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 0x62e0bb8fffed9ae2d7ad8edb6e0f62a96e1a55566ae6114c45d5df6fa0bccdde. 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/68351c65-423b-4234-aa86-59943489931f.json and https://artists.proofprofile.net/proofs/artist/68351c65-423b-4234-aa86-59943489931f.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 0x18663adfda1be6574d1bc658ca009706a1b0c63c5e9ec7b96a7a7c496fc31503. 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/BR9Z21900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9032ccc99654f4056ac4a12680a2b1bffd6cedbd2773cd656c66fd7adc2d9e88. 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/BR9Z21900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d08cd973dab5d6f99140e5661ab1d63e1caba7f6a10b264b66cd30031b1e19e. 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/BR9Z21900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f37e7871478e0576f388d3e4cad5a8844ecf9efdf8a147a03b87955e04992f4. 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/BR9Z21800192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58b3a732dde3b91c6b8325e805dd822ec725ac2d95fcc53400742b5606b959f. 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/QZ5AB1911466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2591f7362349c2af3e5ed090b426ca267d103f91ac0cd36e2702af012fc093. 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/QZ5AB1788336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636cc32011a049b5a7890e4fba7054048b8bf7f27d5ecf9bc374d4ac4321bfb4. 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/USL4R1814107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9645b95d4bf5743c828f3ae35cd390ffcbba99efa1479d266f6fe513cb0451. 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/USL4R1814108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317cd4367610d912166046284a5c428d30e3391f9e4248f63fdf2f82764de3d3. 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/USL4R1814109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d997e832307c7f2900a0571868067eb549b1b110d587de0cec761a64511a1a6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USL4R1814110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959bef4f23e89fa35415a6ee9d410cfdfb242e858deabf4e607b6c2c5db1498b. 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/USL4R1814112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae2b62f5ce4c3c3a8b128c83b88c284c796c7e4de558bb4c3e3979a19d93571. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/USL4R1814113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2b5dcdc209b29b3e2294eff7b1c61736c4a33f57ad8696479eb766d8752bba. 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/USL4R1814115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332c9c11c9d02959f32142740ed2ca4923044df73cc0738fce0a6caabe5b221c. 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/USL4R1814116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde601dbe9050c512c65664f829017acc51e9d0678d1cf1af371022b5b461b6cf. 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/USL4R1814119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340a2e0bdfe36e55bad7570fe19ca8770bb9185cc39b6afcd5946b16cf269f8c. 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/USL4R1814120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1525a7893ecf3cc33f511d57971495b59bdfc5f370209838827b9bdcb002a7b9. 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/USL4R1814121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0011afd20e520ad931e9cf41fb603269adc31420e4717247b24487af3ed7c8a2. 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/USL4R1814122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5785d479792d6691dc0039b106ffed45a3ff326282c4680c46c435dc81b58cb8. 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/USL4R1814125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ec53df7587c4d7fe1fba6f5650b383a814e0e5bf49da2af93a9d8ca019f09f. 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/SE5751999267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1bb655bfd9f05c690281cb09811d82895f690caee180c912fda8cadc612fea. 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/SE5751999268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa656aaf48ec283d0ef7c16849693c9d260c840beab1e7d86d129109124cc89be. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/SE5751999271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32065f28531fba74a866576d8ef28cc23bda4ac0e7cd6c7ebbb35d2b5cc2b66a. 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/SE5751999272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc031bd8c772c4774d5ce80869950c3761eab63f2dcb5c08dc87104ecdca3f3f. 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/SE5751999273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b213bbfadb68a4b111f810b249f8775930600aa0e4295055a550b4d02b4330. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE5751999276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cb7059f3cd7ef095b2c560cdea33f700973f50ad5a9b0dbf655c0282d849ef. 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/SE5751999278.