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 0xa496ae021e4d858c0c314bd455f89b5f4468e3d1cc39c38dbfe1f0b26dbdf3af. 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/8d232505-6098-4946-857e-9188f02c678f.json and https://artists.proofprofile.net/proofs/artist/8d232505-6098-4946-857e-9188f02c678f.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 0x728dc7add5a387b53e49f7d908b0edbbcb342b581cc5b9342b9e92bfe795c0c2. 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/ES71G2406487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb853fdedc550dbd5ee254487e83dd1a635a09c5a9d3e4ffd6709f865e4d482. 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/ES71G2406716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e81f879f8967ba116dd6e07328832531577210e2c9ab99a670d33f1b80ae62. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES71G2406859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ce206391f0eff7b0981c240d699913d94a1a998caf4d9ab5fecacd41aeb65f. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/ES71G2406856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9669efa612f7e5e7de1e4f6c58af980ffc6f6efbf862431c01782690bbf020. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/ES71G2406846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937e2b3979482a2dd8a460aaacf4124a60346945b35993b7985aef3bbaa57e87. 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/ES71G2406844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8a2ec505b6da969f3a2bf32aa963f7e6f767b286f8f73f7d383af1e1be5c3d. 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/ES71G2406858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5af17bda4cdea25bc1d892ee22fc9970dd468ca71e88fa18dde03b00bcbe78. 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/ES71G2406855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf124aa86efbef7d684a3dd3e764e26dc6bfbc6d788c7a185410601ff4c8ce957. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/ES71G2406850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce58d4c35ba1b5f4e874a2bb9010931d2050daa553ce1da9fdb3744f4a600fa1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:14:44Z), 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/ES71G2406851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a4f46c9a33b2a39d0132eb5d7f53c20ffa9ce2ff4760e5ea262144e0b20cb2. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/ES71G2406857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3ffee3f7bf6e1f3537a62ab51447533e993c404e54deec967071a540b5f217. 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/ES71G2407019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80432ae65b9dc432fbce9b369e0ac2eee559c8636e175f9602abfe3ff58ce2e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:41:35Z), 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/ES71G2406999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123e35b3a9d9b26ceb25390eac27fc9ae9ff36fd09b199f12038891006988aa1. 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/ES71G2407021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dca4fe7022ef2c088c9927c2a245d0abde6773103516d631e3640b67258bad. 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/ES71G2406994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbeb70d941608166080a879be428ced60319bae4677ea199791dc62671eb3fd. 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/ES71G2406996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701252b2bf3bcaa2fe3d819da2a3e97f0db3fc9320cb9cc6262b1131a7436f25. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:06:04Z), 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/ES71G2407001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38abe399a80bd99a04747114cd4e9417e2b18248e4616ba40c4d0375f47aa0e8. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ES71G2407018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968ecbb09c524b737fdaf559271032f8423a43e2d5d76429c2a07722d26613a3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:54:41Z), 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/ES71G2407016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb9f266a61b4e282cdd250324ca422f2965268989941660401a7082397114ee. 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/ES71G2406997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac5ac1c739d45a26f41ae13fa11cf97ac52a6117f6b6cf2912cb4144b7dc4fc. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ES71G2407020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa86f641f5ed2e4d43a375c214891119622c437dece3fddef7b75025786a0696. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:20:25Z), 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/ES71G2412657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb620a5761ab1d3001183d255d991a8e2f522d52f5e51c780e5d0cdb38464ffc1. 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/ES71G2412655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb85f05df153e5f4476339cd1ddd0784c65b6fcd26fb791d8532dbf5f37394ae. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ES71G2412656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e02073281864fb08cd93ca60074ea70658f5f399788b656f00959dd60734fb. 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/ES71G2412659.