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 0x4e9754d3de02f7fdf882df4620e016fdb2f03ccde147a4f8acdd3e93dd5ee324. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db3fed55-60c6-41b0-9f17-cc44baaad130.json and https://artists.proofprofile.net/proofs/artist/db3fed55-60c6-41b0-9f17-cc44baaad130.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 0x6fd268de62e7a0ac27ff78f22f2ddbace1379c68d38421822423278cbeab6dbb. 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/SEXGF1713709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64344c1d3b21d176f49b8ce45f6241b325df21ce8cd0c39537aeadc87a03cd1a. 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/SEXGF1714102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9feae33a9d86e9929ed9c34a8bc676e500d3963e43674bfdaac1221f439a3bac. 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/SEXGF1714101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72298e802252b3d328e27839078c0e28841fe14af5251eb76da54eeddb23e4d. 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/SEXGF1713702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca3c193b2e0dd57b2b759734e53a60d7186cff29313063a87ad3bda04db12d3. 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/SEXGF1714401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4881ccd8fd1b8f9b4c68c4c49bd2b18d9d80ad4810b2b24eb29811adf45e1a9e. 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/SEXGF1713713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3e5c58c151485db14f93d8326e4ec5d52cebf7ccddf4a1bd17c83d0314cdd1. 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/SEXGF1712305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a47006bb37788c30a04dff2ad03f19b7131af2cc83caf2966927fc5f51c96df. 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/SEXGF1714501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a52cadb379341e3a4efe08984713716adc98e373aa632c8a7067167d60f3564. 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/SEXGF1712304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac51c6b9ac24a5df481b0ad9c760bb718e6c7dcbdfc4213d446c8167bcfc3bc. 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/SEXGF1714601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6c97c3e1d017580c497508569a666e63d1770f1657eada2a13b005b8039a0e. 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/SEXGF1713603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30a3321df2c1cdd4c829c07e39c49a89c8dd5752f0acba094eb5e74b9ee3d2a. 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/SEXGF1712302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae250bdf6fa3de9d91a7dfed708963ba17ca22fef1a89371d6ce54bb5af2cd4b. 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/SEXGF1712202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9feae33a9d86e9929ed9c34a8bc676e500d3963e43674bfdaac1221f439a3bac. 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/SEXGF1714101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dacea1680c10c63a37fc041abcd9b3131ca9af56453559f65717a88aba05f9. 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/SEXGF1712701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4881ccd8fd1b8f9b4c68c4c49bd2b18d9d80ad4810b2b24eb29811adf45e1a9e. 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/SEXGF1713713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656d3007fe469e02b410bff1bf7a52125502e3ce1721b1dc9c97557ba7040c1b. 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/SE5ZO2003401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801fdbd474deb89eca040074a6bfe8d69b61a108a7250b50aa313531b10e56b7. 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/SE5ZO2200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6c97c3e1d017580c497508569a666e63d1770f1657eada2a13b005b8039a0e. 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/SEXGF1713603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796d067cb36ce71430f93e1b1f61f23eb824eb13cda2fc680e0348de45f19fd8. 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/SEXGF1713602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8263c1ebb876b6edbc15f218ef1418ea0d44b367166218fcc08e5ae7f2d944d5. 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/SEXGF2202805.