De profundis refers to Psalm 130 (129 in the Vulgate), traditionally known as the De profundis ("Out of the depths") from its opening words in Latin. De profundis may also refer to: Films De Profun
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dbbd6b4bb69ccbc139f2fdf6ee359a99bfbbb0ad20c318972258c4b580362d. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb5fedb2-de43-477b-a3be-f1a5ac291aad.json and https://artists.proofprofile.net/proofs/artist/eb5fedb2-de43-477b-a3be-f1a5ac291aad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Morales: Missa Mille regretz & Missa Desilde al cavallero
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb32098c4a6fbf9e494bfce0bee10aca35206bbbf8a413c70417a80fc7060721. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/GBAJY2341501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb62dccd87cfd5af510b9f74390d360b215559e293e871639d4a818b254cd165. 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/GBAJY2341502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e53573868ec07e45a21c25dd9aa660ad39fe174405065b3d2ef81382a33c0d. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBAJY2341503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48879f39585fd4b0a3dc36ccf86fc9047cbd3d5e3435ff9e5f4f062b0a9af6f. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/GBAJY2341504.
Missa Mille regretz: IIa. Gloria in excelsis Deo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d703b01ef8025b5356e5572ff73cc835fa1729dcd21e1c6dc403ad3162ffeb. 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/GBAJY2341505.
Missa Mille regretz: IIb. Qui tollis peccata mundi, miserere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa228a4e7a563797bd40b84b88873dccbb4b47eb83a45ab0c161da9f83ad84d04. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBAJY2341506.
Missa Mille regretz: IIIa. Credo in unum Deum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38780878e726abedb73d09184d894963bc86c743025d5da01eb389d8850e6517. 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/GBAJY2341507.
Missa Mille regretz: IIIb. Et incarnatus est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb600b1783ca17790ac7d34981c6cbf9db1976695064e8a73daa8ec3ba62d283d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBAJY2341508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9aebcd9a540489b4534161bce91fefb4cc289b7f295226a8ada1660bc73e55. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBAJY2341509.
Missa Mille regretz: IIId. Et iterum venturus est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b237d77269f11468ea3b88b5ba05472fd1b6455de0f90050ac50b1457713ec. 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/GBAJY2341510.
Missa Mille regretz: IIIe. Et in Spiritum Sanctum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaa22dba394751884941b87acff033323b9f6c62689837fb808bf9e90518756. 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/GBAJY2341511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460b112611ea4b11a6cd3bd62e1a076568cf5d0931b8700886f4bd76212b0002. 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/GBAJY2341512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1663b86947d0c6f985d3728b13c808fbeef7de4cb33a53e318db3b673dd828d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBAJY2341513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc991e5ccdf2ed4f7721f6b9d4b0a18e36ccea661b24101b4bbe96fe93a2d49cc. 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/GBAJY2341514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6c369d637863fb5e7cf57adff163b1543dc35794ba5e955b49193e00502935. 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/GBAJY2341515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749948f8856ed17eb4fe9050fcbc19d38122f715bf5803b96baa15116fca500e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBAJY2341517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c5f72e3360d184e4b8766b1b81974925549363136b37f8eaf960491e8d3fd1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBAJY2341518.
Missa Mille regretz: IVa. Sanctus (1535-7 Alternative Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b276ea270a27c4d7c92384ab7138d0ceeef4dc24858e7aa736e7078f51a498. 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/GBAJY2341519.
Missa Mille regretz: IVc. Osanna I (1535-7 Alternative Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676190410b786c3f194f349a6430253c444422f3112d83d90e2afc5044060ba8. 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/GBAJY2341521.
Missa Mille regretz: Va. Benedictus (1535-7 Alternative Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4bd08b7ce76fe90f39fe41a5b8e321f5495fd36766a4e3c1d4279f300f51aa. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/GBAJY2341522.
Missa Mille regretz: Vb. Osanna II (1535-7 Alternative Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886ff98b53949e720834abcf0d49d0dba97d54c1fe4be0bfa42638d4c7a5793a. 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/GBAJY2341523.
Missa Mille regretz: VIa. Agnus Dei I (1535-7 Alternative Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd563d7d1756ba7b776bc7aad38831f743cc4e3c69f99ad08d899f50e2851ee43. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBAJY2341524.
Missa Mille regretz: VIb. Agnus Dei III (1535-7 Alternative Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352bc39abf3ec6abaf44d6fd0428a35be2e0e21a40bed457190e53636d886e47. 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/GBAJY2341525.
Magnificat primi toni: I. Magnificat anima mea Dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51376d7a1a2986d8fa3cb2144326b14814d7e89d14ec63df2efdb12d4828d82. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/GBAJY2341526.
Magnificat primi toni: VII. Esurientes implevit bonis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bae018d49d85a6d5da35c5acde01dba05e7f4f780d7e75fccb98bc9be247f0. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBAJY2341532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89bc2998f60e52ba6b50cf56ddc7ff989290f5593c9993f0aa75909c8992342. 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/GBAJY2341540.
Missa Desilde al cavallero: IIa. Gloria in excelsis Deo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01540cc1707e5a1f2e303640972b067e33aeaf758cf8e02c0c3305fa78abc9fe. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/GBAJY2341542.
Missa Desilde al cavallero: IIb. Qui tollis peccata mundi, miserere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340827061319ddff06a4d21acee3eb19cffb5f8663e66c4ea1a83d23104b7caa. 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/GBAJY2341543.
Missa Desilde al cavallero: IIc. Qui sedes ad dexteram Patris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1a2c3bf3f372943b3c30424bfaccbd9b66b3ae18417a546c1e5d5400b40e8b. 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/GBAJY2341544.
Missa Desilde al cavallero: IIIa. Credo in unum Deum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542c7cb0f2f740c3c7844ed7b7e95bba38baebcd7d7ad8a4c8ee4a3045f541f9. 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/GBAJY2341545.
Missa Desilde al cavallero: IIIb. Qui propter nos homines
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c55bee831eb648420f1bd98e17b040594407dd5e18debe3d439545efff01f8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBAJY2341546.
Missa Desilde al cavallero: IIId. Crucifixus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc7a8524f13239c2d9d0915b8799c84f2920903f8992b018146ec21558b585a. 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/GBAJY2341548.
Missa Desilde al cavallero: IVa. Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed67b20eade150c41af4e185752c964568465d97982ecaa39c98f65cd6dc507. 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/GBAJY2341550.