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 0x19f60636163f71ce245783a1fbe0561d5c9872970d5237a7d9e32f23a89154f4. 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/bccbefd2-6246-4d5b-9fcd-490a8de10613.json and https://artists.proofprofile.net/proofs/artist/bccbefd2-6246-4d5b-9fcd-490a8de10613.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 0xcf89c6a7c9ae824c6099cd5566eb00aa7ccdfaccf9844978ae8814fc156fe1b9. 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/QM42K2297815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bd477392352bf6ead381c9f8f007ade9b1bd93d702b50af0f793a5df885740. 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/GX5MX2214001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b7b36023671edf9dacc4b5038c0c5fb62336be2e31beefd120e40128128133. 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/GX4R52236299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f08c505b19d199a801a371dd342ba8efaafea50fec6f276cfaab4ad6bd9656b. 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/QZKDK2054484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c2806d2eb816da4141bf063e1b209a40cec62ef94aefaf1ec97308397528ac. 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/QZS672233673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5625fe872cce6bd1c38453471978149123d58d89182d5347cc109b534b6d92a3. 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/QM24S2202795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d0186f4f3b1761a57819ff3de9edbddacc475bd5f512cdc5ae8336b1c09cf3. 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/QM42K1705831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e49d5209faefe5f9b342ac95e5cbe66ed5dc9b7b944125f7a42e3066751ab2. 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/QM24S2106461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8865e8d9b1202a651a1207990d25a3eb2b0e6a90e407f65ff3c214655fa66a5. 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/QM24S2105898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8246b86040ed3268dfcfcd48878d75520ec5d9aacf1bc4429b79bbe51f246b30. 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/QM42K1760208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6c8e46097a0d584aee4f67b3099fef05cfe3eaaf6507bbfa71c7118b002660. 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/QM24S2201420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7753d1c89efac05079bbe05cd9c2ac8b2bdfa3268d81c88105e8dfcb95d73a14. 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/QM24S2200811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78049384f8086262f8c9fbc81cd0ce8b1431621a095933a729b3b55c31697dbe. 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/QM42K1735293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4837859331aa3ef3e1d2c4f7eeafad27435153141a690015b79177ba0e33310b. 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/QM24S1802862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa640bb6b4b378166769e50bb6890d41319bcedc40d106f12ae15d366b13c00. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM24S2107619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaf609d1bf70a0c11ea30079a71a1a62b87f922c24114e4d3e80cb0d5e6d36f. 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/QM24S2107588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607d8eec7c548cfe0d0fd4d6f988aeb082c905e717fb6ebb64ecb2d659141017. 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/QM24S2107370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b3dcfc7a71d43c5928ace28355cc6958091bb78c9d5685fedeb5d178ed977a. 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/QM24S2107359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda45545c12023ebead259a6d93d8f066e8864d37a0e451147906a2d480c2c3d5. 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/QM24S1806613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaabab019769a88523605560c849c86fb28f000cbdc32ce96d0b7597f367d5e. 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/QM24S1812882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846f6ead3d15691d9feaf957d5927fcddd08679b0e9676da65c8b83098dd4eb0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:42:42Z), 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/QM24S2107087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe827330cfb7c67e3179ec16eb28de15a303348f079f0109ef8a889ec7d3aadc1. 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/QM24S2106404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c003127f6a0f8c66b70f2375f128faeb379b283e7a8cb0cb7fb1c78dab108e. 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/QM24S1705813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd227ad5ac6c4dcfb71171d1f5e2acf07db9cf5d45e26c1d960ba989413a2215f. 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/QM24S2106189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18a649a42e6bdcc7134d31a92e5a4a0a05dce1a79c948c72b4cdc4234efee47. 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/QM24S1922621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831f711e1ad1dfe9f4dc144aa54a441bf4fafe628210939bb643afe26fb8e42c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:42:43Z), 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/QM24S2105932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743eb6ce9995b410d4243450288175ce2b57b3c5d0bd38f95d56b24205d9646e. 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/QM24S2103585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61494e7cde94736f0b029fe97812817718ec49de639819245b720993f1d0ed2a. 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/QM24S2101846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634d0f6cc50990b2b2aac9ec935c71bc935c8f469b0c5808048ec8f32a46b968. 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/QM24S2002155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7922ae5fab6f4278663d73d1aa49f26c1aabab59ed2a91cba74589a81e9fa6. 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/QM24S1705814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c2806d2eb816da4141bf063e1b209a40cec62ef94aefaf1ec97308397528ac. 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/QZS672233673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9956c72180a2089ff38ed78123e6261bdebf26d0b7faf02a5d6575174f8b7fc0. 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/QZMHL2202484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680c90085f5d65f0c50545f618d93be3ee5e6428e1c98450d7735ddc224d15f9. 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/QZMHN2224881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7bec01c9e09b990fd34b7b96758fc15f149f98e7e144fab8a791d7d1593ad8. 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/QZS652285297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2951503db726fc7920d52b331267246ca38ac3846c48a8ed0a58bc1c3717ee. 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/QZS642283839.