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 0x1bd8227247d0a8b6568934a58ce955ea498391e38c6a95cd602d27c07c6cc188. 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/a63f1601-bec3-4b18-bae2-fa915d2a60cb.json and https://artists.proofprofile.net/proofs/artist/a63f1601-bec3-4b18-bae2-fa915d2a60cb.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 0x0d86b4cfdef73a48d0a46f0fc8c2dd181b5298c2df9bd6e65914d9d63623d891. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA7WP1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4337fed93932927d22463f27e2c69ec50a73411936ef3d4477a9d641f649ee4e. 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/CA7WP1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660ca6faeaf8c5117b64c2e70ed4d48ddce93928a3a413031a6e47d8bdedc3fc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA7WP1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4337fed93932927d22463f27e2c69ec50a73411936ef3d4477a9d641f649ee4e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA7WP1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d86b4cfdef73a48d0a46f0fc8c2dd181b5298c2df9bd6e65914d9d63623d891. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA7WP1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd63c72f3e9b2d41f04bc0554eded9ec86f33dc15df924cd9b613ba67433245. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWT2087155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffcd562bf87c6779f211ca84a6b639bad93dd922dc6f8943c9b79998bf7b7aa. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWT2087156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c9073db2834d6e77b7106bcbb4719aeae70fa5ea779897c8cf2bfe4576c1aa. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWT2087157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb36a2c0adaff40c93baf5e356fcbd450f86a98896034aa81d631ae7524806e7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA7WP1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb36a2c0adaff40c93baf5e356fcbd450f86a98896034aa81d631ae7524806e7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA7WP1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335ceea42869db9e80441e1a882b094d23122cfa63a20d10384be1072c308213. 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/CA7WP1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2823e6ddff18fb5ed3811fcf34fef5d49fe4541ca81c27edcc88254c1cb05762. 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/CA7WP1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7988635c36cd3c3e3f29f16f276f383191e24b0f53c628db4ce1d5a2ffcf7172. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA7WP1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa88299aa054afa03e045d3fb547ac61597cc2b5a24b5e7af6947f472ff7990f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA7WP1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dfc0835d79a1c762b7ac59d25f5fb2d16cb5da0ae73c69121ff9e21779d199. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA7WP1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94fcdb0271695445b772cbf07e2bc7028f02674c8834d971262113489dbd471. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA7WP1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082ade6e98a463aa83107adac831ad8922cf5554e4ca6ad1c60768cf61b04322. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA7WP1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7364ac931fd725328d04526f2a7af8cd72d7f01a66d5712d4f780701850288. 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/CA7WP1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d8997f29855fe01ef70f8fe84487ee217a1a3390a1bdee0a660230863400cb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA7WP1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357610fd239623f64bc0b6398c5372ae44160f9dc9c2f383539fcd1ad4b9af38. 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/CA7WP1200006.