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 0xaeb3dd4829a047d664c43529e03b25a0318b0f61f688a1f41727e7d7cab0acea. 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/8ed52777-b335-454b-ae37-08628b9d4bed.json and https://artists.proofprofile.net/proofs/artist/8ed52777-b335-454b-ae37-08628b9d4bed.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 0xbcdaec1bcaa9c0a9b7a7c7bf192211334625ec5b744576282e6b5b5da6d974d4. 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/GBKPL2171651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390de34513979da01a2c4242ada8b01e62221c9e56c33b31cca2ec5a6f9daa8d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:50:56Z), 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/GBKPL2166679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf75631100ec4cdcfabb40e1b1a7914a08571630806de18826be0589f14c4812. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/GBKPL2171652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474375ba97a5ba49a8b7265ee15638fd41671d777dd183f75e6c01d4c839c5ec. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/GBKPL2171653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800445271cf096b64f4326d34649140f5a4a0286a838bde25772ffc44544fe37. 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/GBKPL2171655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa6df6f0311941eaade86ff9a02a307269e99b752191d890eaaf283be4bd45f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:17:17Z), 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/GBHLW2400711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1281f5c2c45ede8680db5cf6b5b4c9a35082e3670c402712e89b3ba990bc3fd8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBHLW2400712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dccd59f7b8f9e09be7dc6945d7438819eed6f4737127e5b683ae2d9f5bb1be0. 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/GBHLW2400714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4732478c031f0452dd57408292142be33ef7f7491d6e088c9a90788f1a8eee64. 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/USYBL2402207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75031bbbe7b063cbc6b9563e2308ed433cef87a6a5076915c22873b68b51b75. 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/USYBL2402209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae3964c036a6187ae5ee921e5114529d0edad681be2d42e29ae38d9805b172b. 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/USYBL2402211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d32d8a2d49bfef93c3098b2ece10ecf02ff8eb68db38261e395b47d3b531e2. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USYBL2402215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037dc1449f055f7bdcb4885437968ed09b541f5867d75d83de46bfb9ecc7601b. 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/USYBL2402217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f725ce4a14e3a533548bf27d78314e956d08fc136e8c4d3c474873ca88d659. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/USYBL2402219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc625ee15bf46dc91f81ca76bee8b891d45a2519def96cae929e2547aae189bc5. 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/USYBL2402221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb940986f60f7a79a51db9e24b70c519d562f530d6e788070175e0149ef07a42e. 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/USYBL2402225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd113b6300447872b1c7597825b983886cabeb5847cfaa4064226c878ca4419. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:47:58Z), 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/USYBL2402227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6570e03211b6d7b5c9091513690bdd0d95f185f09837ccafdaa4d6d7a91baac6. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USYBL2402278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7fa3d6673ef3b8d66862cfc9a0bbcc8f0bfdfe49d49252d9044544e0dc3829. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USYBL2402231.
You Said You'd Hold My Hand Through The Fire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cf8566c43d063a81c2e00fc618190e3c7c4bba83b3c1b2c3678fe350d65d83. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLZC2400012.