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 0x747ed66e45f620fa630443a54b349a2661bb661bb177aa2b2b6564fce8d6a824. 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/3c47ef13-5af1-47f1-8e45-1e39d8c64aa7.json and https://artists.proofprofile.net/proofs/artist/3c47ef13-5af1-47f1-8e45-1e39d8c64aa7.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 0x31bee79fed18a4807aa86b2e017bb7607e03a72d0ea7f683f43b25e836f2cf14. 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/GX89G2317501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16efb666da4102b968e7cc0f15af1a637fe38b2e67dcbb5a728c633973c38674. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GX89G2364351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc506b1d18fcbe4e71fb1b756091440b00e340bd40a3e8bb32ee634851ce9fa. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GX89G2343885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190c07214d1e63a11017b94b70c75f5ba71681b195252edbcccc4855a2d69526. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX89G2313585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed143d53896769689e1589ef01e952a9a32a11620e3675eaf2c11f3870000ca. 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/GX89G2375408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97f4e857ea1aea187d3e7bf56ba19d68408aee5cdf8c9296e8853725e86d302. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/GX89G2315750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3eae580c08836bcfb6c5e070e537f496c30271515d89ce6ec5d6367424cef9. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GX89G2374836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4a2a4e83547a0a65ab4f401c68d0d269f0a18fc66234ee76e5421e4f936c19. 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/GX89G2350706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f1415e75fa742715c728b8701f3dfbbce41638a2e92d39a33d9c3e0bbba97f. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:23:55Z), 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/GX89G2331192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7390e6968661f175714f99fe5839ca09242bfde64161ed400e076b9970e0fd2d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GX89G2321984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e68eb96399024d78285188f9979a49294a8a35653c7e80bd3eda02c758d4f8. 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/GX89G2338664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a282179e2910c6977b6b705e9cfa938d2195ac6615e93d831de12f2436dc15. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GX89G2304049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea20da1f1e63155a85d91ccf2770f0232ca15fbde352f0b1afe2a52a78090ce. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GX89G2377910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc6c18f0ac20ba0f2ab3d36ca568b4742840088812b01c17b2b7e25a11e85f3. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GX89G2355986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd943a66bbd67c3d084e4377ecf44a6e0698b2ba126ea20f1e9bfa03ad4666771. 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/GX89G2377311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef15517352f2f95188b0c132b9670bf549dc3545aabf41fb232183fc0bf8120e. 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/GX89G2312542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06254ae6ffad226599c2ffea3a2244601da6f5ca3dd90410237dab4ef86ab83. 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/GX89G2375561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7986b988b4a6c3b6bd69d3b90978c2f91e6763e4b7d6d42aab2bca50ec98951b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GX89G2311317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51092face46c6a02d96ef2ee31b8823363d89998dcbf72f3bf3216a7e5d9c52e. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GX89G2377730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e09b1be984b4eccb42e87bf24043e1272a2d1a4d18c75b9f9dd753ae930964. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GX3HH2371426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84694769261c436b26f26ea62ae5497cb6bf1edcbd80bd655f2ab5a98ef7eb89. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX3HH2307391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f5b151b6d5f00ff0a59e9c08e3ea22d3f89328a671aeb3bb2c1a85be2e8d71. 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/GX3HH2328965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9063f43058541e2b2cb42b65e0402b43bf35e9719f2bc440163d41594708e647. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/ZAQ652500246.