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 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 0x605ad45e24243a20a37b4a66a178287797535c442b0862ae03dd46e1a8a4b63c. 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/2b5bbda9-2923-4e4b-af2e-290d70b2db59.json and https://artists.proofprofile.net/proofs/artist/2b5bbda9-2923-4e4b-af2e-290d70b2db59.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 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 0x1bf11dc4c4cb36ffbd6473483e9d9ed27a33b9e3a585cd65218ffedfa2ba4c96. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/USCGJ1118634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d78f1119b4e5d48218cfe1617d479ce933134735417619b7dac86c9b04c366. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USCGJ1118636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00f19a097bcee7916b8e8828b846ecaefbf562894798fb53aff10e5c4eed8c6. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USCGJ1118637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676228b0acf5f9e91e3f21b4344070e2ab7b441ebc840bbd537ce31c88de0178. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USCGJ1118638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeb05794e54399add8a3b822a24e545a3b2cf603fe2e326e44f6fc10ef069fb. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/USCGJ1640010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be04b99e8a8c1520bf9ad0c4beeeb360f16b6f28f9556d3a52bae96a14581d4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USCGJ1640011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5665359ceae9d8e78074070066446a652c65a3fbee5024b77685d59e6b8b4215. 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/USCGJ1640012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa726e258fb1b0941541f3b159c760fb4ebf72198f78308c617b9c717a94ed1cf. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USCGJ1640013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb4abff3e6dc4cbc4395436f1f149a37a410d0d05e4144c1b7ddbedc27887f7. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USCGJ1640014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c775d7f1ac197f3f7f31e5350144b8595205bcb1fc525446dc45e6e506bd10. 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/USCGJ1640016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a76da9404c891f414c971241840267910f259552641c054cff76e690584c4a. 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/USCGJ1640018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc7c386ce5a0776a5bc81d5844a317aea464efc06ce3c05eec8bbc89b7bc121. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USDY41745659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eb95eff34f377628afd52369fa2b869cb1eaf5ee976e6dfd6bf0c8ef4e3786. 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/USCGH2011480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af262e812a747fcc67ea2be4aa9c8b99bd8f1246ef3f125f9b76c525a753da0. 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/USCGH2011481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45209a90518af7c301d864dcbdd366ec5041736fc0e2bc3c7767271ebdda7ff. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBPS81500804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fca5ed8c4a8d52f3913f09ef9c2a5bf1fbc3f7394c642061ce025f5a3fe9a47. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBPS81500802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efd5e15fca0669a9429fdb5e0a8e521de99cc4250b30f3ec511e4b5448ca451. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBPS81500796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b4847e52e2781c6ec692e4110ff1dde30d27d100732addc312fb2321a3d320. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/US5UL1242809.
Smooth Jazz Music – Perfect Evening and Good Relax
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1861cfe60978335a2a858c8b8759c6b423af874d5d4ae8f1e6f8846dc863cea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US5UL1644407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335f15162c9db09376e37813723c958899beb3ecd8aa5654a3109cd412b479bc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US5UL1238378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99901bf065c0ca36870f1e551126b43a0110408eacc6cb944ec5e53b14de635. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBPS81500805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8cff78dc292a09ac0c339384b97e792a4e059cdee6e30ad8ec4da8dbc875f1. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBPS81500803.