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 0x05b2e1f57cf3f7a86f71174cc25f3f8fe9779d0dcaaaa51463449e2aa1941440. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2b1b3fd-d841-437d-a337-f6b3fe096a59.json and https://artists.proofprofile.net/proofs/artist/f2b1b3fd-d841-437d-a337-f6b3fe096a59.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 0x1d568afe94c77245f6af100f72eeb99379ba8ea40656c1d6e216b24ae61c1ab2. 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/QZGLS2318405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac4492d3cab469476b851d0ad5fa2607ecccdbffda366ea8ef8ccdc04441de3. 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/QZDA82036809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17be7807bfd48eee1065747b7e9d2e8e9767b6673505a3e2f8a76df9c6c4016d. 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/QZDA82036810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8533c3bba9fc0728df876d4456f6fd805e4b5404217406b4bbce31b5929f68. 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/QZDA82036812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3bb7e52373c28dcca667394e2569a4e4c73f4431c58318613cb8bdc580a3a7. 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/QZDA82036813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba160217f0834c8e4fba26eb568a1d65ea587227810e3a71c12fc462fea097d0. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZDA82036814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527ee562e9ec4c038eb0d1112990e630138ea5fe5ce383478bcab2f59d0e0970. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZDA82036816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d672eb3ac603fc9322e53c0b697e5b7f24261857aaee893daa791654887c104. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZDA82036817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c596dd5fa5111a14ace27bf4d670359c56974f5bbae92cc3c3cbfd3c5f4b56. 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/QZDA82036821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd212b82bf732850b52a158e16302510f193a4fbb26d7749cb68871958b34691c. 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/QZDA82036823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbf406ef9363e1cbdadde7223bba54cd155ab4963d5c6b359b8aa90a443b893. 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/QZDA82036824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef163744f2693bdad6011f125747407196709fafd4017391b65d18c7f12d551. 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/QZDA82036826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484e628dcb21b6d45557736cbcfedb5d6c746e316ee440b2856151f9d46c9ae5. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZDA82036830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd470c44886d830c45084b115b7235a5e83f06b060bb237dbd896ae33428058f0. 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/QZDA82036831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb428948c0c968f864351529eaf5af85a4403be6bcd8bb30e8276b1b1c9213d. 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/QZGLM2519033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c117817a6e62735ec77f158fd98b6e360301cf99ec05a40c17182113519155. 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/QZGLM2519034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3341c66cd5b5e8ab1909dd0f3530ec0f744a0ada3f60d8289fde5feaa08bff. 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/QZMZ92389445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9497b6888c8614ff3fec57f4ac47b5507491709db0f6155a77adcb6b70dbfde3. 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/QZMZ92389449.