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 0x7502d2a1e2959af56461ce6a1003fcdd05bba549703a5298486cb4e972f948fd. 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/218cf640-d18c-414b-9fa7-42f0e6b8d4e8.json and https://artists.proofprofile.net/proofs/artist/218cf640-d18c-414b-9fa7-42f0e6b8d4e8.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 0xbca3ad2a78ccd91c4b34b15f54a8784fcd903ab4b6dca317090ee80e4f7164ee. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:43:25Z), 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/NLPM11724431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca3ad2a78ccd91c4b34b15f54a8784fcd903ab4b6dca317090ee80e4f7164ee. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/NLPM11724431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2389ec393840b88186e34103527471605bc2bfb898d86a065735175707e1570. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:39:10Z), 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/NLPM11724905.
Maren-Kessel Tunnelrave (Official Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2aa0075dbcd00b36e6f5b7cc8122fef02f1843f63982531ce6e5c54990d30c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/NLPM11827887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07032eb7c3ac2bceae9a38d76a712a971b5c7e32a47ff5e129b89650db18dacd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM8DG1950274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3c029cba403c99428d568bedd35557094f4c6f7726fbcf67b5dd6a827fda91. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFYX2433130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb31e7a0fa2f302eaf3dcf2379c554bc520aae08c8d59dc9a20fa4e6e52c73a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL1S62400641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460857cd22a63ad48229bc70ee6aaf3cc5336b6ec745411b0295c7288d8a9b73. 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/GBKQU2582425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06abf6796bef253ae17cbee2508de483d09caa38eaf5fd8856b77864a6e2ef5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLRD51960116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56b5cc5cf2ee0a6395e2f59156cb414f26f389982fd732ed4b31de568a518c5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL1S62400811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583af208b615c8e8008c89f33a5eb564b2b844e56c9445e45f706ed6f363d56d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2502586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07ae75651262887e99c89c26bcdc52fc613fbe35934b4f287886a3bd7f37c5d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2352119.