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 0x56039ab0465df9bcd1311a55fc4fc09b5ce1aef67ab755204c6a9fc5737e53ca. 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/f7e51c5f-835a-4196-a623-d70117d24378.json and https://artists.proofprofile.net/proofs/artist/f7e51c5f-835a-4196-a623-d70117d24378.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 0x61b53f721f975c293ba99cab804f6183c47321d6789cd7cf0c1c2d31bbf81933. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBCBN0742701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce122c2a1eee9dbeb76ee5541c12bbf190d02fbb03e2b3ac13b74630ed8ef6e3. 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/GBCBN0742704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476568182a9815e32318fc0ed009cd3f8292d60f783c08b4b80729f4b053f424. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBCBN0742705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108663217d8148e949f5a935321a138730fdbff1b8ced8edbda41262ac01ed38. 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/GBCBN0742706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4aa0bb56439fb74b98497c46c479f44db9f3c608bff99c23e87ad7b9cf1ccd. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBCBN0742707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7f9c6951513ce82137856b8bed72065b51cdb6001496aefc428bc516975c30. 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/GBCBN0742708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1b075a21f41163b337a59bd3ce26cd7fa249f781a35b132e8d52b008c5caed. 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/GBCBN0742709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16305cde6a18007746878f77b183bc092af0a93ad67c37654bdb982dc1ba917. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:35:19Z), 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/GBCBN0742710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d4e404bc7e9d08d670d0e9676addd5b839ee657da36b926568530d6ac787fe. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/GBCBN0742715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6037ce2a2040c675bc8b4e2e994bbfd091ddb4565db70a69dfb9057b1fadc4cc. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:27:02Z), 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/GBCBN0742717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd31ec51a78e2f380bc8426a1366f5cafa4b1ab99a75075f9f74503a5cd88b5. 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/GBCBN0742718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b6d4ebf42fabc84418aa6fba600cd2496ac107c4d0b45ffd7a16c929b95207. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/GBCBN0742719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8ce071362ad8fba86f68753da815cf7f4b4ba7803fe668ceaf34caf10542b9. 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/GBCBN0742720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd6ecb5aed4c92d44070d87533ac4613760a8b451fc3e02ef67d2063281beeb. 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/GBCBN0742702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476568182a9815e32318fc0ed009cd3f8292d60f783c08b4b80729f4b053f424. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GBCBN0742705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108663217d8148e949f5a935321a138730fdbff1b8ced8edbda41262ac01ed38. 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/GBCBN0742706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4aa0bb56439fb74b98497c46c479f44db9f3c608bff99c23e87ad7b9cf1ccd. 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/GBCBN0742707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7f9c6951513ce82137856b8bed72065b51cdb6001496aefc428bc516975c30. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBCBN0742708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1b075a21f41163b337a59bd3ce26cd7fa249f781a35b132e8d52b008c5caed. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GBCBN0742709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec3970b05152d3a5584004d1298e34bb3357191a78c48b541eaed15d619bbed. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBCBN0742711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b9b49d6cb2708b6f6ef41ae968abe7c225d2d8cec9e66868b66d5def483dec. 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/GBCBN0742712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d4e404bc7e9d08d670d0e9676addd5b839ee657da36b926568530d6ac787fe. 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/GBCBN0742715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cb0dc0969ee06273fc4c1fcf8e2e97b3af0595f180ca74c26f9ea97761f7e8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBCBN0742716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6037ce2a2040c675bc8b4e2e994bbfd091ddb4565db70a69dfb9057b1fadc4cc. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBCBN0742717.