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 0x1276ffead94318ea1216396d3bed3265215d34d0df5286687b45c55706899eea. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75b1945e-ee78-4c97-b58d-25ee899b8a88.json and https://artists.proofprofile.net/proofs/artist/75b1945e-ee78-4c97-b58d-25ee899b8a88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Transitorium (Ambros.): Hodie Caelesti Sponso
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 0xdd948c083db4dc90277ed561ac30c73320c06c9bb30ab5a92eaf0a8e17eb66db. 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/DEC628300927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda67841a09b6a1334804285907317ad86351a1e6ebe84f73d78fbcfbc225912c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEC628300936.
Hallelujah (Ambros.): Puer Natus Est Nobis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5040a0c2330f5bc2fef3890e9a8c07b472f97915b04f370efffeabef3aff47. 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/DEC628300937.
Communio Mit Psalm 71 (V.1-3, 7): Vidimus Stellam Eius
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec865696b8ba325803d6e60b316e1ff4f4d0a72d9613284b66eb5a5246b51fc7. 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/DEC628300940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2a68dd88b1cc233e4e661913305ef11c58be334629a2357f21920e5914466f. 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/DEC628300944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52ce54443b1de5dd221f846dd4809768b309d75de292d7f73773d0c2305c7f2. 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/DEC628300947.
Prolog: Lectio Isaiae Prophetae (60, 1-6)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cbb787de8fb6bc404fa3260e8399c3c6a8ad9809b030c0eeed357b576d6ef6. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/DEC628300925.
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
Magnificat-Antiphon (Greg.): Tribus Miraculis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63885c24eac03aebf75b4a93f5bd34761a7f3ae9af26784f172b785502ce89ea. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEC628300926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2511cbe913fc9d0f51b783f0c9ff8d196bcf3e85dede7a4b2c785f6a89897777. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEC628300928.
Antiphon (Greg.): Hodie Nobis Beata Illuxit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c0eba8abf4d2c5314d5532f3c0d5aa1fcedacf1328195a1d4db5c36d7e777d. 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/DEC628300929.
Responsorium Prolixum (Greg.): Illuminare Ierusalem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d74804e1732e4ecf02a7e3d408338979f61d5aec04dcfc97dd74092452293f. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DEC628300930.
Antiphon Mit Psalm 71 (V.10-13, 18f): Stella Ista
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d8e88ac7f6523ae65fd31684b8328ddcf560e720db4f8fa977e2932110cd70. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEC628300931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63288f5b975e47ddaca167e3e7b885acd719b85d731ef0188332dda35c0dd3ed. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEC628300932.
Ingressa (Ambros.): Civitas Non Eget Sole
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76d9e737a012c2020337554cc9c8877a81e34e7d40d2ab76ddb8f86a5efa3a2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEC628300933.
Gloria Im Tonus Festivus (Ambros.): Gloria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1715881d53cee8b8f272eb9cf277e538df79cd15b1391cbdf10457c4384222. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEC628300934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf589b387772e8cb30f966dc37c4aadaddc652efcd45b3bf04828bc6879a26e8. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEC628300935.
Symbolum (Ambros.): Credimus In Unum Deum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549aba07bf33a3d1cbe2a263e496eb9573d430d2070bc2735f128a44b917cbec. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEC628300938.
Responsorium Breve (Greg.): Omnes De Saba Venient
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cddde4d2649b0f6fd894d72dc2877c9466797fa870fe48b4bc0c1bb165fbb5a. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/DEC628300941.
Transitorium (Ambros.): Te Laudamus Domine Omnipotens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6cca3108308ffa974343fb80f637dc8f8729f26e4771bc3be15efd10d3c8a2. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEC628300948.