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 0xff9bf68401184c45db0e2820954caee16aef7f66e3b07dc985f1dca8e1e75311. 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/7b55606b-5e11-4d2a-a444-25ed5c93bea7.json and https://artists.proofprofile.net/proofs/artist/7b55606b-5e11-4d2a-a444-25ed5c93bea7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Background Jazz for the Sake of Background Jazz
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 0xca048c88737a0a40b09298f92360efdd8d3cf8549973b70dc3bcacd494001240. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBSMU6723652.
All Jazz and No Jazz Makes Jazz a Dull Boy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa077775d17f68077b3b4ceaa24ff57505ed830e59e828ee6ff786571eae64a52. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBSMU6723653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237593b0484808e2d19201b2e6a142f9ce4a7e6b4845faa9b154089fbd56ff7c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBSMU6723654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945e10db758080abe45ee299b6a5674a12fa444bfeb5aaca67f4b5504c85a35f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:41:12Z), 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/GBSMU6723655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b693fdb0fa935a29676ee4a72720bb2f26aa3c5042c4f146f60643159b80a6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU6723656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a1634ddfead5d9a32e887b13b1315b3cb5498a28680a24e813b813164acbac. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GBSMU6723657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bfa198e047012aac152b99cf53713c02d33e622cc2477df741859f23406bb0. 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/GBSMU6723658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9836f542b73ccb12d3f2c65c86232f1b96e09c2199b12db37803b53fbc6868c8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBSMU6723659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1067b15386968d79d57599ad0133cdf6905f4585e876cf85eb290ac388089738. 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/GBSMU6723660.
I Was Walking Aimlessly Around the Neighbourhood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3497c1228ea2d52dd3b1cd58b2f8e41fdd68244500c4aa8d9b9a5b86145031b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBSMU6723661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd71be852fa166cd5b594c76111d9a071c28f58e4ebad71e61c841e11f837d10. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBSMU6723662.
Bebop Background Music is What's Good for You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425f0653e1a8d20dd79ac97fb5b44a21cd2823faa782b9c6f52f1281d19e6f38. 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/GBSMU6723663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff36414f5b72070ee84e1c0aca0014a7555b3162051abfe6e32fa090197ee829. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBSMU6723664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bc7d1bc99db50826275f1ebddab6d86ec018bdc902aafcc7e38f26818b434e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBSMU6723665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb62f8ce3ab87bfb892bd92a0e0ebb10fdc4a0a77da4f26f46037533ac462ae9. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBSMU6723666.
Cool Instrumental Jazz at the Relaxation Lounge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd2cd81c10a3e6864f81dd484b9a2f39a17aa1c19b6d81c76d3a64b71684b77. 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/GBSMU6819876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1847767fe84a384de60cd90070f86fce6a0f4e2e4369709927d07e910d4a61e4. 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/GBSMU6819879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50f0755e52bd8b8e4317a07e58f4bbafc45c31f639d518823d391dd73e02dbc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU6819880.
Instrumental Background Jazz if You Get My Drift
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26384f54b4ddc875212a8b2bf7cdb41570ab6a2542964603fa0604a8cfe76e1f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:18:30Z), 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/GBSMU6819885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0813ab05e6c61fd9a932042e8329f5c53a04bd6857e01417f8750df2460db7. 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/GBSMU6819889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90645e67a284e9e3911550224e4f35d84bccee9c5ea83eba1a8b224e8c1b7f24. 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/GBSMU6819890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddd8eb6b02ec0de7248a61ae30df2161368658e5a8627c60f16bcf0c822f058. 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/GBSMU6819891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1055f61ffc7ac03bd93dc6923b9e2105a10703b527d106745bb749255a158676. 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/GBSMU6819893.
Bossa Nova Jazz for the Sake of Bossa Nova Jazz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc8d8bf070665c8f70f44049eb6138c5a468dda2e0de4f7301acda4664fc908. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GBSMU7140392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489acd013654c75a9e71036658e2264a5d2e7fad3cff834c0403d4a13588e828. 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/GBSMU7140406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3638b0cad1bdce99dd9426a21d6bfea0ecce8294d4adf13f173007a5091c241. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBSMU7140408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ac9d058f33e36623b4d90772bc961af0ccc0a34d297dca2662654b58561886. 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/GBSMU7140410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909ffc945f7c08ea5f4236ce93da98469c886a65b3946d0146579897ff91fded. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU7140416.
Snowy Nights Jazz - Holiday Tunes for Relaxation