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 0x6357442df7e49bf86863cde1f5f71938cec3ccc9e671c587ce80332d39b3920a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b68abb9f-5021-44d1-8106-469b6cf68630.json and https://artists.proofprofile.net/proofs/artist/b68abb9f-5021-44d1-8106-469b6cf68630.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x391e755941bbca8b90af9e32194f3507c61aa85af536b27f0274103513a9f5b0. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:55:12Z), 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/ITY870800071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1a934811ee0fa0f8c16fe1887c8352e35844b44765ddb54d2e8bac59f5a343. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ITY870800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34643c28ab931fe825dcc566e2962f1ac7f4aaeef9798f903f7e2ed67aa06041. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ITY870800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e1ae2a89d28a1067b5c21e86e0e1b882aee3686ded3762251eddd4da37e225. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:00:49Z), 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/ITY870800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004cb25f25cb64694d593d7b7499746431e37a7985c65ebd1f50526c2f956d7b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ITY870800076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ad95b86152860dbfaf0980d25adeaf7eadb85e28a3ca294620b099403e4483. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ITY870800077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c1fb24a38d20027768c08561f6979cd994737beef35a913aa46531f10844c4. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:40:46Z), 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/ITY870800082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f8f2d290fc59426faad65bc187ce35c1d8e08943b565713b2e02ae293b8321. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ITY870800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13c799507e8db93911e37f111e9274ae4dc65c676ca0f5249e0590765653dca. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITY870800089.
In simplicitate cordis (Canto gregoriano)
Adventus Domini - Domeniche E Ultime Ferie Di Avvento: Ad Te Levavi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9516cff25abaf8aae79fe0e72d8b4def7c2cc478b32ba8358a91a1d01da288c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SEWDL0554902.
Adventus Domini - Domeniche E Ultime Ferie Di Avvento: Universi Qui Te Exspectant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45d373ee69fef5277ab186d356b93c9676f80f6f37b85fa7ccfd11a720f7f9c. 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/SEWDL0554903.
Adventus Domini - Domeniche E Ultime Ferie Di Avvento: Populus Sion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b21fcbe9cd58ae38b37c8dabe0a186b1461433e138d547d0d84fa91a36ef8f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SEWDL0554907.
Adventus Domini - Domeniche E Ultime Ferie Di Avvento: Gaudete In Domino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13d172a1886fdc152b78345610daede9caa07f0a8a7efdbd52eb24fc21c55ba. 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/SEWDL0554910.
Adventus Domini - Domeniche E Ultime Ferie Di Avvento: Qui Sedes, Domine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cc3ce4e5e9f0d40bddba38cc17fc0982e2c3de43a230cb67ad43ea6d9547fe. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SEWDL0554911.
Adventus Domini - Domeniche E Ultime Ferie Di Avvento: O Sapientia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65072c49d318a515f6ba261ce46280ffb534a1d670337471150473b22f518ada. 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/SEWDL0554914.
Surrexit Dominus - Tempo Pasquale: Ad Cenam Agni Providi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c74d55603d465eddd7ec192395bcc7783464903db87592b48570fb1563dbdb. 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/SEWDL0555601.
Surrexit Dominus - Tempo Pasquale: Iubilate Deo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e88682f2146a6e1a09efcc54c30e7266c7579f5a744ddbe6dd6d3708570458. 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/SEWDL0555606.
Surrexit Dominus - Tempo Pasquale: Cantate Domino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8defb713f5e0241e40547ecaf3ceffa80d2331ab983928a6f1da6500f62b8fbc. 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/SEWDL0555607.
Surrexit Dominus - Tempo Pasquale: Vocem Iucanditatis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575edd063cf862bb9534305e233a720268fa325251a7e2acf118d553aaabc1ce. 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/SEWDL0555610.
Surrexit Dominus - Tempo Pasquale: Modicum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39495d5d90caaec129c7980f9afb0617337c029f1a3b50dcd96b46d5181f8f72. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/SEWDL0555611.
Surrexit Dominus - Tempo Pasquale: Alleluia. Dominus In Sina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a06cc5a85f2ec79c4244ab739ed47f1091267f9441fb4d1090a82420a45d847. 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/SEWDL0555614.
Surrexit Dominus - Tempo Pasquale: Rex Omnipotens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c893fc4e2a074b973d6df33f0eaf0a053e8ef8c46b4fc1569a3f86526cdbffa. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/SEWDL0555615.
Surrexit Dominus - Tempo Pasquale: Psallite Domino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784f8746bf54b660ea9e714b0854461c5955f03684e981db759873e8a431a009. 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/SEWDL0555617.
Surrexit Dominus - Tempo Pasquale: Omnes Gentes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8152225f9508de2d5981a62151e7a3b2aaba377c7314422bff2f168a10148bf4. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/SEWDL0555618.