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 0xe8f69931cffb26bb8ec19c5491d8e1a58460bc745a32e0e22c373fea39c96e2f. 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/95a83799-9e10-404f-8bb7-98df87077f3c.json and https://artists.proofprofile.net/proofs/artist/95a83799-9e10-404f-8bb7-98df87077f3c.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 0xbc8982316350e5864c360771ee614b4caca92daa60c3eb75d9c1f9407584134f. 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/US9CY1801094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e41255daf096231e19b2eb6f1388e5414ea27b3528db9e0a824c3154c2faa0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US3DF2076728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbac1e0823fa783c03291d88e0a6cd59a7f9828a6460112de48172f7b150a0e2. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/US3DF2076739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1accb8ef0a651a27a385e1afcad4dd6c4acf035976b848dc5f20e2438c4aa307. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US3DF2076711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedefb870a9f4827b51e256375fce2f47789363a739c2a518457a6b19a5dbb2a6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:55:17Z), 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/US3DF2076715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb8181b1bb339b3e669433fad2b077e67ab50512f0c8a2751eaa22d1325686c. 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/US3DF2076717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a646d5f504fdc4d1164350a2ee1cfa60bbaccf245e14df9d3b19d64d07abf9. 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/US3DF2076720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca85c46f2e2531e2124474cfc399ed381c29116ba60ceda035afe735ecfb95a. 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/US3DF2076722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cd74221f2c13e3ffbac0405c289e373aa2643deecd2bebaaecd8eb2e247328. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:47:21Z), 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/US3DF2082908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecbd8fb82f4efe797a6f54deb8c375c663c29398b02c259b9db24a79b76e586. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/US3DF2082880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4aead17463167a34e9f085ee32fa75beb4228bde2fafdec4b7d4a31d71db26. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USANG2203870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503625862167dfc608c267c7a199eee37382420d9a67007f0aedf17909387131. 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/USANG2276280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40ba15a16c58a6078a1e744b5a66dbff490080ec1553b2aa9e1db99983e3942. 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/QM3DF2254509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfcacdd45475b0028a2e315300dbff9bcc68127fd49f2292c6b4456a08b9e3f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMANG2222259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb15cd155475f01cee69263eb4dec5a0fc758a426d1ab690372f9fa7823e7ff8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GXBAV2487307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d7a83799287a68bead2057ba36beba30712194dcb4d0de93f7bbc0d06d8f54. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US3DF2431389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0821629cc427272aa49b116bf3e668ea8f51ba6e9ec64ec400b016388ec071. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USANG2419556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa239af910e9d65bc64447b3c429522e5985eaa4f4408c68b8c22730c7906c896. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US3DF2495949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54ac37deac0f672041400ff44bbef72574ea0947aaa9306ed8ac6eaeef86640. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BK4DA2457615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a9dc802df3098c0b54623beaac837cafb85fa2094d34f4962db2d7aca3b1b7. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BK4DA2464138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb955df8f816648ae1efe7c985ee860eabc7121e74ecea4d37c1a58b2ef801e9f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BK4DA2464625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe498a9001e2b654781feced52c3e32399cfe5fbd97a10d0c03d8aee1701aa82f. 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/BK4DA2513256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1b020386548ee6ffca7ffbd108c2e8ad65b849a80190b4a5ab80cf253b57f1. 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/BK4DA2516066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd23be4775942275d09b426d13f7ff3f5037747b08f5b8af749b4616c6fdcc04. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:49:28Z), 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/BK4DA2517697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2208cb9ae903f61315c0f2b202869e7dcd74b3ffbf69fd03c5e5742ab688fef. 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/BK4DA2522087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06bef44f5c2ba59dfd2d7fc320e354f6cf210fb99490b8d194fb7014b193f45. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:36Z), 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/BK4DA2526939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb3cb069c5cf926e57c2d2355f6fbb529daa76de858d3e1f3d88e3de666ccf8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDQH2160803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f38181b281952c258a437655c912c69f14229e995099346253e4f295363f00. 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/QZDQH2203038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2898fdab35c8e9c90ca822893453b5f30ebefd8955fbd391205e668ee545c88b. 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/QZDQH2203048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d3627a107aaad45ec73f518f1724d30469219201f03dfc595e92df1bb45ff1. 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/QZDQH2203051.