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 0xa5177251bbc64c278ed1aecbb367364149ab621f990f7f623fddee58fb0417b4. 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/57ecdcc2-f345-48ce-9ce9-6dc6601ddda1.json and https://artists.proofprofile.net/proofs/artist/57ecdcc2-f345-48ce-9ce9-6dc6601ddda1.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 0x5549ec7c38405d2ae9b6d34982f4bb33e51ab69385dcdd4952c664299bfc2edc. 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/QZTRX2130074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fcf82adaf8c9137d76f5322059c53eea3f7eb7b1c8824f60bc895f67ae0dcf. 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/QZTRX2130763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438939724c124d8a0bd48a5638e73f6a30cb92fa4559c242d095e1405f5c018a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:58:08Z), 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/QZTRX2131153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197922de3384239f6e2ea17b6a85e687ab1da5163bc4670516462cd2a2fb3563. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZTRX2131224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b7957b785219a0b363e946348237ee300cc898e0e84d51e5a0062ff715d44d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:06:13Z), 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/QZTRX2131637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac130dfee2fa8c5a9728ba39e922521d67d11a19f621ff4e6dd3f920f2e2a95. 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/QZ5FN2200337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ceb5bec8e1f6f6d1ae648be1456a4e1ae835e2aa4abeff84c25188c0ef3d5b. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZ5FN2200341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc240b61d78e897fda0e1a7f63bc1dc57da43a77f6a85a0b7f0baf16eaab787b1. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZ5FN2200587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a56a3685fd86eee806e464ae46dab3618abfd34ecfa75d63d40bb53dfb0fb6. 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/QZ5FN2200598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867c3a1e1908e91e6d41a461a423e1a05464e7e293e81fee8aafa395889e81d3. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZ5FN2200588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f95c82858041babbceb2422794a8ce264e09d8b46cb318602cd9d983ecf1a8. 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/QZ5FN2200589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc506fbda4ec94864e6ec9f7bbc984b7afa10a0480385536b18df8f4418ae8efa. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZ5FN2200597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ceec95561d579659c54c4cb5413878cab3f37a65cecf15381c452097aeefd8. 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/QZ5FN2200591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0231e843e10b8fba10ec2d5743d352177d990c5aed9c8ff9460eb6929ae25d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZ5FN2200596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde4c8e6a9b090dc8864037851f95151c1c1a4732fa983bfe089049d689ae0c3. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZ5FN2200592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ca5f30d08f254a65e61c3371652f35a92e73d30bd61ba08fca240a78b75cb5. 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/QZ5FN2200593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269510bf4364478afd9dfad1c39693be26bde3cf9b5340b953ee9a153396927c. 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/QZ5FN2200599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb73791ce626a67d3358abf1c48af5ff5ce1bc7d424f24d224a766752a252a0. 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/QZ5FN2200595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb034e15bab47e8d0d444743a7faf21e7114c34cbabd54f3d5b24330de9fc45ab. 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/QZ5FN2200971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dde722efe8ae12483736d3d1990b3eb84c732215a3e952c1f29f465994e622. 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/QZ5FN2200949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3006a3f1a76a282bdd66925b1045aea9edbef7d8b97ebf5ad3553144702b6143. 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/QZ5FN2200951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af6166d13d4f20430a08d3eb1640d5811e094fd38be05ad88dbd7c7a658b9d8. 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/QZ5FN2200962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce9adee28266ba106dd4b260513812ae97dfeb37f1e6bbbf2f3421e43f9daae. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZ5FN2200953.