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 0xba77ab79b849a0bd0341fe17fb4fcc0e22d67bceede6d3875d965f2296acca37. 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/249f806a-0408-4231-9c99-e4142e226989.json and https://artists.proofprofile.net/proofs/artist/249f806a-0408-4231-9c99-e4142e226989.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 0xa1aa0a4208eab219128ad428e72dbc219ed106d0542ebaca6fd5412978df90cb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ESA012018134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106c65992adb5370cf76e1c23a7264714c07f4bb98133b86c48c4ff28517b62a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR9W11704288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fba537f317330c5a139013e0c86f9a0db9a0608a0e46ef5baa42272f0ac9192. 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/FR9W11704289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f52953b3a8171cfd89f463498bc9b5080bf0c10b0d50e763195a04f5ce64d09. 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/FR9W11704514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52867f5c076589aaa7eba8dd772f60cb504397f307a2dccdcab45a8acd438d9a. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/FR9W11704291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc8b2e5a7bd4da4812de76af6e3a6c8bcbc76f2b5b0ba2fca711e65ae7fef4d. 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/ESA012028169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330a4205f75b44d377afa9fa869224526e73b6d34f628b767d547cb85f6264ed. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ESA012028170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa4ac84b61d1b2ebf059aa077d8cd7bfd9a2a6e83a70c7d26de9228597a6b4d. 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/ESA012028174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e9f7244589ca66035c26c9d5a30c67774aadd511d6018c0fce925d9a8f82f4. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FR9W12141678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07f034d32796a685105c98d921d816b27e99d509d717b418d85233bee406280. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FR9W12141685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65082632e8a643c9a1e13c74269ada7d81192b0104968ab51a3d3f06bde7a82b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR9W12318053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd41cd5a914bc032fba16d3c9561ca1e77ca0d2378ad19249e1f4c952c0d8ac. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/FR9W12318055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f0b54e23650ab7f789b1205b89b8628f8828c09815d2ac5db9bc9b542d923f. 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/FR9W12318056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578b4e93d1e6029a10c03a0fa7a6f79db0acddcc83057ae69c39ddb778473698. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR9W12318058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2362b8d9abd4926db62555852fa71785b0d86891c7b8eaaed069b89f284f96. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:53:11Z), 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/FR9W12318059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9650955eac00ce0f4651727eddc1f509010fcc52779f9b1e7afba392da68382. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/FR9W12316410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb5b4f66d01ae7b7d4ff52306fc4dcbad5ad91addb318e08e1688d05fd7dfea. 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/FR9W12318576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b14a555581f9e2d8f5618f8c240bde5e512c87b6449a21911227b91003ba3bf. 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/QZHN72583208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532a40ff5d18686247e55d1d2f484d66e02310b8e33761b91f34f58185b85a02. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6K2517418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b14a555581f9e2d8f5618f8c240bde5e512c87b6449a21911227b91003ba3bf. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZHN72583208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d00f85c0be88c0424b11daebef911c8d927e725088741f2df6e5fe2ba51f38. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6N2545606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc17d7f0854bae0085e0d3d950a95386d2a0bb96ca3c17bc69571c39fdb590f3. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:49Z), 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/QZHN82593079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fed3e9feda54e167c795c9d88c5d01dff793f84f4c905a3de2b4c684f0f93f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZNWR2580438.