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 0xf594b73b832479b14677fbff9362907bf8feb69f75d7c60496995a7efb687be7. 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/e144d295-7445-40cb-a0f9-321e9fa4c842.json and https://artists.proofprofile.net/proofs/artist/e144d295-7445-40cb-a0f9-321e9fa4c842.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oh, Come, All Ye Faithful (Arr. D. Forrest) [Live]
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 0xdeeb673900799f3175cf459bcbc6c64d3a57335208bff072d64cff5616022e90. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMRB31600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0b0f15d222260c26f53e27b15fb87f66323a2b641e266160389d133414af0f. 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/QMRB31600055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97309b66af5100b41bcc7e8bf3daab57213c7249ed5e6a72bc1ea5cda925b7c. 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/QMRB32300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff65228e84457adf83114d43b0062d1f9b88660963494d40eab130ee506d3973. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMRB32300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb47f8dbc296aa30c0db480355e4a5b2248dd8a0d3f86ab7300e928f4f995d1e. 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/QMRB32300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1bde47a3587ec12fa27d62cfff96ed1b7a894a614d8f47ee57e567e1d73e15. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMRB32300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8980d403ac378086f0900a20f3b07fe697652e46f9cc61d8d12c470e8d45134. 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/QMRB32300013.
Inexpressible wonder: No. 6, Ñeizr̃echénnoye chúdo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19a43f0b4137f5d25be1006d6fc73015345031959d9b7e8c86c8bef0d81df45. 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/QMRB32300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe800ebd6398abfeb2935c2e79255be7732956c3355910a570668ec081d1a29ca. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:52:57Z), 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/QMRB32300003.
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
Praise to the Lord, the Almighty (Arr. for Choir by CJ Madsen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fce2eb4fb380259f839a7dc201edaee354cef110d04a176fc9ec8d3b0ea5250. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMRB32300002.
The Place Where Lost Things Go (Arr. for Choir by G. Breeze) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e472be593a3400c8e40f9896ed95eb9025f215fe200a306b566ac3681e717dd. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMRB32300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c57d824a3f457c552b4e6377205d16b7e852385b49921686d3b11b6d817d27. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QMRB32300006.
Someday I'll Meet You Again (Arr. for Choir by M. Ijames)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc51ec6c4261895d8b36507a5d2e4ba9e8931a5911d3ae02f8d6dacbdb130bf. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/QMRB32300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a96baabf1f8cc838f4af8671fa32bcad814e56038522bed3953926d4ad2fc42. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QMRB32300011.
When You Wish Upon a Star (Arr. for Choir by K. Neufeld)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73dc32eeec59e4efab9575196f975e066b803fdc426eca90840652f5c3cfa99. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QMRB32300015.
The Lord Is My Light (Arr. for Choir by CJ Madsen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2526471cfa06354d4868b7b296179655b51f6aa5acc7a4e010e59b2ca686be. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QMRB32300016.
Press Forward: Singing Through a Pandemic
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98d8355ea957d7086df9236f3eec94ba7b3ff1ed572fa5d62f67e6d26da3928. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QMRB32100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8fbbf89ab3cb3f9a60f5afb72f3a558502c6534c2a130c09fd38bd5fde5717. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QMRB32100036.