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 0x6b223443b2d69e92e7d95ea21128c3ed88fed403a3b88a5be71c66cc6b013ee8. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34b2504a-d0cf-405b-9723-d425926519c6.json and https://artists.proofprofile.net/proofs/artist/34b2504a-d0cf-405b-9723-d425926519c6.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 0x856927b5cd273dafcb0c0fc0329fe02428f04de3acc24754ebacad0f9c98ca7f. 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/CAHQJ2488519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad4e0d8bfdd8c43b4e7ce40b50e53b67ad58725678adf007f1ab98e945265c7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/CAHQJ2484582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aeca452705360d3226b3487d35ef78e2ae9c8b128513c8c1aef7c590fa47bf4. 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/CAHQJ2484584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6383eeffac34ac840af4973380c8c93fc880f833b081321b302ae276e603c562. 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/CAHQJ2484579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31769832d6c3b2e0f555a7b4d8071ca020b52b3583b70c2726c5fe289f3029e. 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/CAHQJ2484586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa902295419ae7dbf3ba3330b413ea4fd7e149c672ca1e96ffd3940f4c92475f4. 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/CAENV2429921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f3d5c1401bcbec9faa5db2bb3454240754544505ff1a583beaa1c4c32cb375. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/CALVP2401367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2568758d6bc91b8afddac06f2766965d1a3eb282ad6771d314be6e9dddf2a85b. 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/CBF8B2401900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2328ef82f9adb296f88ac4938abe923741b3ed793902950b383d4301f1f0f819. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CBF8B2401883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6796f9561452a8aee1ac89668472150d12901c37476eda5a5b8dc860c2b5276. 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/CBF8B2401887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1b22e16b970d859524cd69b1c1f045d977e47abb446563f22463bff4eb7938. 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/CBF8B2401895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48808373a0214ae53b4f2ff20dfcceb4a85d862d4c8a68cc6190d39dc2dcdfd2. 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/CH6542540608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d127e03ca1c41a549ab4ac7b78d2a11907609114e0255efb6e96051c2929298. 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/CALVP2562298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77755206354c150bbd43dfcf3f96bf1c7f3527ef3b4ed8e8573255c8cc3b0bc. 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/CBEYJ2546412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a4f7a1abbb3d2d188ceb812376e7f05dd516dff458893dc9ae8e3d25167149. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:20:34Z), 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/CH6542575794.
CITY FUNK -Twilight- mixed by DJ TARO of Rhythm & Groove (DJ MIX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172faccbbb5a325b94fdb83b97ec0971a15e1b74e7677f5b8dc6506458999b7a. 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/TCJPA2445756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55c4fb0508715494c7469a3c10cdc8507bf4237eb3132619b62ed0e29f2ecb4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLI361849760.
Candy Night - Flamingo Cartel & DJ TARO Remixx - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa701fb5a3f7aef5c6e1d57bc44681225706014336ee410ffd0596b786fefa56a. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/TCJPA2445836.
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