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 0xbc06c59899c95c23d11897214762d06eeea76d8d48f773b223d3b9f12b6d809c. 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/49ef52d5-e5d9-4d76-bc03-0a2c40cb4c16.json and https://artists.proofprofile.net/proofs/artist/49ef52d5-e5d9-4d76-bc03-0a2c40cb4c16.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 0x59046eb828e494ba403f308b58a97de919b0a36c1c8b8335f03b210bdee7a33f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/BX0CN1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3345ca97e1b6949791abc11d6c7e4b5b8d15289ca938578709577a136c9f2180. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/BX0CN1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11ca520a6a224e2cd13fb2de55b2c1ebdabacb5097eec05c53d22962781bfe3. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BRUM72002818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a50bfb47d7aef43414eb7da85ce7dc63d6029e3529b3a7810d985bebbbbb0a. 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/BRUM72003264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf513dbbcd8682007a79d08c523353e64e92bcfbe045b49fee4d59045941d6ffc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRUM72100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e740663b3f2078306a8f767071a0afe626aa32297b16182927a804e40b4aac9. 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/BRUM72100675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf513dbbcd8682007a79d08c523353e64e92bcfbe045b49fee4d59045941d6ffc. 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/BRUM72100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce39a5773abf85ec9e5f5ea0a96ab5b9f7a8d85885aa9c7157556113baf92c9. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BRUM72200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf744d4f5b324db2c8640a1ceab25f57519f6b09af02b73ef8c157234896685b3. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/BRUM72200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25754e3085f4551046bf92577bcf34278e8d16ec229f3fd7ac0aca75f0fc5b32. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/BRUM72200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dd5c254065a54589d113647b6a34ebfceeb6b9a3915886acde9ad26942e6f1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BRUM72200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77729756943bf92adcedf7c858bcf418c02c9c51e330e8c3088460186539ddc5. 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/BRUM72200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c1b0aae0e042b3d3f549e04f5f089d9a7654a0979f1e05d8dcc6bc728ac6cb. 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/BRUM72200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c2006d1e6e470d84e2759e397339ff338eb2e635894030efcfdfeb0ba9791a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:50Z), 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/BRUM72200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc954c87981a875376f9ac7003cc45e66be8b1f4c5acdafa7d33f9e1052b0d8a7. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/BRUM72200687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a860678e7e574ea90944100c16c6cdd40126170571b7508e3b93ec650d1d982. 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/BRUM72200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1027fd55d5a856fb2fd0ba6f0bb6a8d31f5da7e2ceaf03447e77c67cd658782a. 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/BRUM72200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb504499ef7a2a62f9d9c47df298ed178f9656b9cd9d3f35a73c95b908de72eb. 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/BRUM72200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf007336c5ef0a098301b3ea6f4659306404b96b51faac142f5fbb5dc4ceda63. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/BRUM72200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6566e89432f83208eb69556c062b7e4051cd47a8ae07b16adc1bb62b580b0ced. 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/BRUM72200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263b51ae66ab85ec38b1debe962bae9abbab8de2de5ed11f5c77f9ecff87b35d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRUM72301162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c020c79892eedabcf9cd2f91441f82b396ca8e8e17746e6ab5e537ca11db4de. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRUM72301269.