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 0x32af3f6b249196fa1f5bc13a707df7638664dfcbf46fc1dcd0f95d79f0ed86e4. 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/6749ba68-1c48-4e2c-93a3-336c35cc94ed.json and https://artists.proofprofile.net/proofs/artist/6749ba68-1c48-4e2c-93a3-336c35cc94ed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Relaxing Instrumental Jazz Essentials with the Trumpet
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 0xbab4e222041252597e15aa8a993179689227d0128423d3c5eb554941873bbe34. 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/BGA472404210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f47cd439863b2ebf9360177e038f3299503e2f11d1ed5eee438e0db65a94e7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BGA472404212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a47113eea4662eec6b5ea77fce91a8bbf40744862becb5ebdb45a9678cd8be. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BGA472404213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf615cd55a4077b58325ca3a4fe8478d98f2d74689278509907348208fc7bc351. 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/BGA472404214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80a300646b287b1b13730fb41b2ff93320a1ddf61288418520a8735cc07171b. 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/BGA472404204.
Moonlit Blue: Classic Jazz Trumpet Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d08d5e62f63f868574394d8f0a3f64278789e7f07355f99687179b017f010f8. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/BGA472404726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1783feed65635fc16c0f0dec1b5abd20356f249467e8d576780e438289400eb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:51:16Z), 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/BGA472404727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1838fc79985a45f4b7698c1370104a6c1353a47a946a583908dbd62ac9c8b8b6. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/BGA472404728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35186729782fced1f768cd0b8ff93f687d54843d1493d35e3c80d6a088810c3. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/BGA472404730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d695001ca01da0defd06347b3b6296b91d423842d1b15782fee0ae6658c60d. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/BGA472404733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf17aef7da212694a78f9237ec297f06aef48c155ab17c8a7380ee86360db29. 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/BGA472404737.
Easy Listening Traditional Jazz Trumpet Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3610e35147de7bb37636e84d98df5e514483fa6bb1d8bda60f2004c937eeca3d. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/BGA472405844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45da37091fe640cfeaff1e25745db82334e1c690c6011f8152af33b465002f2. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/BGA472405851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f4c72617e456bf345fef89be504eda76562b5ba3db61b0de5e5964c7736a36. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BGA472405854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68707cee2131cd4a41ce768313c0239e4621cd47d71a65e2f21cee5c8de50d6b. 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/BGA472405903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cb5a5f45e8d224ed359e4ed86aa0be30c03824cf540d9a0dfe85b0b864485b. 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/BGA472405905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29571d87c1b293c3a625a1484b3ed5d48a3e6dbd05c0245d0563255392a91ad6. 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/BGA472405906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48df780ba39e7d93ad44251a04a2a4bb909ee171ed775e77e65879b582f4045. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BGA472501927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5ada22576a25878a5b40bb8364ecb7eb9612fa0dc958116ceb110e8f9d424d. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BGA472501914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52fe3d04022ce7278cb2d6b394f36dd3650093811f8f5ead1e4fa0b0b59e6c4. 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/BGA472501916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c5ce8d4f2732ed12a6707ff2f92c1a2595e92fd0dc8e40c809b833ce411859. 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/BGA472501917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba8a02196515fa8a67ba2cfd24f0e7397677142b19127bf18e11edbeedc51c1. 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/BGA472501918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40868ad0b4809faae88ac2b23c7a66db699341cfadc3f514f47fd099f54a31ea. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/BGA472501919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5893260d50576d9a204b004b40215a8c0d19404e96f42274f1e19f07c391789f. 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/BGA472501920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915ec0fba0bb41c0c94930e7445411668d01bd9623a5b45bb7401d2f3d996a83. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BGA472501921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305605a8db6dba2a719fcddf0e83a0534c2f9a6627ee367685d4c3abda95c2cc. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/BGA472501913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d6129dd3ef29ecfce265854bbbda5c98730481a79059a485d33dac8cacc3e4. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/BGA472501922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06b0c7099c9e9c9ec474d00596ce8e852c5bc336a208383fd2409a9e5446be8. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/BGA472501924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13fb1ee37958462ec4d4b723520091dc836fe6fbc46ba30a708ef3bb1952174. 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/BGA472501928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f7244ad6d960acd446a9b205b4a600372ed14f75c220153cca2988278a9215. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DETL61605799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e21656842e923c0880106a88bd4ba36b2a3d67157285e1a356ac4dd051f949. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DETL61605804.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ac1db9c08b00835fb44e84aa77ab4497fbc8d75ee47da3aacd616e63c598fb. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DETL61605789.