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 0x87fd7c16ddb3b7df955f150da924e11e22f85dc86a7193e05ba542abe7e579f4. 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/c5922e8d-34cd-4bde-9841-14d770b811a9.json and https://artists.proofprofile.net/proofs/artist/c5922e8d-34cd-4bde-9841-14d770b811a9.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 0xbcafd32c48301a8022e2a8386debdb2c6b73602b0a0a22ef0e37b00af1bbc978. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLM7H1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1965dd5d5312a377d302de1da1d61729188ea611c1cee65c4f472791edc09fdc. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/NLM7H1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1787fe9c4c371a3e07c98134cb6497591c6c2af3e8c96c700284aa1663dc56. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLM7H2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a32a0696461912d2c170bade3ad80916f8838b1311d48d29655510691e095b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NLM7H2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9f7c44a39272bbf4ecf9ce9fecdbf7e8c4bd41bca79e5fe1dd8e3540f9ecb8. 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/NLM7H2100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d97efdf81715097f5ac0b3650c96013182d8b8a32acd20c847be6738b91791. 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/NLM7H2000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1787fe9c4c371a3e07c98134cb6497591c6c2af3e8c96c700284aa1663dc56. 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/NLM7H2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4df845b3d8e3a6844f8fdfd397e58f67b25e7cd264f968e738e6785e645485. 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/NLM7H2200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d7564dc7d1fceaef95610f80d4513eea78c5c99bb8f91f7a1aae903ffea1f1. 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/NLM7H2200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5c796c5ad6d817889f6c400a105e903bfca32e24e7686cf22cdd5a98840ee3. 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/NLM7H2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479fdec140ba2c6b475742434209ac5109db8a317e2f40d201363403d50b6ca0. 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/NLM7H2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8fac71d1d4eed26f962f52fb1e797d7af79e3ebf0488e74b8a272f4a055fa3. 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/NLM7H2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bee1db648de30d53e6e28444b179d783219ee8e9caab37e92a09a61c1aa3043. 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/NLM7H1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b620f4ee41d2fe3ecc149b11198ef374d6eb308c4f4d948f273f1a3e52c021. 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/NLM7H2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696d1f6f9afe97de367643b3ce0bbc99f4fe6710d20c92c513b1b0d937fb82f9. 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/NLM7H1800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bae3469665aabf8fba544e6bf40f75fd00d5fee53a12474ea3ca9eb4659726e. 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/NLM7H2000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f77594174b8d39684141d69aedf4ac9e81a5f72e319e6419d61688c3910fd6. 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/NLM7H2200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3d7092eb8ad544f8caf6b8935e947b9c24318cb49b431b97de18eea6211e62. 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/NLM7H2200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1199e3e5fbed9a4bc4aec7cfc912feed4718123c944f7b902795fc6f6a6109f6. 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/NLM7H2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e6d9162ce549d1d5aa9056b68e9f30bb19948b5a747664c55de1c99dce3081. 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/NLM7H2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e978d3b026a1cb65a16e36e010b00daec965b27f3ad65ba5914c5e5869800d1. 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/NLM7H2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9f7c44a39272bbf4ecf9ce9fecdbf7e8c4bd41bca79e5fe1dd8e3540f9ecb8. 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/NLM7H2100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479fdec140ba2c6b475742434209ac5109db8a317e2f40d201363403d50b6ca0. 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/NLM7H2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfea86bbb82f2506741a4c3b91cee545be489cd985f5fbe6e90907139edbb8b8. 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/NLM7H1900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de1671817522c2b6f7193f42220a0aeabc61f2922bbfc04647d9ebbaae51c56. 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/GB8KE1652477.