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 0xca1c65fd150123160ae70306467d7ce95237ebd3b434281294e5e0c1f830dc32. 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/ee5e1d94-f31f-4007-95c8-8dcb3d11bb63.json and https://artists.proofprofile.net/proofs/artist/ee5e1d94-f31f-4007-95c8-8dcb3d11bb63.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 0xce74fbd210113f390ae512f7fd95239e6cbd7978dd3fbc3edcb16e32fec73ac0. 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/CA5KR2456102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03485654e41f4af8774a7eeef439a1949f1d019e770548f4e4b5a7a0d4a47490. 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/CA5KR2419685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe356e526ce8ec21ae48cd79f27c5537232313687ec989e6efec21d687083867. 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/QZQAY2372510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b4d14068aaa46d8d91d17e6abc514e3113ed12ae5dd48d017ceea26c7cd254. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX4Y82200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59324a92291c4fb9da6bc112739591d30996d849a8d61fb9eff23a19245b8b8. 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/CA6D22300332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f029fd65a765af30d0872e08a5fdba432d64ad12541e55336c6ac13326cc2f5. 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/CA6D22300187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ddcd85f1babb3d7503b5d37d3ef9e6e1c756d3f7f1e6cb4ae67a04192b361a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA6D22300268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d232dbad2be5bde335078a26d303be91866c54035f80141b95d01ee09f48f4f. 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/CA6D22300331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600e1b2f287adc7f6ea47f8cbec57a38d51b63be223a16efae66b5bd46d7823b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA6D22300330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96d0bfaecd3eb958fcdc9516903b058350ebc3fd017b3278e88d26020293afa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA6D22300250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057f53e24b89e748886519a3eba865fd0958d7d8d674a25d1a76f087892237c4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA6D22300329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6f4b0e0a47218e9438607c055065b4ddf6a039153a44bedf5077de7f7add89. 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/CA6D22300335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa50ba43cbdd010b4749fbbb21b47feb315920423738bef8c36e0332356fac52. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA6D22300334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d76611eaeb3e7a9fa443a512d1b5be11238cf866498119138c0ae607cebada3. 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/CA6D22300333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd394fae449a033fa8102a177ebe1f8749312a9bde1872cb17b9ead0edfc7bc26. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2271223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799442ac8ee5adb836b857ec6d8b2ee04b9fa4e3bef410cde3d8691ad80c8ef7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2271224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73baf091158b95c76134cc080cdb64b825e4821d6c12bf55683b396a76f362ad. 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/CA5KR2271225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9314adf041e0626564817ec63a00e06b8c6ff11e65fd325ae9d8a6465d793d65. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLRD52302371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74975efa3b994784530879ab81bf8ad264b7583ff335715b6b7b378f2d7ecc1. 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/NLRD52302372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37348db55b1b3cff2117307e98af695928f287133c74f376b37cc577da31da0c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLRD52302373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce74fbd210113f390ae512f7fd95239e6cbd7978dd3fbc3edcb16e32fec73ac0. 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/CA5KR2456102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cdc8807df20aa2ac598d7c06ae6e91bf76e46b18e79ca3d84a424b3807b81a. 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/QZMHN2068482.