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 0x6ffce0a536a7c3d8149ec84710a26761e55ff22bafecb9d1324f186a163bbcda. 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/67a482d5-eebc-4092-8c5f-9655d27cf99e.json and https://artists.proofprofile.net/proofs/artist/67a482d5-eebc-4092-8c5f-9655d27cf99e.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 0x1ccdb5915adc2ff9e4d614672fe3bbfcf5e4a936d31321d13fcb9d441d280db1. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DEH841500340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d51520c41e357671683bba828433d8f59c0f1ddd798639befe6e40460a260ce. 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/DEH841500343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc825a50351ac27b4141b99f5b721718451b93a61d82b490414a6a1461f9fde13. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEH841500336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccdb5915adc2ff9e4d614672fe3bbfcf5e4a936d31321d13fcb9d441d280db1. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEH841500340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d51520c41e357671683bba828433d8f59c0f1ddd798639befe6e40460a260ce. 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/DEH841500343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584235c46ac31d0bcfbde358b38b852916f66e0d67283de1a5da3e1c53010eaa. 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/DEH841601117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c99f45281a197fd71b8a9e995f90785449ec3a210f476696c60fa87b1fe31bf. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DEH841601118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5b69cfc82c7897d4fa026e0b9bc6ecc3789e5304f7242556c1fcb8c1e3c5bb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEH841601114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b82024a6ec6be777c3ba7be3136402114b9e6111ef351bdc0cad84f74e8ca0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEH841601116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584235c46ac31d0bcfbde358b38b852916f66e0d67283de1a5da3e1c53010eaa. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEH841601117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c99f45281a197fd71b8a9e995f90785449ec3a210f476696c60fa87b1fe31bf. 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/DEH841601118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e79ab1b991305e914c03ba00e698adc47e928db0740c20605434a8384d3174. 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/DEH841601119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a277d69dbbb0449598eff16f708bb20c4e9822a20067aabef70574b46fff845. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/DEH841601121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60d05c1d5e8d391461603e03580907a69c7a9b046a0473c476def3001e2e895. 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/DEH841800653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60d05c1d5e8d391461603e03580907a69c7a9b046a0473c476def3001e2e895. 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/DEH841800653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03579b48aa5d3094ee4d59941d3a4e35ac58ec8fb4b33bd7a9dc903661541e08. 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/DEH842100259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b806b3006442db73bb8231feb6e1da58fcefa4d63aae0257e5a4e30e0d475e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEH842100260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6f52278e091f6964e446a058f9f1cd37e3093b9857ced026e4456c4de6ea2e. 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/DEH842100261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3140ab0ba6e9c766cd400b2617b45251d14bc888040b476667d4ed56d180d8. 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/DEH842100264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03579b48aa5d3094ee4d59941d3a4e35ac58ec8fb4b33bd7a9dc903661541e08. 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/DEH842100259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b806b3006442db73bb8231feb6e1da58fcefa4d63aae0257e5a4e30e0d475e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEH842100260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6f52278e091f6964e446a058f9f1cd37e3093b9857ced026e4456c4de6ea2e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:51:26Z), 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/DEH842100261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3140ab0ba6e9c766cd400b2617b45251d14bc888040b476667d4ed56d180d8. 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/DEH842100264.