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 0x2ffe128e862a810abc13bf1ab45154f7a3a77d6bd2a88fc8334657d0d5020ee0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d82103c-5f2e-4711-8acd-04ecfe916d7a.json and https://artists.proofprofile.net/proofs/artist/1d82103c-5f2e-4711-8acd-04ecfe916d7a.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 0x525f210202ebe30958fa1f974ebee860663d2179c6df2b487c506e68d10b055d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SE6I32330041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62316bd9b9fad77fc72d3bceb5f4cabb4e5146c8f777dbeb4463bcfabe0b38a5. 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/SE6SA2331242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34513403d220cb67ed512a367f4b7aec730b12160b89b718c9bf4bdc00ed1406. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:36:08Z), 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/MXA2M2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56efb29c2f428799a750366ce1097c13b6bf21a04799ea4810fa03a15a0b905d. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/MXA2M2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a99a3fad90f6441946027092d8c2fc4680093f68e7eab065026f25f5234b44. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MXA2M2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f073d24a47d17ebbfa4743d888e3f9f94594d79c0c2e194cfedb268c8c5509c. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/MXA2M2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32861800f0cc2f23e9af7ce0f9a847df3595fa8f69c0f6644175eed6fc66ec2e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:25Z), 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/SE5BU2531046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9407267491a40d3295249ec6d5f65d2e2bfacced74b8b2bc2909908b2fe64f53. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SE5BU2530788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385040700a4932ae25bfd52ce3a9983f709cbe9bb76b8224a3b0d8d36fc1bcd2. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:08:58Z), 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/SE5BU2530712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a9026075c8858c26ccd9ec56f1bbc5601b9580e6dcd5b25fba4c1a3900e006. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QMDA62589918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe017dba136f4bddef0d5c8f8d64cda910c7ba514f555d3b904528c6139f28d6b. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QMDA72564676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ee0aa3fb2255e309b7f8f5415e0af6779f167ffe41500a247517f8fd27f405. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:25:34Z), 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/QMFME2535656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1d5a0716b7ddfa56f7f85ce566e13573a414f318bba74734b8ecff3b94f1d8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZGLS2440962.