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 0x9a5cc7fa9806e0e5b6927ded7f6b05fc1b7b9f3c5eba7b6f845de57b73fa6815. 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/73f17700-861b-4563-b84c-a86ddacd4fe2.json and https://artists.proofprofile.net/proofs/artist/73f17700-861b-4563-b84c-a86ddacd4fe2.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 0x1389f72454277fd53b86279f27469dd74c7d61e99cb5206b6fb535d225e44168. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USL4Q2150163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f987d5402f52d65975ab857ad7bd153bb5e5b933c82f6099050a8765b8671bc. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/TCAGG2202172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655756375932390b0118eab36c722bc68280438805c5144c43d4bbecb46abee4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAGN2229738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fab2230d88e84992b02457018e6282e3cc4fc83941ad4e43bbe97b8e846515. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM24S2300637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a4edc41f50b9bf933758815616d985b9001bf52be191d39b78d4e92ed008e3. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/QM24S2300636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71af77fc9c891b30b9e36f26ffcecb44a0078cf3dccd00240ca1fd7bdececc3c. 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/QM24S2300635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21936f6b2d0c951cb4bf0d46402b1f36108e2958da529e5e17d9fb2c27543b21. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QM24S2300634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6eab0b41e888db1dff5354b1c2651ec5ef837856522d1499c21e7d5ae676f4e. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QM24S2300632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68471b4f02915eabe01d236af9afd10f44fa16ea43395da5685042a00200cfb8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM24S2300631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852b83246d2eb33cfa32d94c4e9585b92efd12b7cbb7d4a736f97505f76fca73. 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/QM24S2300630.
Till the Morning Comes (Live Acoustic) - EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec1933748fdad5c08c8b24ad48df2bfe00cc6087ae50078a331692c7db80906. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZWH32400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0e79b5ac51bc3a70c004847d86e2e7ad7ae27f0131813dda67ddc5ae50fb35. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZWH32500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c08df891f0e1741c3c897e2f628bf7e6193ffc9d59fe5f93f28361f1f54cb7c. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZWH32500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0e79b5ac51bc3a70c004847d86e2e7ad7ae27f0131813dda67ddc5ae50fb35. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWH32500060.