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 0xd598f3342f612730cfea1794205ebba5763f6ac70ec77936191518f926d660bf. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3782ea08-dd71-45c6-a3f6-937e78e93952.json and https://artists.proofprofile.net/proofs/artist/3782ea08-dd71-45c6-a3f6-937e78e93952.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music for Anne Boleyn: Court Music from Her Rise and Reign
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 0x88e717643c5658403e292a6c5542780a2c829ca7ed9a6f384bc44046c37b14f9. 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/USHM80949668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd984fb80dc4d591e266a07627dcdf123dd4a88a1f72172e6c3f58a6213867168. 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/DELC31204005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8db3341126ce6dea84c6b860c81b9fc72161aecffb03c14a696af00ae1df35. 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/CH6541631180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a8a125b9a26e0b0658c185e1115a0b0e3a1fe24639c824d581183e6947a0a1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NOFKF5834050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bd87d3711492c7a34181bf4c9a4b131185a0ff0ac3fc2b0926f86d4d0f8ea4. 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/USKC60713558.
Doulce Mémoire: Musique Sacrée/Musique Profane
Pierre Attaingnant, imprimeur du Roy: Chansons nouvelles et danceries
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49af471f061cb9d9147e78ac0f8f895e81e0cda46a3e1aa3b8626611f98360a0. 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/FR10S1726103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c35db75e5596bc8cd384b70d134fcd0687369375592a4d22aea66a99c5c505. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S1726108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212592b3e9af8d414d6cc82ba0e99607878c80eedfdd2e4a3f658f747ce8dc7c. 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/FR10S1726110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b9ca2d7e8dab6b109a9a2fdbb242bcfd1543c386392d6aad0a30837133af3d. 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/FR10S1726112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ae1b7b0bdbf8e8666ac5ca9a9278d5e8ad240d9c9bd4a55695662eda56485c. 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/FR10S1726114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0399cd52724133ee42240624f295cc5fa8bb617308a3ce854b20de0a8cdbc7ce. 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/FR10S1726124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d0f1c26ba001bb3012e0326a0ccc8d16d3b0b5fc1ce6cbbc1ad72b566cd87e. 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/FR10S1726125.
Je file quand Dieu my donne, Chanson - Bransle gay - 1545, 1550
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa061902feba1c8929b8f2606a4029f391e6cfa247edfbcefeb2e7746d16e8254. 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/FR10S1726126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f88bbf2ae648ef09cf06dace205276019973162744ad20ced486b9ad3374026. 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/FR10S1726129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a3e6222e9fe6f23d6e016f58830d9307bd8cb041fe3236d5ddbf78e7c43986. 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/FR10S1726130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6943897277a5bf6fdc4a3da6b2c0e4fe0bb4386c517c2db1bcdcb8c8f9c436d. 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/FR10S1726131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6a65b24373a91f1ec3dd93917f8d9460df14e04c94687229cc916fcb36d581. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FR10S1726104.
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 0x1a033eac2b4f083cc40fddbdaaae2bdb3015a2b1dc31a661941d0b8eaea7d3f9. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/FR10S1726105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212dfc2b59cc9987f346117b55d689e910e0eefb6ce057e1671a2bfbff3300a1. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR10S1726106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd243e833bb5dcb24c0d300db910a9a5f2f9f5701f68c9b43bb977c7b34d36897. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/FR10S1726107.
Mary, je songay, Chanson - Branle - Tourdion - 1532
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2d47db1f27a99409838d7773467c2aef3ab33521ee42c771c19d94cd109f54. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR10S1726109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf760b5ff25b1665a41f09a3e114a898f8f1b789f2f3d797f3937dac1a4a3ac92. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR10S1726111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e9665c78394458b4a90c7141ca34fab3957c36b543c937956ba6a9d2057465. 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/FR10S1726113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440bbe368ae63a41a35062e05e89f89a676cda5b9e6bc0615ba5b61dfb5acef8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FR10S1726115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c30f8c1f558d353cdf0d5c885d141f7bbac744760c9ad2a1b1014e2eb76e82. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FR10S1726116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf77a63afd945c76d9b90b5d994b4ce2e26b98a219c58e1abc492686b4b55b7. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR10S1726117.
Vous qui souhaitez: No. 1, Pavane - 1550
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b7aa25ecffe96113477ee31bb000ad64f04da916eda5e74b98d0b375c07092. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FR10S1726118.
Vous qui souhaitez: No. 2, Chanson - 1549
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda58f6b141a8c7ef54080cacfa5c72ed77e734af1b4e2289c1de18aa83f97c13. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/FR10S1726119.
Vous qui souhaitez: No. 3, Gaillarde - 1550
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3056f468ee77ff5d49bbd149bc8ca38f433eeb7298f039682b3086657dd3eeb8. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FR10S1726120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a69eb427b257df69de215f4a052e71c59a47d7eb32e8f4262702910c515b8b. 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/FR10S1726121.
Vous qui voulez: No. 2, Pavane - Gaillarde - 1550
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcf0918f085436eaf2b1f155f8f704a9b36ba508a571c4a0f7f92c2de272d97. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR10S1726122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae293f3a07c7fb6ffe97ef7c340590591f52f624f6f2918f65eba2fe8836b7c7. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR10S1726123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd665aed8df7713abbb4ff15e2aa5942f35d67564dfae821a90b95c0f09a8124. 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/FR10S1726127.
Le printemps: I. Revecy venir du Printans
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b91cd344342682ab04a8755131758748b0c7b631963702ca942680f2f225ab. 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/FR4LA1702201.
Requiem des rois de France: Les Meslanges (Deluxe Edition)
Eustache Du Caurroy (Requiem Des Rois de France)