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 0x98a84af4d45f980c89b40399a0422e69e20d96e9968bafe507a79a8928d97cc3. 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/4b26c966-20b3-44b2-962f-3551341d6ce9.json and https://artists.proofprofile.net/proofs/artist/4b26c966-20b3-44b2-962f-3551341d6ce9.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 0xd2fd96d588eceed62506dec34fcc478921ba3baad62bfd5c733fed45e8b02c41. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHNC2113298.
Virgin By Choice - Spongebob Squarewave Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3951035f9d996f3a6397d7a85c1efade035fc6da21e960e3e4a35c7a27d049. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), 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/QZHNC2113299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3af65c4510a02e4c56fd5422eec8e986fa70975af8c5c6f4618f0c2a0a3142. Chain 2 (Bitcoin): anchored in block 956970 (2026-07-07T00:37:51Z), 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/QZHNC2113271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8728d5faa033cb12aa765e45b1f33829b1c698a8f1f75978d4ead88f06a40cae. 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/QZNWT2073008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b97b70037464b6db7d0674a581657f88e89fdca6f357c825c767330e741107. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZNWT2073011.
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 0x2a7c2995a48d5b619be80fa614421e437de6af5666613d253570e8d0ed70d65a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZNWT2073012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a365b876f59efdf708e033ef34e9200a8374ac756d9db1d777b20db5ad5d49. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZNWT2073014.
Ap1 (Nineties Rave Retrospective Volume 7)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986bb244e1644f55f35a97d107bd411a411ca35f0cc2574e2cc78ba8d6870244. 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/QZHNB1911139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576e4120d64c8ad22681a96ce0dc48c87d17f1b15a25bb009cf859ac535a6fce. 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/QZHNB1911140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a376741d9bfbee5a7bd7c043ca43c98bd2f6147bcc6eba1ba84f90d3173492b. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QZHNB1911142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2c3a920b8f88d7aa80456098775ebeb252287bb2f0824acaf4d972c9ff51dd. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZHNB1911143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70981b02fa521b5b714d2bfc88b5df9c1d6a28d6bf26f9bda0a2186a5b97958e. 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/QZHNB1911144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfb8fdffd8630a331a9789ea3f8e23893f130949e13df766d4bcb15b47e2290. 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/QZHNB1911146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3fdb79a84b9876725768488fa6d55232697440abd3e75a2573edd1cdc79017. 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/QZHNB1911147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebc67caa35f2e6e12bc10eff9186328cbccf5cb1a98358cf150cffebbb5ae00. 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/QZHNB1911148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b92c71fb856aca95b6ef722edd9989c71d752940628677ebc2f868f173a94a8. 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/QZHNB1911149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda141774b1096b6cbe01165c8379e71dc3b0053e4bf8fdbdae0078fb080ffb20. 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/QZHNB1911150.
Real Fuckin' High! - Breakforce One Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a4679cdbaad6251f687e637a5223e2f74f6e96a13f6e00b85389431b9e511a. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZHNB1911151.