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 0x00a830d5e274fa48e3c6f102028ef741dfdb2e087d033884a4ccf705cd74a386. 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/fd88418e-9561-464c-988c-b02ffb597cea.json and https://artists.proofprofile.net/proofs/artist/fd88418e-9561-464c-988c-b02ffb597cea.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 0x97a01314338678d4f6211e54486f9cd6f4b7b54b9bcf33bd346694ca6e6092ba. 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/ESA012060461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80255109499ab177f192a6a7372d860b2ed28916f46434a0902d8b41d47ae2e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ESA012060472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e556cc88fb8665d09ccf0ad310349c210149c04aa36e3cbc6f583df4267083. 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/ESA012060479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd606133351bdc0e1a6157a110f3f4b37233f90ccbe5ec85a94782562a8b929d9. 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/ES11D2000357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90069d44301087811b0898096e8abdcb761988882c9efa6796b4cc413bc564f. 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/ES11D2300902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2df7a9c5ed34d500530162a224e0ab73bce95dccb51d6c3a29f27784623c1d0. 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/ES11D2300939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6649d461e928b4380c5d9628217c31d9c1c14015ff51ba360958f1c56c5250f6. 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/ES11D2300943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa60b3d75303784e6258c07d38ca4af0895aea4480343048dcce010022f81b3. 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/ES11D2300944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367ff8f08c421953f69d8cee6058a676ed002d59621fb4c66167a0d4e8f4a3ea. 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/ES71G2431365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90069d44301087811b0898096e8abdcb761988882c9efa6796b4cc413bc564f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:39:24Z), 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/ES11D2300902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4345525f7747444c78c04a98ca47dcd64b4f0004d5da914a8ac6a8bb9d8969. 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/ES11D2100589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cdc5c81528021d2c804962643487aae47dc483c9e287fa8f24b67d42a4456e. 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/ES84D2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bbdcbe26e1c4ee7818aaa891bc118ef058ab4aec1388a0d006bfd34896289e. 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/ES84D2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250b567513b5b69deec761478d0a0955da39a9d6591d1f304d41a22c95f72679. 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/ES84D2100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ede188081bab6aafbad9c17511072e09a6df0a650edc8c02466eceb5531e5a. 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/ES84D2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2f97f87302ed51e92f7b0d2d104a5b682487ef8f63a6229634637885b729b1. 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/ES84D2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc184ccdc768e39ab14c9b739a31c93ec2566a11ee8da05197226222ada17a684. 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/ES84D2100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97545524b79cb66d6cbf691a535db6e9bad50856585b84786c681bba14b1a221. 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/ES84D2100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2687db605bc2574aa4c4d107f8109025581ddb9e15566b3854699b3c2026aaa. 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/ES84D2100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02465b8c0180b7a1b97d637bc1ac0f43191374df38db1829ba87a857baa7ae6b. 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/ES84D2100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4b72e178faff1719380fa3d4aff0fea07a6056796cff9831ab21e622744c90. 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/ESA011671935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8af08e4ba1b6c3b52b4cd82c6b315f59689d6d981fd94b5f39880d04567db4c. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:14:12Z), 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/QM6MZ2306418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb011cba453e3774c7517c15797176b913324b30f3f847903900d62419ea077d5. 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/QMDA62426892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4484e75096107a9144183722bdb03d804223f7d5d5b5deb8120cb218346e7850. 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/QMFME2383338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf860dd34383ee9676380341f3e1ee8435b8ef472470db1cea6c9133d7f3ed3f. 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/QMDA62426891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1862d306bbc43f0a9d21285a757bff6c7d38d88ac0583de35640707071c431b2. 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/USHM92085375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28ff4759fa3f07394bb98773c45f2bc7e26c72de6297300d73a0695e87a450d. 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/QZDFP1932630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde8bbcd958562339f768db7bf55ec954b8fda7529aae7b412f0c806eb7edcd7. 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/QZDFP1932634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe814e819abd5b95c379023c515d715b04765c05e4b0a9e3a885dd2d983ae3a3a. 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/QZDFP1932092.