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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6fd562d5ac51d479874aeb231697f7f6c076a3119f25da4086e6312037322e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a72cd47e-0d67-4d1f-b1fb-b4d0488b8816.json and https://artists.proofprofile.net/proofs/artist/a72cd47e-0d67-4d1f-b1fb-b4d0488b8816.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4984f6dd3c3bcbdd40ec7d09d4e165fa4fa6d9227900eabf4f785384daa855cc. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZES71904282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30618253e27411122eac02e8782396fea4fce7e88064d21e4d0bd07b12f20bb8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/US23M2100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbc548f84a57d74f6f0e4b3bd0e747fc774760315b2e6dd9a20e704ad0bee92. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US23M2100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd5c37a25518afba81b4a0614574539e6b48d2ffd08a76f922a43fa724e7a30. 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/US23M2100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8080a339fb9d88b2b7627c830ce9256dde61b69909e0c82ba6bf3b7e5f93682b. 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/US23M2201000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ecfc33ce7d0e7186ea3218d687027e71d7e7a2faeadb169b2dee7b9664bde8. 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/US23M2201001.
Keep the Commandments / How Gentle God's Commands
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e0c5cebab09827f69d448804670ade62717f839bb4fe3ca4fdc866c5bd61fe. 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/US23M2201002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f981a22a779e3a3c7fc7ca2b6b8173b31b0cbc4868438a8e9e0fb99642755f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US23M2201003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38b0f06ff1451372776dd0644b8e8244cde84c3e326343383c5cffe1eae7a8c. 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/US23M2201004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6813a28dea86ab9f2bdcba80b1d16dfe592d662aca095c57ba9125b9f5c8c026. 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/US23M2201005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c3393b468b661783a6da57e29e0a4f5ddd7d5e48451446da5dd9694d6a8188. 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/US23M2201006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd9b487f24336f1727026ed2e1ee75b2e8976712b8df98aa118838849bbb908. 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/US23M2201007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc24f31f213bf1bae2e5f88f2fac9ff8842a0a39d7537fc0195b723af450ff70. 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/US23M2201008.
'Oku 'Ofa 'Ae Tauhi (Dear To The Heart of the Shepherd) / Fakaha Ehe Otua
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f3b4f2adcf86368ed61dcc0a5a6b68a0eeda884419c8c342e38fd5235a9ebe. 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/US23M2201009.
Families Can Be Together Forever/ I Love to See the Temple
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0459afd1a58a5db9d12fcde761d842fdb49bb16d334e4a63bc001c606b5123ee. 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/US23M2201010.
Sweet Hour of Prayer/ Did You Think to Pray?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a6c8d7cb5762e6d14e961f2aad14a07ea2b490ccfe474440f81e669aa82100. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/US23M2201011.