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 0x0eb1ca1afb8aeee8764a5ed7d0505e481e9d7aff39a41cd5e808cbead047698b. 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/c8fe0af5-3336-4aa6-b500-78612708452a.json and https://artists.proofprofile.net/proofs/artist/c8fe0af5-3336-4aa6-b500-78612708452a.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 0x2760e7df46b726296820367f31599af32c6c1344390e072ecc28cac92c692a37. 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/QMFME2228258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c6c73d2512b6ace036fd26e2af29aca906cd62fa937786b7160efb4387563d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QMFMF2228973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2760e7df46b726296820367f31599af32c6c1344390e072ecc28cac92c692a37. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMFME2228258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51f2ef1e2f37aea2e023ecb25b5f045d957711bc442141ac203bb06d20f9787. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:07:48Z), 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/QMFMF2229117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f48d61c8f1bbcdc668e393d244166aef8ae4149120b2d83d3eaa91868cfca6. 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/QMFMF2229152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c6c73d2512b6ace036fd26e2af29aca906cd62fa937786b7160efb4387563d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QMFMF2228973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c6c73d2512b6ace036fd26e2af29aca906cd62fa937786b7160efb4387563d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QMFMF2228973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6161a28cc403935e3b2a0496621dfc805a542f49a6889dd8bc183e174ba4636. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:59:24Z), 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/QM6MZ2315003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6161a28cc403935e3b2a0496621dfc805a542f49a6889dd8bc183e174ba4636. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QM6MZ2315003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b0b4ffa5fb04aa34af85eb63d7b9c76ec6b9fc92a54aa2d3b3a8703e3cf783. 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/QM6N22332751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b0b4ffa5fb04aa34af85eb63d7b9c76ec6b9fc92a54aa2d3b3a8703e3cf783. 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/QM6N22332751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b0b4ffa5fb04aa34af85eb63d7b9c76ec6b9fc92a54aa2d3b3a8703e3cf783. 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/QM6N22332751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581d7185004ebadda4df24242ea64f78ea392fe6a9f54d572655716c44a08ff4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QM6P42356326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581d7185004ebadda4df24242ea64f78ea392fe6a9f54d572655716c44a08ff4. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:02:17Z), 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/QM6P42356326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e205e2556c0e43aad3a849506260f911c67c4c7a64d7678f738f57eb38e0af. 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/QMFMG2303555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1fcbf49b531c800e3cad5adf7a02369e009cf58fa6a7cf9cc05a26284cb193. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES31E2417036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a059b558878912f635a1b08a82f34c974ea3d66975256973ccccd1fe9516528. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ES31E2417038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ab24089b40ad6db6eb480d22f2803003cbd94ed8a75dddce57c0f8c4ef7361. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:07:31Z), 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/ES31E2417040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8220080f4dd48e748e4af42377753c8daff2768c6204be519f0858047a288089. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USA2P2528015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198faff36e63eac902784cf0b2eab8f1b63efd061c51374d9849f1281bf85ec1. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:46:56Z), 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/USA2P2541919.