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 0x324b9e01ba23f3c46bb1b57cc689f1d662c680b2c2c3283edc226afbae91a0c0. 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/0fbbbf4f-f9ec-486f-b1c3-2618e71e9ca4.json and https://artists.proofprofile.net/proofs/artist/0fbbbf4f-f9ec-486f-b1c3-2618e71e9ca4.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 0x85014fe904cdb988a85aae31c21cb9a1b3716f6c992e09192914eac981f1cbdc. 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/US83Z2232452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95d71f50367842636b8cb10babd5838144f20a133493d31df7abafb3859f048. 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/HUC251600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18fb77a5a7be4f96a2892e5c79dbb4c4dc181e54232ad0b793765878ac9f95b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HUC251600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1626ef08069dee28ebf6788eb92f46fc06c7b00b27277052225181bc0b0808f1. 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/HUA220700094.
The Voice of Angels / Spiritual Experience
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea04287bc37148cadc25de9aa9ef4ddd294f465621b464f22290bcc60dcaf15. 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/US83Z2330848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2f9a011ea335d1ede2b77a8f4922d18bf4ec32922cdf72bffca8e81bdd17ec. 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/US83Z2319359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c7d10b947178ca619084daf3d512e6f8fe262c91339a301db2f0e08abbf2fd. 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/US83Z2302586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb96a562069e3b74a55212c9048bb70270f2b54a2153c0ca83c73d97c1eb4c83. 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/GBKQU2296576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cad46e5a6bc44035dfa972c792de08e6ba60f36ba5b6aa8f92c00f654683f26. 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/UKU932232308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afdc5393530cd5e93c1d4ab006d69ba5b88d5194909c793a17eae68d3833ac6. 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/US83Z2226990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b76cdd18359547fe4f5671b0a35dd683ac878894f60ec42a33d713ef8525d28. 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/US83Z2210354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea35244ea108d9f4deeecd8bc469b02b65015b06a4d768ea358735a5e833bc2. 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/US83Z2210355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175c12313d3c60d2a4091fa7f1b09d629f6a06b63018c27fea5d567ca48af6e5. 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/US83Z2202184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c8638801b78e4a38e075cb80a88b140f80cef12e8eb431d1bfd7a3bcdc311e. 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/UKR6V2182749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97017c154688446d6c87f1b7cd7ca0c3761fdc6d3f277cbb034112885766a296. 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/US83Z2136388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f66b51a5a4ec32b5309ea5e12ff2818599c007ccaeee6e62ae8607476136ba. 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/US83Z2136390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae72bcbd206bf8bb33bf6b86ac50108ba3d606e2a4a0ad2c981382a4802f62f0. 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/UKR6V2076161.