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 0x3c5cd0d98448699baf0260e99aa34b474f69c272b742b9e524912d5c1ea5b779. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdd268a6-11da-4a39-b8c5-892573e7a46e.json and https://artists.proofprofile.net/proofs/artist/cdd268a6-11da-4a39-b8c5-892573e7a46e.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 0xd1182c860424f4d7c1cae7be6653d5817e29c5dce216978a156aa906286534e5. 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/FRU622372404.
Ack Lova Gud (Arr. for Vocal Ensemble by Manon Cousin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae3ed4c08af526471c177313da2c35c67ce4b95d46460c125a1e0c46539e398. 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/FRU622372405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1107f9942f3757a86914b495941ca5695ef0a68324ce8caa8bc8752ef24a411c. 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/FRU622372408.
La Fille aux cheveux de lin (Arr. for Vocal Ensemble by Pauline Langlois de Swarte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfe525c7d9dc47c7528ae10f9cae700974b44b4f999401dabcd1add685026e2. 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/FRU622372413.
Voyages d'hiver (Noëls du monde a cappella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658d652df411bdd30c22606eba5488e1b2538018d368c29167f943707dd024e0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRZDG2101519.
Ice Dance - From "Edward's Scissorhands"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16cc69ddbff1cde4b7af856d5fc5e9873a8753fb9947aa3086ef81143918e77. 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/FRZDG2101523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd407fadada9d1201bf077ccea56cce3d2d82d65f0b85cd54a4e5f435ee5a5953. 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/GBMJG2004595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2ca438f3060aa927c0839a374648ed0da1af13505696bc550ea2ab7e27aa48. 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/GBMJG2004600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e49cef7c65b3613cdae72ac513353407d026ed77a5a5a63d160642cd61f9f7. 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/GBMJG2004601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb698a7a324651873d7f29a3050e67a4ccc069c53024ead0c6892377e46d73d. 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/GBMJG2004602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8965040ba502b2922e5b1c4d031276a68f5c272f028a66010ca76a26ff5a16a. 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/GBMJG2004604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb642c771be9019ef29638a93407e8c340101a34f78ae53bdf7947de77cbb0a09. 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/GBMJG2004605.
Natus Est, Quem Pastores, Huius Sit Memoria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49141f828bbe77d084e39affa6d6197d6ec1bbe860ae5dd985e96f78f4318227. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBMJG2004606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d85c6b2f63b013afd7d3859e3d35e8678ee6286fbf902db31ea1a34d19b793e. 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/GBMJG2004607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c66071b6456b57ff2e8896a296cbfb245e52d38b040789dcdf54d0c6882ffc. 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/GBMJG2004608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53874228a276384231b187b105b2df51c3e4d7b2f45986010d01a3ba22c8764b. 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/GBMJG2004609.
Waulking Song (Arr. for Vocal Ensemble by Pauline Langlois de Swarte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1182c860424f4d7c1cae7be6653d5817e29c5dce216978a156aa906286534e5. 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/FRU622372404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdfe916c626def3835869a474271983323d17dd7652401cb8155e7fb0a8c99e. 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/CAT4V2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc20f91a083c987c6664fc44bfbb4965e76cf303e78e6e44b456279ea64ab02. 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/CAT4V2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c476d33b02bbb6dc8a160da06b0200cc8715dd984d581d690fee3a1ebf865e. 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/CAT4V2100004.