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 0x431b2ec063feb2676a0f2f60a8160520c0964ea1cfec201edac877d3e4abffc0. 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/806bd508-85de-4cf4-9368-247c96f08674.json and https://artists.proofprofile.net/proofs/artist/806bd508-85de-4cf4-9368-247c96f08674.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 0x17643811b2b7b69b7dad99f2062d32df496df84c092e305351245992de6f8d02. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USUYG1198886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6449853413189af4b2a87c66a53f150f91d7b6d9c2ce7c8dcbcd2b34148007. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USUYG1198893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3ca265463d1573b64f9368d9d74221417a6115ba110f6e55d0ca9fe54f5a95. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USUYG1240607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1902aa2827c30b8bf4d3f44e8b9f9f63106681112e3cc8690ad1750309999aff. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USUYG1240608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d4ba8a723c2209ddbde37285f56b5a53536bd22489358abd8350d29a5974ad. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USUYG1240609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa983f3876eb78a74233c6d308b48ea45c0e2b129f1a072aa706cce94aa17f203. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USUYG1240610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ef4986db4d391cc86543fa5780798bb8f4853c4eda72be884e8fd8aee6002e. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USUYG1240611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a65b634ed88c5149eadc7b0faa9c1d94c70170185d364b02696c3655fc4cfe. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:19Z), 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/USUYG1240612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344cbede772fbb634bcd51061591d88d70a3f49d025dff4683aa2d1dac255e9f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:39:42Z), 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/USUYG1268326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16875e2c40113feb39ad0a0d794f33d599976a16844a26b7a75d1864e46b8f2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USUYG1268322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99369990d2c9e46eed6894b0ecc524cf772972262798486f55bcbe0cda84035. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/USUYG1268319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcbc10002e5bb726894e681d6ed37d14a3e3b6430162a04a3f0fcf8e3a3427a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:30:44Z), 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/USUYG1268315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73600855f2afca6e12e3a21818e818b31fe3a457b24a1f85427064d372d5dd9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USUYG1284206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c560246ef5a66de6427e27b7293ebb9faf051c3e5f9be218f422d45743dd3d7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USUYG1284207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd488ef537a0fee8ed78a0efa15c816cef20c3c0bb724984b9d210b22bbc57f0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:42Z), 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/USUYG1306554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b524d66c0368c2ddcf3b1f5580f2ae5a319fd48eee5870ab60253a9bfb1e044. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:29Z), 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/USUYG1306552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1850f3f00f120ee9baa5cde34b5c1fe612b058ee9d96fcd7f4241e183ae6159. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USUYG1306553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba8d656a35a352accf83b894e32fed0efd8bd656bc695fc1f6478328de2fb08. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USUYG1429325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0f4e8462e8842c59eecca319bce63214355ed93258c88d99d0b944c8b6cabc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USUYG1470499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b490511d1207a86eb49d596aafa5793c107dac9a7c19e696496d7836e171c97. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USUYG1508359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9132f3bbaad209bb5a77d610129397ab739838e5f12ef1ff5361a587f67ca1. 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/USUYG1567406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb657fe86e7067784f3f1dee257e6758da746b460e91555b0eccc5d5d49b6a97b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:53:50Z), 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/USUYG1567405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01420cf1f70cfbd028c8310bb55c161650f8c9f7a2d5256cedb80e25d7498294. 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/USUYG1747172.