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 0x25075f9827f9884560f3d5b2ce28f9f692c9e430f2d6a47e7d5acb0b5778498d. 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/26c1373a-ad9b-4a57-b708-01108f250086.json and https://artists.proofprofile.net/proofs/artist/26c1373a-ad9b-4a57-b708-01108f250086.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 → 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 0x7c00b4afe2e8de12b7c8b34df4e1d0d2d7c64edcd0b6a9e40367725dae1b7cc0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWFM2477701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d75d8107638a7f2e6b1045b41fb80000a14caa4ab026e0c42c87c779244333. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZWFM2478236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3af6cb74b0512d2d902f41d69443fca6cab9ad29439f8a4371d9c2a3a312901. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:20:02Z), 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/QZWFM2478238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee2d366bd43180d123cb45f6744382f134e2f57e87008f4d83f13b692477088. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:50Z), 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/QZWFM2478241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151ee05b33c2a1fb4f3faf980ffa1c713abbb9cea6fbad9b1b8358f67587ceca. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:01Z), 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/QZWFP2454088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed94b2ffacd9e7716e5a7beb61d151fbf62377762cd553b54a4ad452c7741a95. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWFP2454090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c176a2af15007b0805e9a8f128210a35e39bd6389f317c19129f3b73ba520b3. 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/QZWFQ2437064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cdd74bc492ae129c33edfbd95ce9c7ad97ddb131efd4c9e97fa8c545b000c9. 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/QZWFQ2435482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee693c1688d1e3845b89748d1a0072d46636e21d000c470ead39372718ea0e1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:44:32Z), 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/QZWFQ2435484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3aeb048c6e3fed89fd5b37f1303b7552177d0d4df25705de2197a0215d72ec. 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/QZWFR2455576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc323d0bda2ee1a88ec42a1a9dd87c946c14610a83df4d6174ca8f37f374226c6. 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/QZWFR2455578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa532056988087d573b81457b10f76838e72aa94b0706f743b9912340f5be248d. 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/QZWFR2455579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af27478275751d155ca5ec25d9c1926b2cbbe844f94f863561464200b9b99c2. 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/QZWFR2455580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186ed857eda7fba324422e388b4e9d38ab9f39b053a7888ce7bdf15b353af110. 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/QZWFQ2436333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1516942c6c57f5ddcfa4ddfd14cff41e834194d1f11ccc47c3155465dd34e893. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAGY2321097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176aba5a81d46fda2f37fe686c74e35b526ca14d2e1c48fd41a0e85817c832f1. 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/TCAGY2321107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c52a1af1a8f26ab54adebb72a0c9b4ce30aef971b5f1efa616e8046985d4cb. 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/TCAGY2321131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabc33fed7b596cb89b07a6cde95427bae2795402441efcfe181981937cf8362. 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/QZWFR2451243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48900d995e81646a6e237bbf3500ea07ec1c9a8010329ffd312d6402fd6eb07. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFM2478247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9ec6dc65cb37b12a3861ba1b7bdb4fe4094c75195445ebcd78ed8ac39c2971. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZWFM2478252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663c56fa4837f21f48a54a118b600e8b852d2be2adf2f270a1234ceb5a009847. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFM2478254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fc34597cd79d766518bff5673f7e4006b5d4e43eab4e9f8e59379ed60eeb88. 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/QZNWR2583879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635964e365006516a09d1256c51ea9a2a140721828ae58586a9849d4dfbcfed1. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:39:58Z), 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/QZZ7W2568886.