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 0x6dbad213b2c63ef17c2ca009aff1d7e02352ddf0adcc64163e7f0f41de295484. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/193912ce-9391-43ff-b9f4-419c730aee1a.json and https://artists.proofprofile.net/proofs/artist/193912ce-9391-43ff-b9f4-419c730aee1a.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 0x097d96825f59829cc4d08c5cd4ad7dc147ced1b3399a5c160fe0edb6d07a1a38. 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/JPB622400766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8564e31d92c2ff4099eb06a01d3a463df681032ba33f9b5c7d327cdea7ac9c2e. 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/JPB622400768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8835e69c7a32915b67197df58c4dce9d0bf158ad21f48735b21f63a38081ac. 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/JPB622400769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb306b85d9b3a43d2bb93a1c5e537803ab6e0d8c5d6d0226a1ce5ad172fbf628. 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/JPB622400770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383bafbe203764577bba6cb984b6e911246efa18b6afa00479df389fc683089a. Chain 2 (Bitcoin): anchored in block 957287 (2026-07-09T09:48:29Z), 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/JPB622400772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec8fdcc3de82190e47ec2232e7be90d631c18497637a8e2b0f98353a7411566. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPB622400773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec138e3f0860ef2d81448f409887929ed0ee5572a5aa53f2eef476c533ed082. 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/JPB622400774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411abcfc9ce9830632ac3f11ef852af4bd768c46e6d3b2a934cb792e7e3c0f46. 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/JPB622400775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb820145a97bb96b790bfd092f203af4ba7d3ce669bb04ba8c2c4098eb0a603e. 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/JPB622400776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fc8c598f190f12826618b32b8b348958637e24fe3c7accf2d4dd769fea078a. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JPB622400761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139449595270e5ab8be4971336919ef0c72465b42edb67758c05d7d788329078. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPB622400762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bdae7b21b9bebec8c7d5b76f2615f15001bc78b194e76995edcfc2af03a1b3. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/JPB622400763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec1bc1520309846bbd4142f0fce81e0e2426058c65b7ca82651a22d874c064d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JPB622400764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908c5f8a61b6ef73886dce63860ac465d000868f3edee3ad019cc0f60a5dd765. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/JPB622400765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d44526109f5e1d668b4e27464a2613e603862e803ab2f15300c6343709ce5c0. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/JPB622400767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd690d49c1d4d141fbead91b839b9b15a8ec88e4a607ec3cefbcaa00da68d1a9. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/JPB622400771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0fc9aee0cf679ed537f91cffa7d6da219d22e4cacb92b5ae4e51da8726b451. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPB622202971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc116002f28413c8b3ec07880484d59a997253b9cdf612f00d9a34e903418c9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPB622202972.