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 0x9fa8d1e401bb20d37cf3912b01b89a1e55c7c3ded73cc6fca92d89b6fb217477. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a94a65e-defc-49c8-8a85-ef382501db78.json and https://artists.proofprofile.net/proofs/artist/5a94a65e-defc-49c8-8a85-ef382501db78.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sibelius, J.: Cantatas / Finlandia (Complete)
All-night Vigil, Op. 37, "Vespers": Bless the Lord, O my soul
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 0x8449782bc8ca1e5478625d425b83478f6aa8e2793046241a131c7699ae31e19d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKI190406902.
All-night Vigil, Op. 37, "Vespers": Come, let us worship
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca4c3626f6cc93d27288ce67fd99476525ab6a58853a246e21c6883089052a9. 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/HKI190406901.
All-night Vigil, Op. 37, "Vespers": Gladsome Light
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f960f4ded930cfa4f6a9dd9be073e6f923ea1b58a37a6811a933d744655366. 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/HKI190406904.
All-night Vigil, Op. 37, "Vespers": Canticle of Simeon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7db9083a5ccb2bf4f8f0db48f22834e4e37fbf39d65d6c3e158c52421c67ef. 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/HKI190406905.
All-night Vigil, Op. 37, "Vespers": Polyeleopsalm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7315279808e00f0809e9a816db9cf622071bf726e1850042db91d242a7d61df2. 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/HKI190406908.
All-night Vigil, Op. 37, "Vespers": Troparia of the Resurrection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acb0e8142639c0fd4a20b8fb35a787ced7fafffbcdb8cb81b2727cc80b3ce08. 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/HKI190406909.
All-night Vigil, Op. 37, "Vespers": Having beheld the Resurrection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b785d16145551402043baf02df02dd6a0b4b1f51dce9f004244ac38796ed8f. 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/HKI190406910.
All-night Vigil, Op. 37, "Vespers": Hymn of Thanksgiving to the Mother of God
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4516de5b7292ea18a6e627bd7062c107e6053a1d5ce081ea4284e1ebeec50d71. 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/HKI190406911.
All-night Vigil, Op. 37, "Vespers": Troparion of the Resurrection II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2157cdeff2bb38050c48fe90b6ebab6bbc0eb4c3c1bc0cfd5af673a8c7e72bbb. 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/HKI190406914.
All-night Vigil, Op. 37, "Vespers": Troparion for the Virgin Mary
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5019c2961340da739048424e72be11bd725e21ce5115a36d32425e75dffd8f. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/HKI190406906.
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
All-night Vigil, Op. 37, "Vespers": Blessed is the Man
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e51ed9b4ba15db70726772e22d7b5a099d58df457d44c6f080ba895e6ff3b5. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/HKI190406903.
All-night Vigil, Op. 37, "Vespers": Intonation to the Hexapsalm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e88949a4ffbd7fcfeb0d68181e50d08411e297a152f485f6b7fa2c1677d534. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKI190406907.
All-night Vigil, Op. 37, "Vespers": The Great Doxology
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9beb5670dba7780e1c10d1f28055ad40e490e28730075fa3988d212b045f36d2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/HKI190406912.
All-night Vigil, Op. 37, "Vespers": Troparion of the Resurrection I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf07ddcd9f4ab558c4439265620add6ff283877feb78bc331ba61f4f82015f6f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/HKI190406913.
All-night Vigil, Op. 37, "Vespers": Kontakion for the Annunciation of the Virgin Mary
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf4629721a83488f27740bd71d62012ec6c4d9642728c55273e18f38d2d4e72. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/HKI190406915.