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 0x49cc30e066f0d9a22c4ed8f2b25f8e1df2aa4222dbb297255f291a48750506a5. 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/851808f4-c6dc-4499-a787-f4387fa42855.json and https://artists.proofprofile.net/proofs/artist/851808f4-c6dc-4499-a787-f4387fa42855.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musique celtique: Envie de Bretagne, Vol. 1
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 0x9e35e64720302fb816211923db1202c1cfc5fb90caae155b6655e455a638b281. 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/FRX611400108.
Fest vraz, vol. 2 (Musiques bretonnes) [Celtic Music Keltia Musique]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac36b95f7a6b021089738b51341e62505b109d15aac02ce9dd3c724952df6006. 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/FRY471462913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958b7973bea7aa05b0f6d9ff081ced60902cba8ea07a740ba518c7f09bee208d. 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/FRX611800190.
Distro deus an douren (Bal plinn) - Suite plinn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fbd1feea6088c267d9b84a80aefd5c8ce1dcbb07163daf4ae27beb964e97e6. 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/FRX611800192.
Lies pevar / c'hwezek (Ton doubl) - Suite plinn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc482a6d0c1f8af75989d6d49989cf1674340e27c574f9849087bbd7f482394c8. 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/FRX611800193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8f2b5ba675ea620ecfadcf53be9250523329ee1ae2b9343b4b8c7fcfccb09b. 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/FRX611800200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7159443b0cf5d06df4f0dd9406e3127c6f6e7fe45669169f3d6c633c0bd0e5c6. 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/FRX611800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cdde1cdde90260c5f88c478392ab799d2810eb04af784e3164a66f50aa45e4. 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/FRX611800203.
Entrez dans la danse (Kerzh Ba'n' Dans - Come to the dance - Breton Music - Celtic Music from Brittany - Keltia Musique)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67921d157892ca81fc19ce3aaabb739d72d86296fdbbc1fbab4fc85e87df0dc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRY479101602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8878a5b34e7d8d258d37209ac5ab253bc89a7d0fa38ea93a5c0fab7b527426f8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRY479101604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec5e7ed53b7853a2364d590f6b14da16c14da05c845ce3fd76119172de8b27b. 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/FRY479101606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdfb84fc13d998698665b870309461113997037bfa1af61596474c465f06126. 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/FRY479101607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d1307a8110803e4d9981bc590ba3f7c02dc5f806e79a13b6532d70e7dfbae7. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FRY479101601.
Live in Italia (Breton Music / Celtic Music from Brittany / Keltia Musique - Bretagne) (Live)
Swing & Tears (Breton Group - Celtic Music from Brittany - Keltia Musique - Bretagne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41019c684b73bf7001e83484d636ace564e0e36abec0cbbc58e5b8608256081a. 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/FRY479404601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04c68901c04af979effd8df5a265ef91e759f49c579b6bfddf3a98d1cc7e850. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRY479404603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de3279c31fe736b8281ebf4c8b405c30c10eac7d9ba856ce06e9719e4d2826c. 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/FRY479404607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf0e144c640988c7b6a1b38bbfe0f90e0485df606f5b983248dcefc2516178d. 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/FRY479404608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ba11c023289fab59d1166a87cab21e4f6e4c7546c0874c75a3c7089f7d226a. 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/FRY479404609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b511e0e5333b078efc49b1adc849abc95f29e8c80649233c6153407a2d24fd3. 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/FRY479404610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2055b26e1b4f64aafe64bc962d13a2d1b4a9252ed1f0aec767c440d5fe02b4. 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/FRY479404612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f00a98f9b5331781aa9e2e1033ced4db5c365d55434e709542b01ff7bd68748. 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/FRY470010702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf55373aec64c9385fadf6d938b1e8833cdeebd038334fbf55c3cfa27f6ebf8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRY470010704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1125aef828044b244ce31675cf90e937dfa3fe379f77d6a42da14b133a0102. 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/FRY470010706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2f4b61266db6c3cb322c2233ad5aedad4b7c0da0d4ff5766f62e46b0629d8e. 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/FRY470010707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2b0b5772c527a80a83c028b455467a11f4d1d37b67eef3d62cdc6b31668f1f. 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/FRY470010709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa701cc6689ccf21f7d86079d265072eb3a57b186c762459e70dc615bca928781. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRY470010711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012b4573c15ec2af0134c2e499e9f0ea1ba9ec19a028aae360f7f247852805d4. 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/FRY470010713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8fc1dcc855b362682dcc403a5ccf8d2f2eaf9d54b468a43c8a89938daa00f0. 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/FRY470010716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e9793f291e5227b453f51aeb011b4e2e15ded7119981ddcf2245db8589354a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRY470010717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26847d2cb88c06175ff0289885ff55bea352b77db05323181bda7cff4544b4c4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRY470010718.
Fest noz (Danses Bretonnes - Breton dance Music - Celtic Music from Brittany - Keltia Musique Bretagne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22a8b65f57233c593231781be629e43ef955820372bcaad7517402e53c8123c. 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/FRY470113405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b684e33803013845f3aedbce76a927c91b5d8db17149a96545e6a8a70f7882. 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/FRY470113410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86caebceaf11d213647b6399e67e35c6982b5e5bfb0de5c210a12e398889637a. 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/FRY470113414.
Fest Vraz / Musiques de Bretagne / Keltia Musique Airs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41019c684b73bf7001e83484d636ace564e0e36abec0cbbc58e5b8608256081a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FRY479404601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522480ad8ee24fa64cecf7f46bf6c61e5b930ef3db0b2601162a7168b08dd98d. Chain 2 (Bitcoin): anchored in block 957211 (2026-07-08T18:28:35Z), 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/FRX611800224.
Fest noz live (Traditional breton music / celtic music from brittany)
Les Musiques de Bretagne (The sounds of Brittany - Celtic music Keltia Musique)