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 0xdbe08dd895bc28127b9d6f2b9828cc81df1a10fb8cf34e9734f37d390f25f498. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/766358f5-7642-4843-82f0-74a2aee81a31.json and https://artists.proofprofile.net/proofs/artist/766358f5-7642-4843-82f0-74a2aee81a31.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 0xd3e3f13df47c850753423cad83e6829760d44b3c969d4cb3754f93348ff2e6a6. 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/CA5KR1956231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b0df82b6ca8a4fe84f4ab2db4513fb6549f14eb698823032494250e0f5c559. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR1956232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f32df5e997561dd363476d61904cf02df4d0eb47ede47c4936abef0e7d8b820. 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/CA5KR1956233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754ddef3c87ca557329287d69fd0935ce610701136c42d98d316f53d857bec3b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR1956234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd470a0df0de5435554f41954f35beda977527d30e9ac23690108eea9b29c939c. 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/CA5KR1956237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2d4a29d0e3646b04f11068307ed547db024e15788f082719b968dbf4e10f2b. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/CA5KR1956235.
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
Kenstrumentals, Vol. 2 (Summer Rarities)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de0084fe656c8f9bf2d1b8bbcef2f69f982e45dcf41ac81e4526d42ca110660. 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/US25X1089785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1af6e5fe587e04ef0b189fc7f4bc762d76fe1e13f13c7edce0f9cddc62d913. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US25X1089788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1214a5fefb318221cd5c039b81e03afb1791263c4fb8832e31816cca1172dc8. 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/US25X1089790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a68a59d60108942e15f6a7f0b67c46699f328e0197498234e74995588043cb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US25X1089796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd31f518e4f0656e32d2553d79daaae68d79332a90efb824552edae3948b901. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US25X1089798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb1f9a7f589395d647dc8436cb5c9d9c3c75fc1b98a931ed6e6d621b92b8c16. 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/US25X1089799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef228f96bf6b65fcd6667bb0b2182c816bf79069271290f205a376e2550f0d5. 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/US25X1089792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e736552d8c899c90dfc7a40de65b8c9a9613504b1b81071babaa3a59e3cba7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US25X1800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4130e0f5ed33980566346b3c07f23416f2646c0e1e53fa35f08adddd5b6a8f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US25X1800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa581dcfe9f4112c78c380532799be106266e436e434101a013bfb99455935967. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/US25X1800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c4b2e1b540d5735e5d93c5aab5471a5474bba5041c172d993468a7a3167c5b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US25X1088853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed27579af49d105305b9387391fe51b9b18601553753dff0194a331cfee84da5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US25X1088854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e3efe3ae6cab8c52a05316ae67520d46ec260f062da397d1e9e47a01c83add. 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/US25X1088855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda10cda312b5963348fd9e43cd4f97e216822ef38f57f3653c459d8b2303ce4b. 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/US25X1088856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42ab83011c88374f0932498c99aa53983a9f78ff13c2b3f1e57e28c2e9d77ec. 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/US25X1088861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe996889bc3b3d30bc5a85ffb6d450fc2af58807fd56451690300a3853a5ca534. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US25X1088863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aac48f38cdb1f691fb8c23cfd8433ed7dab7ec245ec62ad9d44ffce131360be. 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/US25X1800541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c31aa1ee086a46445b1f80ca6a15fae4d61d58d770ff9fcd3dcdbf556e6e1a0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US25X1800544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782d7cf0453bb9896c7476c6ee615f7c63a7f612fe11dc823f4d2e1a634bfffb. 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/US25X1800547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a921d5bc8bd8f5ec22bf9a0082478c7b1d8f98df3318a5608b587ce0600345. 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/US25X1800553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f03d42fce2393ec38c8a827546a67a26d21ecb019e15cf84580d6d79f24a57. 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/US25X2003297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf33ed83afbfe6a73c346a37e967fc18c93659c6893fba4ee3316c2147b6825. 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/US25X1801983.