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 0xb756e984083ed376f5c1bd76f6b0cffd7c9396476109d5fbf5874739ab9318ae. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfd2dc2d-1ad0-4b52-b160-1fc5782938e9.json and https://artists.proofprofile.net/proofs/artist/bfd2dc2d-1ad0-4b52-b160-1fc5782938e9.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 0x2dc872b420f6fafe038de11f04358fc5079455b7a0a0e36dcf62430ab62c4a19. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TR2520600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd944e4a2505b5d0498e01fd4340cd71cf48f3af8a2bf7b0336616a48531b9d7. 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/TR2520600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2147e38ee5e6a69e15850c3fa78e6911b3c3ade8036143a7a966704a540417. 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/TR2520600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5181063ee30c4bdf309be109d9b4491e4147bfb6de83553c8a61a3d3139439a. 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/TR2520600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1e3f81966c9dde41160a5263cc3eb1421dc3e12597bbe67a988e0e31cc445f. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:29:02Z), 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/TR2520600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf333eba206ed520c5e017d77cd4e66bed00e4e28590e162e56176e5498cfd8b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/TR2520600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6478dcc612ca47b642330b73305e8e65b8de783c9bbbee358296b15d4a6007e8. 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/TR2520600034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65af49a818f8620b05df4e437143c8e462f44fd631ebc2ea5c1ac699fe927ad. 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/TR2520600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4be8f35bc5f60c4110aaaa089d4d61d1b4e0d7b5f69a7267ada2f3db8a9776. 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/TR2520600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc5056762038e62faee3764601cf498ef4b332f0984a158314590f381ffc118. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/TR2520600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee12102ba436c5e61bcfa0356ec0b05b5c09e9625a161c9c841593b2a8492b46. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TR2520600051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d64c3d848679b1d7e83e7c04369a5ed94ebb46625309ed4e626bcf602dd0514. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TR2520600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa4eec3a743f27073c1e64de0bc4dc78efa0e45466f216682a2665dfe3fa158. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:52:50Z), 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/TR2520600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71995eeee77ef299f3de5fd00bcfef35dd5d666bfe209e31c86bf2c61d69665c. 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/TR2520600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cf7b25e879b240916ee4ce7dd3753aef9214c80dbdeceac67e445abe1168e3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TR2520600047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab3750405510be08fb65797296204727a8942397adbb700edcf028dc6a00ccc. 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/TR2520600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4977935ae6b6136e15903890de36c01ba66971a5ae58d9c6e271bceaee905b. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/TR2520600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d1b7a285861f99b064536a9a18ebc35f0602bcc1edad89cf6c523ea07a216f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TR2520600010.