1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6b62022861702f5f190b3aa63cb56b7691ea658a41f8eb953fb01e8f80c085c5. 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/47df4c24-eb8d-4f1b-85f1-6a3de3009bf3.json and https://artists.proofprofile.net/proofs/artist/47df4c24-eb8d-4f1b-85f1-6a3de3009bf3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mechonat Hashirim Hagdola (The Big Music Machine)
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 → block OTSBitcoinBlock must exist at that height 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 0x9e117b8a77a7bdc0d2d12e371ac7b0acbdf7a059ccb8913bc83c06866470e97f. 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/IL2110705020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0b4f142fddbba6b2ab2672f44ad3465c6fb9d206994a0de010139f1805ca00. 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/IL2111306090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6600c525434cc49cbe42a46af834baa45179976ae449e8ca8450948404f08a78. 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/IL2111808004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f2ac8fd638b8a125a1c0e395837ed6d282ddbe959f998dd259b54e983b1e39. 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/IL2111808003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f753a4a3242cf86f841a5fd57805fee1080e27dfb80fe2a16dd83efd1c6ecff. 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/IL2111808009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b8432194ad5bf0077d0ee2cfcb8d4d548ce8b0206283d6cecc58890ff7b37c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/IL2112102001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7df4940a5ad43f0a1392b5dd67ee130c7acafd0252dff1c944a8ab66868d0df. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IL2112102013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fc139a44e7018175daccad55369b9836d80cc66261d3f924a570b4b16d82e7. 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/IL2112102015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20af48b84d44e14c9e694031a273e37321c47785c9c4ddd121df3f67e1526da. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/IL2110599025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4065c1c2602425a3dcfe31fcb4cf21cdbb5487ecf8d1601a888b2b3bd15f1b54. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/IL5842447362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea918e59bbb32c92d0e9024de71856b529af209a36d1a4d2314eccacdcc100de. 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/IL1022011979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842e66b794d57aab471dabee1856dfd268ca0e5c68cad41dce8622148d32eaa5. 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/IL1022011971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca295a26b7926a7adf63b48101cd6f52ef5eaf09ca3075b17884674e39a9575. 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/IL1011902515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65af223d866a7dc8ebf93cea1089db45b510718844962d5c5b5616ca3b034e73. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL1011902527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8629ff81376116cd7ca50cb3752e9dd7dc27ee197dba923f443cad23b3af6985. 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/IL3171201080.