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 0x6fc74375a04700adc3e3189cb5c08731fc6136feef57d36d3e7a90952c6817a6. 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/a3ce12be-58f2-4723-9a19-8aa429e36233.json and https://artists.proofprofile.net/proofs/artist/a3ce12be-58f2-4723-9a19-8aa429e36233.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 0x806bc295fa56ff8041516e990fa4a392660fd67332d13168a6b715a4f248b54d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:33Z), 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/ATR981192593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9063de14f69ec0c904ed71978012618f861243f350b8b3517635374f58f607ed. 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/ATR981192594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f24c442f36f1542bf5f901c29f9066ec3ad401b865143d5159082185074b98. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:02:34Z), 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/ATR981192596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1ba34ee571f26311d58dd2db2c00a455373b27ec0b5cfd648272cb66d74a92. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:36Z), 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/ATR981192597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00eab14835873feb867516b7dfac956c4ac8100d3e4e375faf9d7e0d47114fbd. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ATR981192598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170cd46c7bc2170b6eb76792b178cb61a4e4a3fda37370cf3bbd6ba0a8cabda2. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:43:19Z), 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/ATR981192599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fde87ac1c4e1a7b6f07c816fc02dd14a6b377731c7d8050684670050cdc0cd. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ATR981192600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4305f62ba533d76bfe4080f629b9d5355f38d5cac9ca84963fc266fe4bbbbd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:23:20Z), 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/ATR981192942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040316181463c7d6ff6c2c4a9ea8c41816d271e313cb294389be1a424ed08760. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:17:50Z), 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/ATR981192943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0ced450d69a2a2a61dfa8dbc97446ec4faaf55e7eee9041244505343bc2291. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ATR981192944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f2e7c858943047b302d08f1b929e441b75f25664171b4acd69d51fb1ff1127. 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/ATR981192945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df6f81b04581b11150dce41c859007f46282006537e49d029935f0ec3e8dae9. 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/ATR981192946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f963468a059876a912e6ba0def803768b686b302ced5518c890f139b79bd08. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/ATR981192947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7e42cfd5e05b6d74b5078696b1eff53d6554d7c812808f1c27ce8a07432199. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:38:50Z), 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/ATR981192948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43120c07b4017a61968fb02c4af23f8832d0b8e409e05dcc720c846293f9234. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ATR981192949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6941ee699890529052f651bc41fa7f489a4b91355088476472da1d3e8a41bee. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ATR981192951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f853d68e92c29597e1ba48486b53fcf2d320e657828dedd50c2f1e4682efc83. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ATR981192952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828c66b5162b8790b1cf01d5beb7d548d72097b0cbbc9c77d76b233302943393. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ATR981192953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e1f812aae93cc9d05685d60d24ac65444a69a8ae5b2923078ddd7b0e155e56. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/ATR981192954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eefebd101babf6af567f6105532f25d01389bd19dac74da81762d9c2d6fe15d. 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/ATR981192956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb2777c1d38bd1b6a91092dd97a96053f018d5f329bd26e8efd2f81760606a9. 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/ATR981192958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700d4cd002f2385e871a1f41e01c9bdb444b8cc3e7f78ad4fcb32fc3f210e691. 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/ATR981192959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47a9748533f7eefa004607c10d137d51f6ab41206c5e2dd30a326d6cfed2248. 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/ATR981192961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd73e955a0854658f6ad93e3236ba9c23ef196b7b8a839a6e9780fdc4de40f92. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:06:58Z), 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/GBLPF6787851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2db359a4952bbb9b011fa0494b6ce16e20d81c5830a2e5a7face0ba792c2a2. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GBLPF6787853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc2f12663e8faea0f1a48a8f80e3b4bdca22b5f4a5b413ce93f0e70e5a30bae. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:45:15Z), 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/GBLPF6787854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd650ad00ebd4806e24bcda6544815a6435c49e1f0a2a712386b9cde04312a8ac. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLPF6787859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151418a47858012783011398413a7c08f899cdc3bbddd08bbb2ce7ee74d713fc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEAR42468191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23313b22f8e1250ffd8ccc5da242c0277a163051dce6aea946b1dae52ca448ca. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/DEAR42468237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fba35f436f3222a6464fc916c5833c8b166c2458a5eff6be408dbd11555c82. 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/DEAR42468131.