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 0x675447b243199fe9ba05bd4227d1a4a2ad28ee310c15d14de67eebf9f48646d0. 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/8773138f-38ae-4f9e-8f99-50bd4a3ff64a.json and https://artists.proofprofile.net/proofs/artist/8773138f-38ae-4f9e-8f99-50bd4a3ff64a.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 0xb8203730918a5f9a8eed4681412b8fe41fe676c2ef89729a2c6b46f482e3359f. 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/QZNJY2367996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad97a30ac437fca557999ab814622a812080c1fb30c9f0f10d6a3ff8e406bac1. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNJY2367999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9d9dfa96007f65c871ebd17722578b795907e1eb43c4031921cc35876af6bc. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNJY2368001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d9cd9c76e1519796ea6f9eb555805b7f20ee11372c2d73baa96780703cf5f3. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZNJY2366092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21aaf2c6d252aa2573f393d25874a9a8368b03f4b3f7593bf82f39ef4cbf5aef. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJY2366093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ad3ae372a7e4cba693933575d43cc43f2ce3e80c5cfc4b4ee92547082c4a79. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNJY2366105.
Nadie Podrá Separarme del Gozo Que Yo Tengo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538d2b787dd64fb21a681ca4155de9f6a4d36381c2598f1e8871b7bd276295da. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZTPX2393162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98a557bf2e5968249779f9966810d4c45137bd87f366cdcd326ee9940721d86. 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/QZTPX2393166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3d1cc879bfee238c9a61ed7a7b5a1e86929d6b52688c9d8272fe950005e0ba. 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/QZTPX2393168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1702a47fac03658aaf8d5fcc08329a2b2c33c70826459fdab5277183e5afb634. 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/QZTPX2393169.
Alabando al Señor Desde los Andes del Perú
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f950fda1a12746ec9013da7a72af3381dea5026ef9840258dea8c7a167941d. 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/US7VG2484114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6075e759282e80155803d06e0e4f9fb7957fee4e4f95912f17e0dceb6fcc947e. 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/US7VG2484116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0603e35a003388b2c039f63a8e28a89eab4229bb84f67e68d8944c7b5843580. 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/US7VG2484118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788de6c0c8b3b65111ccd6bfc368c215d28fe2c6cf9c34a2bb6cd1e863c2f340. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/US7VG2484120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecde8dcd39079dbef0024c41b2865ef37d1d81c6f027a975c7ec40242a387bd9. 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/US7VG2484121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7da7d3f47b5d6c2721f53c719b01935dd05e329f816a9dc48f692e39928a52. 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/US7VG2484124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9258fb7d8af4ba95735627687ac6b613834e27f6a3f3053a010b9a6da81ea6a1. 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/QZ5AB2435217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4075df5baf38f5ea63b2dffb6b72904dfe71adde4f35548436a9d63b64a1c3ec. 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/QZ5AB2435220.