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 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
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.
Missa Mille regretz: IIa. Gloria in excelsis Deo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d703b01ef8025b5356e5572ff73cc835fa1729dcd21e1c6dc403ad3162ffeb. 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/GBAJY2341505.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460b112611ea4b11a6cd3bd62e1a076568cf5d0931b8700886f4bd76212b0002. 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/GBAJY2341512.
Missa Mille regretz: IVa. Sanctus (1535-7 Alternative Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b276ea270a27c4d7c92384ab7138d0ceeef4dc24858e7aa736e7078f51a498. 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/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 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/GBAJY2341521.
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 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/GBAJY2341525.
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: IIc. Qui sedes ad dexteram Patris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1a2c3bf3f372943b3c30424bfaccbd9b66b3ae18417a546c1e5d5400b40e8b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/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 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/GBAJY2341545.
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.
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 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: 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: 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 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: 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.
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.
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: 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.