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 0xb6ffc99984ac3462d520e2479229d97257dd72f01744a2ac65cea3ee23196e50. 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/931da9b9-de54-4ee5-b7b5-e8e3ea11c9b2.json and https://artists.proofprofile.net/proofs/artist/931da9b9-de54-4ee5-b7b5-e8e3ea11c9b2.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 0x61cafec889dde35ee0ba2fe1a5fc6e45bb7e55dc9d32975a9c87558c60893e76. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:51:45Z), 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/FRP9W1601060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738f3bdfa1c57411bad90e0bc172e291b5706b3f6e8fc31e3313647e543f4ebd. 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/FRP9W1800150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd17274e00c32122bf44e598ea221d22c15b8ec84b04bd873802fdfc667d6ec7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE5751849530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bef1cfb694debe7893456e9871bad8736964997d921e9f0b731c8f7aee506fc. 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/FRUM72001030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd58891de31a76ea46b379f9f4a299dbb6fc0219000fae1159e3f8f12d6e5f2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6F2030553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5d326274f19c6b8776914dd01aa5a283ae99af822d97bca5b7ea4580925b67. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZMER2007560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace2330d77d17e6b6280421fe968d7c594ef9b9ee215f736ab3e909b408fee0f. 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/QZNWW2072804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef8cb2cf9d27c7b253fbd6f6fbbaa8653068f4b4e3a2d0a3bf81856e389ae6d. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:49:36Z), 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/FR9W12129889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa596a169041d36d217586a858f6505789cacb2c4f0bff53840ca4421d4a38858. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:11:08Z), 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/FR9W12129892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0c7324a1ebc73d146556a58175b24d9eab48a0fac2789f182dbb7003831a36. 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/FR9W12124847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bbefb74777b8d626014bb54c82617dc9c82d33b8ed757fc9cd3c2ac94ef69a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FR9W12129891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955bd17b960595e2c208e06d3e7a02998decfbdfb44dda8ce2b14cfc7cd1b6e4. 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/FR9W12118053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1b8d5b61684886d49449e7dfb725b4a726bee9f98b237f2678a8d6643befd9. 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/QZNMX2120727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374b563ef48ad8d8dd61dbfcb1950495f306bdd16d48f4656677d26b6ebb44d9. 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/FR9W12129893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee02ece2b9598a12216143488c5b30afdb56f955d93e595db975e27012b5b1e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR9W12235863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ed583807563f800a8e920f78652089691792b5cefb0fc084dcb971fa7163aa. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR9W12243500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3a108d12597baf6bdceef03c50b35fc89030a2fd0be7dd4d11c1a8524fd1d5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR9W12245771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f442a28737d7fd27b78f1d6b0ccf169b4fdd678827ee7d173640825a51cc16a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA52402795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008d72adf9faf0cfaf7b674cc868ac12bf789d5281d7f2229564f40ce9754b52. 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/QZHNB2424895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aadfebfa0faa7f9da1db772413f3ec1fb6a9885aa879df6ce0a403f3b94bbd. 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/QZHNB2424896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6707a032f181ecd24b32a1fcbe2a84c46ac5e06244a0c9a3fef76283c3c000c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAT2402552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c029faf6bf8cf2bd85adb6defee64d78a38b7f2b525665842fd814e63c609b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:28:21Z), 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/QZTAT2401489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6086f0998fb8b3b31411ffe1b0f501538cdc1ba512f065e46bb405a153d4159e. 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/QZTAY2420482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442f4f5563b276b169aefdbaec5a1eaf53f3ab4115c3be03b7ad756ad4674250. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QM6MZ2509618.