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 0xd40c321d4a491aacf18767066003b27a007931a04871bdfd067a9df23c3b2335. 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/e292c5bc-a455-4692-ad80-135a012d77a6.json and https://artists.proofprofile.net/proofs/artist/e292c5bc-a455-4692-ad80-135a012d77a6.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 0x33719e63f3ac507b10a073abae54168999981c13146a21d1b9af05aca934b3df. 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/FR2X41745136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e5c3943e7df3a23a941045eb82ad31e30953fc11e7dcf423e6bc33adfdf75a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR2X41745138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180ad5b0719775a7b9e92c2cab034329d597de4696c9fa751e7eaea57a6dcc29. 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/FR2X41745139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296d4c125d5438662874785f96b06b83b579cacc8105bdddbffaaab6cc46d4d9. 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/FR2X41745142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbf56d025acf57ff550b4ea707ac620dfc9dc6f5e8908c319e0aec485d0af94. 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/FR2X41861222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a122b7b2977e79704bca41b95981c03ea9933e4e88f1586da86e08d97028dd3. 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/FR2X41861223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a61b29e78331e33f10b5b1beacd361e98b21936e242a0ccb27f22097bb87817. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:10:50Z), 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/FR2X41764266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17888fde1161a529095f0194fc6dc5d64807584903487d7c9d21b622b4b682e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FR2X41764267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea943e52c85c9869b777815f49ec1b487c519307e41bd7211b98b1efef34871. 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/FR2X41764269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffd2232fb5439d34e6bc88f0572fa271da9503b7c94807fe2299f48a618efbb. 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/FR2X41764270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643a876968064914697d76645e356f96eafe1f351e519848dca7441ebc0e7bb7. 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/FRX201857490.
พื้นที่ส่วนกลาง
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6393e383207c4bc25b1d9bb1a1be5ff2ba2c09b5941d34f9fb9dc8d4ed7cf0ed. 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/FR2X41947425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cc9a6e4544b109fc58d65f2f591759c1749c4ec1304ca135d6df97e135903d. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:41:51Z), 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/FR10S2218772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40d4620e9517111e8aa14c9768bf3ac0f7dcf366144fa2a96f9a2302767e6e2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR96X2391938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f46e983d96320acaf8ad239738776c79e4240c957404275b3d169e9ad0b61ac. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:21:01Z), 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/FRX762442618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2633c7262b9b18707d9ce36b13b66ec9312b22f75761c6e46e7df4a4c97955c5. 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/DGA0H2425412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643a876968064914697d76645e356f96eafe1f351e519848dca7441ebc0e7bb7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRX201857490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cc9a6e4544b109fc58d65f2f591759c1749c4ec1304ca135d6df97e135903d. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/FR10S2218772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6393e383207c4bc25b1d9bb1a1be5ff2ba2c09b5941d34f9fb9dc8d4ed7cf0ed. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FR2X41947425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40d4620e9517111e8aa14c9768bf3ac0f7dcf366144fa2a96f9a2302767e6e2. 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/FR96X2391938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f46e983d96320acaf8ad239738776c79e4240c957404275b3d169e9ad0b61ac. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FRX762442618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8aef1e46f595ef02351fa20c7e6e3a82e186e2131de4a16f7ee8e7a861b84fa. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX202516323.