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 0x2fd3a9df3ce9f34bf23b5c701b9b5c1afdc553e8b5621189c77d746c71343a39. 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/3232f2ff-1616-4f43-9e45-2645851e1193.json and https://artists.proofprofile.net/proofs/artist/3232f2ff-1616-4f43-9e45-2645851e1193.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 0x0c2ed3fa076119a10a6cbeb20ec0c1ec2bef29bda33a051d8e7b0deefc886d6b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:03Z), 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/GB8KE2202214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afac17de05304246b52a90d8722a746c165ba91e4c5d48a27a046ec749be934. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GB8KE2202215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa027036183de19ab23f2545812e82fb10293968a2df3fd94a36b8354f2ed2082. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GB8KE2202217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cefa05dc983892e538b58a45d0d8411ae0884a1a6249b12f3ad718cc243a8b4. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GB8KE2202221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549a595a9ce9e6348ca0283a674aeb5fbb28dccb9004d61ee515a20176dc2fb1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GB8KE2202222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492a1d4aacdeaaddeb469fb9adc8591aea571a094880de9be7dec589f9cefa28. 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/GB8KE2202229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0701f9d07d96d88bbf7f8c93b5993a186782dbbd46129de8b248b0918a6034. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GB8KE2302745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a90273c3e3689f6ab80377acc725b42040cbb7616a6d1fbdea3f85a9b95c44. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZVEM2377746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf7a556441fb9b5f96cb871338478ea5be67c37b261acf2a9ea868cd10f2a17. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZVEM2378211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2503dcbe1efa40846180233876686647b543da96a17a305c217182bd587bf84a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZVEM2378212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea9323a38aa9b8debbe8ba0cbc0e4bd0245e75fec8d93a6dee06a675b91466d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZVEM2378213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab18f1b3c673120f7f2427f2eb19981c21f5e78a94f4a000ed416f230f5b149. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZVEM2378214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3826ac5b562e3da6151b8f321746ed3f328c8554ed8593b00db2567f1a59a3f6. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZVEM2378215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c43601371f088878a0cf48973953893313fb9cdc596bdc6e03c1a9339a55ba8. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GB8KE2402749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24da0677bb2b0f4239f5be2ae8e9b037982ed13b35e3f7b585750a15941d1030. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:00:47Z), 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/TLVEM2466221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9690d0b861f6a09daf469501b55bfdf206b8a0ba32ddbaddbcd6cb156959c21. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TLVEM2466222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96677b2c5fa577359192a1420d8801a9117608956ac9b1ad234445af1df5d0f1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TLVEM2466223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddddf0fb35dfdd9dea54948c60cc07e3d8d3c149ade783f01fad5e099bcf0f69. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZVEM1833653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e8d2e3a2152ced1f78d56ed68249bc5737490c99b5e126ebb12105739c3bea. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZPEW2597242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21092ff6fb10329020f9aa173cbdc6bc94da7cef7bc24d185ba8fd8c4535525e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT4K52525422.