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 0x4a365a60352f6e2677a57543c5c5150750f032cb83aafba313bbff5b422989bf. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/018dc05c-2710-4691-8e25-5da8282bbfa3.json and https://artists.proofprofile.net/proofs/artist/018dc05c-2710-4691-8e25-5da8282bbfa3.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 0x8d1d16c96460eb7397aeec496b7d91bba93d81fab03a4da9de4f0dd614b4ddc2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TR3431500736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37269951357190430ade31048befa493fd3f7c155ba42970025787e020175904. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TR3431500731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d10331e496417f8446c6b64282fdb58a01e089c9b74ebac93dd78635ff56439. 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/TR3431500728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ed81639b2f6f825b4447a8428cf65d2db57ad70c3884625da2b54c30d4051f. 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/TR3431500734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a914b126106eceffd18a7b574217fe76b5ee1d39a942567422f10f0d203a28. 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/TR3431500732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35027a8fd7f9c84c1cf89a509f10b294336a0872ada2d103300a17be30f7132f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TRCJH2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e1d8134a55e7f6aff689e19164a9c872e052bc9a9e2f2b0701e93d16acf612. 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/TRCJH2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55d42e63c2a32325956162298d11c02bfd8ccf67930a91103e2bbd9d114be99. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TR0241103584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9a96ef8da99ee8014798548513c7c575046d5501e2c93ab19c31716ab04dd5. 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/TR0241103605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3d7a8efa1b12d2650bef8e551293a6c1c05a1b980ab223f4cb1a2c594bce54. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TR0241103591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe219c15f8b5588ae7d95b2b6c93ced3fcdd805d0e88d8973a4fff135aaaaedc9. 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/TR0241103601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf7a44edb497aebab0e945140b7c7e954bfffd4e9bad7fab5b9b33dcc95fc5b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TR0241103615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389fe1a204a118c5c96483638130d469536bc6ec626f18ede3cdbee48ff01792. 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/TR0241103588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a9c354da737ce9c8b5e5a34294fa0cda5aaab3a9bca5655d0f2f4579cbccdf. 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/TR0241103607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce613a2cda0497a6c04858650ec4382f66c40699b0185d4b0b16206f1af22974. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TR0241103602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c786e0cab66829588aaed7ab88ba09163c2f4a798a42ed706f83657712e441. 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/TR0241103613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e75428665e2f179a5533e36fe9585ee369c7bd46c51205a27ef0024c3e442db. 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/TR0241103585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964bd299cb37814f01bbbc90d683cbb32b5f3e7d105aca3d46eed426f00287f0. 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/TR0241103610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691996c442571fa8712e17800142cf7847e1ff17de650cfb6e6029ce43389c65. 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/TR0241103608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126f1ddc28b975db901c9e75c2d648d890905a9ba569c5ce3a9593da7caaa231. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TR0241103590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dc7c93c2e2483477a198c077c34fb303b85e04a2b251f709453ff6c41761c2. 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/TR0241103586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9840472e535005afe16325657b79596ea06612b0afa155b86bbf24c9066ce489. 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/TR0241103599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5046b746d08b0a45fcd6d30d34af3e2171e19a2923725799299deecc7c3a0e02. 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/TR0331309498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232e9d8dac556635b09fc7a0be625dead77fa52411f360f739003c3764e6706c. 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/TR0331309490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1654a62d724636fe5ce75231ed48388f2097e2785b7fc8ac6d3caae44a3de0ae. 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/TR0331309487.