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 0x769dae88815f1e61e3c7d928dac23a2a4d16afb87fb9393d914ee4830145943c. 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/b12dab25-100c-4c9c-a25f-5bb59f3edd35.json and https://artists.proofprofile.net/proofs/artist/b12dab25-100c-4c9c-a25f-5bb59f3edd35.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 0x5f70022a1f6419ee09edb70f068629b4bc00d2bdea5413a41774681c4582c6d4. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZ4JJ1635977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12bb3e4b6085891e686d741e081c21e8f3b1cfe676db04aae252c5f4390a3dc. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM4DW1864388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d0cae1f080d3c3557212cdfabd6115384c074ff2b8f469396c3f60b171d9d1. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZFZ62077622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d9fad1a6b56dd6b24ea3c822baf0d2ce26bc2f54a04284cad0f110b82d7e6a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:17:11Z), 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/QZFZ21912729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac09bb8efb957379a9edf596bd4c2777c65202a348c8a12f25c3cdf260675a9. 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/QZK6H2000941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b379b355bd8352c69baba1bb565bc8833276b18241829c689ed0eb7f526bfd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZCE61893588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc3914044cf9f8137a59f0957422798bf4fa55681c99e8ac10c57e0218636e9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN52017811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d10f7e3a9fd0bced158e2815f1fec0d5d7c1aa30e6ae9e6be7ac6eb67b6dd77. 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/QZFYX2164851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62289b68315903ac7ccc49fc1bb855ec6b36a15777e0dfe912747b743075e448. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZANL1750350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a085d62c3199f2ae7936113c0362d506036ce4071d2e26c0badbf1a946e022. 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/QZFZ62077626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12bb3e4b6085891e686d741e081c21e8f3b1cfe676db04aae252c5f4390a3dc. 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/QM4DW1864388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d0cae1f080d3c3557212cdfabd6115384c074ff2b8f469396c3f60b171d9d1. 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/QZFZ62077622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f70022a1f6419ee09edb70f068629b4bc00d2bdea5413a41774681c4582c6d4. 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/QZ4JJ1635977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5461dd17b195d6a80bcd52d1a8a69b582a2eafbcad80cd744cb4838c41a95d78. 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/QZ4JJ1635975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff94022e2feec0a619117b68af50bebad10611381504e7255e1c62eb7924e4d0. 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/QZMEM2136720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6319c35e11b809d4442e23d4f900706f2a076ecfeeef0dde9387f48636515ec9. 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/QZFZ42294901.
R.I.P. (Replenishing Inspiration Proper)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9065d87bbba81d8d69fe5e74a3ae05e4550dc0ec75d5884b14bfe22317f1f6a. 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/QZNWU2211557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e245dd1034854e0b26e961ac0e900bc8f95c5b700ffefa4b607d48ed7d9e2f2. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:35:41Z), 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/QZDA42394183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af6da039090868787851cfb8397c3ddd0a2aca1f6201642cd8334cfa0a243ba. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZWDD2434600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c1955fc8b27bc34be3720dbd6c1b7e3d685b3c44dbeffff90e8d860fbc88f3. 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/QZWDD2455253.