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 0x72d68ae152744ccf1472de433c0a7264133c5f3a4cf96a4af0db3d36b8f4866f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85faa03a-83f2-4f69-9af3-84f2460ae1b0.json and https://artists.proofprofile.net/proofs/artist/85faa03a-83f2-4f69-9af3-84f2460ae1b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Claudio Monteverdi: Vespro di Natale / Christmas Vespers
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 0x59e50637213b0685d0d2c5e747c8489538d14d67537d467bb1fbf2331a5fbaca. 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/DEN962232705.
Compositioni armoniche, Op. 3: Sonata a 8 con quattro soprani
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd988b6805276a51808198227cb8948701ec3564778c2c375665c79d3869d2d76. 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/DEN962232707.
Selva morale e spirituale: Psalm 111: Beatus vir I, SV 268
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0d8395aab4ce491e15cc54573eae0b7df5ee01dd4c2bfdb8a0a04c4308a507. 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/DEN962232709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482ad8ffab040bf86f1dbd32f8779ff2d1fe4cb6a2ed4ca2d6546da32fd790a6. 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/DEN962232710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd2e9815d626c578190d8b0570c4c244535d271e17c85cd8a4119fd289fd9c2. 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/DEN962232711.
Selva morale e spirituale, SV 280: Hymnus: Christe redemptor omnium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422a1480dea3a818b3421d51cc53cd46e2d5625e6a4fd6028bbd37504cf134ef. 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/DEN962232717.
Stradella: Ester, liberatrice del popolo ebreo
Vulnerasti cor meum. Motets from the Song of Songs
Colonna: Caro ardore, sacro amore (Live)
Adeste fideles (O Come, All Ye Faithful)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d8a8501d47a2d0830d413058dd562316656643cb49c8851f575eac54ec3336. 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/DEF059105110.
Gloria in Excelsis Deo: Gloria in excelsis Deo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979a196512f53f0abed98e1cdb954683c01c18621e20e3f7e5e202a7cd8db977. 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/GBBBB2010301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf58957986c70d7533740665c85f5b22c8595b499ddc106e1c2da381cf5d21f. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBBBB2010302.
Gloria in Excelsis Deo: Laudamus te...gratius agimus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ab7f1cc68839b4e7b3d157dfd1d35b1627ab4d73f2f70be7ba9b9cb449fd65. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBBBB2010303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa80a93b20222a69a038a755928febd17f758d2a4f5fa8f7e31c869363012d24. 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/GBBBB2010304.
Gloria in Excelsis Deo: Qui tollis peccata mundi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff38c90b3ec6055f2db5d2f1204de2901b706f0788f25d7fef81530c67e0e04f. 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/GBBBB2010305.
Gloria in Excelsis Deo: Quoniam...cum Sancto Spiritu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d119e92d2ff4eb3d70876d4f6f5dfa7860b65e382bd011dba3984e69572cd9. 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/GBBBB2010306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e50637213b0685d0d2c5e747c8489538d14d67537d467bb1fbf2331a5fbaca. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEN962232705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf602dcf492c1537852e9a311eb8c5da87fa427e84dce33821d6b53b6877ac005. 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/GBBBB9810212.
Dixit Dominus, HWV 232: Virgam virtutis tuae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db9e948f6f5d9d8bdf344eb1253c6015de662f30248e0e9f238a6b6eaf2efa2. 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/GBBBB9810213.
Dixit Dominus, HWV 232: Tecum principium in die virtutis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542f0ffff06fa5775831ace49e6d25287a528e281a6396ebd797815825477b3b. 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/GBBBB9810214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba85503c5cdcf05f31dae05ef9bb2fd022fe50979841f60e2e3c85232f3b704. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBBBB9810215.
Dixit Dominus, HWV 232: Tu es sacerdos in aeternum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc443512d5cfdcb72b406f6d46edcc2ed28cf420518c0b48c9a8ccc545a39de9. 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/GBBBB9810216.
Dixit Dominus, HWV 232: Dominus a dextris tuis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357b1e4b2a666752a6fe416a0e15efd2e8ff2d5e3b71dacad3ac052068e4aeb3. 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/GBBBB9810217.
Dixit Dominus, HWV 232: Judicabit in nationibus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa881ea66899b2261c682ba8dfbe3703374ad8ee5b9ee6027230301e726c79e4. 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/GBBBB9810218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59a33147590b060951117c86ced52d0aee7aaaacf3c707ca19198fd8a1e7067. 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/GBBBB9810219.
Dixit Dominus, HWV 232: Die Torrente in via bibet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d6b6130bb2923e4f44dd53a35540bcec3842c76288bfae9fdd899940f7ce69. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBBB9810220.
Dixit Dominus, HWV 232: Gloria Patri, et Filio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015bae79c7d43434fed1c3f55e356333f09e7c8a3b6d270eda411ee9f9df4023. 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/GBBBB9810221.
Melani: L'empio punito (Excerpts) [Live]
Banchieri: Festino nella sera del giovedì grasso, Op. 18