854da059b6ad8d2396. 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/TCAIH2461228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afc7f38618bc2dd3a708e3c5260472d02dc41f649fb5391ad19ff428f7d58de. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:38:34Z), 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/TCAIH2461232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ebbebeeabbeb21f18f951c3a39c18479d39afccbf19d1bafdaeb1b10d6e0d4. 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/TCAIH2461240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed770d6f389f918cb7ad451b2dca4a25a0b08a49cfc897ee28dd997282d469f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:40:42Z), 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/TCAIH2461246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61514309ae82d41646bd08e96dcbaf15f62cb873e8ca3985ed2d41d72e69ed79. 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/TCAIH2461248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bf9d3451d0c3a6d7ef008bf115be4880efef81ea67302dfb2ea4f17a5dfff9. 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/TCAIH2461252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12ad5ee777ae2588d56d1b75180bfaaf73a1f8e5d232f1916959b896df93039. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/TCAIH2461254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb576feb7587478b88c9b88f9891af66457a99533b00b6351c40e5ff506c577. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAIN2414576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2a6a2b0f9e676a88eee298a7fdc49cf9c747a08bcf4a18fcf58d0f88955dac. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:45Z), 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/TCAIM2414584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38835f65e6a9632c6aabcebbc342c59771bfb83fa66705372d67ee0ffc5f61a6. 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/TCAIM2414591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf05b74bafab2c250aae817fafa23bfdc4c9b0b6752d790561ebe9b44f037069. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:56:30Z), 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/TCAIN2414599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc45535844c7ebf8b7cd9ae1e72fb82c8f60c40e25786594a806bcc27f326f0. 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/TCAIM2414604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a508688290afb6cc7ccd19c246d4e564757bbfed00b220cc6b46dd42cf0387. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:42:35Z), 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/TCAIN2414610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423053053b24db7b140f3cd403486d3672f942b5e21003cf218987eda9926510. 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/TCAIN2414614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24579c4ccd8f511ba6e23a44d9859654119926c2188ddec4e4b0ca388ff5c612. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAIM2414618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9737f4cc84969e4ac244859cb8b9f84185c232905627ec3e3d5a992cc08e43f. 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/TCAIP2491035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf96558c0e0baf4636732b02be8fda791e646f293908e69859c688b4938e083. 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/TCAIP2491083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda346f02123393a5210e93d8fcbfbcfcf7d490c5876cd054bb986656120755e7. 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/TCAIP2491039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776774ff7329e1a57b2e40954c05206533cc088f6d58ee68f0679904f16df3ee. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:58:51Z), 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/TCAIP2491043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc061a19d80400006c76e45c6eb8df10e10b6fc2d07ceebbc7027ea6a5340101. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIP2491045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fa1c62dd8eeefa8977cae74f897269b54c8928314e4a5c148b312923cf1102. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:59:24Z), 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/TCAIQ2491048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a4f45128f44ff740efac8c090cb71ebc4f2200abbff1b92d8900b14738e551. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:05:20Z), 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/TCAIQ2491051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e92e88dc5babef51fc7d0d2e29161af2c88a0e86856c87151de85769db69afb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:39:17Z), 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/TCAIT2497537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d854498b83e81e13362ce44ef11578f13f23dd317f94556a7137b2f935515ce. 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/TCAIT2497541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ce17f040205de377dc0c65ccc10a2389f87c3ecd90d1e8fd7d18dd9212510f. 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/TCAIT2497550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6350b36d5bbafdca64ed792f16438542711b228b097d3308a62a8d9ce3d290. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:54:15Z), 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/TCAIT2497553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e36a323b6cc30c52dd05c98a59846b52ae5e4babc9db718f83b3de81ccf53a. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/TCAIT2497557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1631c4f5913ebd98695874eead888dd39a9b95befa6f93592ff319f3fe4c7006. 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/TCAIT2497559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d57d9ed50a59ebdcbbe8a6084a5bbf5f7e6d1170fc1e92a88552ea982888ef. 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/TCAIU2497565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390fc1599ff9cd75f74ecf6eb07b98f25490757f0a82ccdbc0816f33de2ee796. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAIT2499273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e786e4e03d22358aaa31e1e2a55641922cd6417c88b37f5cd554b6ddf9af08a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TCAIT2499276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d76efc18ac7d61924068f945a54bacd14c1cbfeb9badf490f340234ae368afb. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/TCAIT2499296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe9d4a4909389fe3b025a9878f5f27ffec801b934924c2ddb3b217452783bcb. 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/TCAIT2499304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be4e3f5d79181d73bfc97b14bb2b4806b390a5a604d4fd3bb73bd8ef210eeca. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:10:23Z), 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/TCAIT2499307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa62db482c9cf9e41aa9691d210b18736d79073b645d958e04b30bf58d371a8. 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/TCAIU2499309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7031fdeefafe2681fb86f76c3b43c2052e7df956a8d1b00f7fdcf9ca59151349. 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/TCAIU2499322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905be98c3e6f792cd289d22521237ecdcdd3332c5239f92fb9a3982ee10cc1a6. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAIU2499336.