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 0x189cabc5659b9466fb1f1b2bd86c8d91b055513c2f65197825fb9997a7011b49. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca6435d4-3cff-43ca-9e39-09e2afc1e431.json and https://artists.proofprofile.net/proofs/artist/ca6435d4-3cff-43ca-9e39-09e2afc1e431.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 0x084ad76fb33fc1567b46725256c184479eff70e6ade1e3205d7fd838df92b1a2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZTB42242916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bd0387bf5ebaf3ca55e0a3ee2f46c46ee11cc65074d683d9650b3be4b4d39f. 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/QZTB42242918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101b231741f8d979199b001b03e8ecebcee99159675a992412964bd6d6979438. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTB42242921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc2f3610da58293212467bd5d369beaa43bfe23317e904406eb02617d1f2a7c. 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/QZTB42242922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2058eb0b7ed0cd632d671ca9b672452a8b6e3bdef9d37edbb183337a8ac8aae. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:54Z), 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/QZTB42242923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bb84aa5f4c638fa361c271cd68b26050b593fbf9e6c3669970cac1be451b7c. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GX3HH2251562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ead448f784bcb2bbe73f0c8bc3396216234978458d56ae4bd772f7cc1ab4b18. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTB42242862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed347d3c747be6b33b44db1b8ce48ca3b6f41bbe48bd6531cb4491000a8a59b2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZTB42242864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf50df8a9714a88202af9da113e8c84da2bb76c23d6099232e82d0fc986c94d3. 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/QZTB42242865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2d1dd065bd509595779c3e80999bec220dda9d91e9b73af4440d826bc8c401. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZTB42242869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bc7f024f1178a896cb016b38f606d18069677e75a045c28d67d779d5d150ce. 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/QZTB42242870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03eb68f8ef46649589bb466a9bc17da865ee4d57f348a342dbf9fb8055485266. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:16Z), 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/QZHNB2477241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d7fab663fb3c5b6b2ddee4d4dca309aa64d72450e71a81aba3c7f6b18f3f5e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:42Z), 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/QT6E82526220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3216500c8eab916b025c770ac18c4b39386bf7d5b8babcbb422f1fc60f4482ee. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT6E82526221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30fc41642c035de4a3e29aef86aa92699f882afc0f858f3cde7a29790db832e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT6E82526222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259ab805e2f0c656f4f9b3e498a8a17306e4c84b7f8c6f21b876c4d024ee5aff. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT6E82526223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009dcd5acffe255cd5f863c36c5dd0e8ddf595925d1856cb94a371ac693d1d26. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QT6E82526224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18245f8abdc6fc3cbe790975acfde27625f317dcb0c28fd041309e6c02568cee. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT6E82526225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75402d075a297fc7d59ce88ad2fc491de8556867ca1f1b742b5ca78a20edd22e. 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/QT6E82526226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51cc6597b8b782f35dc2e5226a98c5b5c5d4ca266a4fba5be9eb264c892b191. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QT6E82526227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4579eaa09fa5083f0ba33e4caf4ab3febea75fb9e91a83c80df02bd7857ed1. 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/QT6E82526228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e05e8926e895cfd2aa4e5beb3f4644fd684edbe4c2adc6d84e5983994e4addf. 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/QT6E82526229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4372b90cdff6c429d17582102c86ac37a6dd81c2c91e911605db6c7be17428b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QT6E82526230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62069b81fba39a991226fe25da27c4b110fefb12cadc5de54d8c9594f336c7fa. 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/QT6E82526231.