Pyura is a large genus of sessile ascidians that live in coastal waters at depths of up to 80 m (260 feet). Like all ascidians, Pyura are filter feeders. A few species, including Pyura chilensis are c
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 0x1aff594f0d00ad6aabcc0f6db025d11258166735d8ee518fadf4f7e765049350. 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/b0cdc63f-cc2c-4c0b-b379-eb6fd1894f56.json and https://artists.proofprofile.net/proofs/artist/b0cdc63f-cc2c-4c0b-b379-eb6fd1894f56.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 0x168413fcdc247aaf67adbb66c98823a38a88c5feddd67226ad546dbe5462aaa2. 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/QZMZ92387440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0626092e4e7951dad58e76442c525030ff67766f61da67dd228535548b94aad. 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/QZNJV2395266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b67e99e480b1e2c3ace8675909e6f247be644afa76b55be0b5e4de5fd32a77. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZNJZ2384378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63a229a81d9e1d5e343fb0bba556ed77da55d6cd9e61bc5c814ac0ba78789b4. 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/QZW9L2338951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dfabc0ea90267e7ac3350a9c0627b1c8031ff727a8b4869e7a5b0064e34854. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ5AB2082389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81712cc3792616ad2bcb0c4c0c964b35bc482c4c331a9eb087828ce609d7dc61. 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/US7VG1820312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ca2a63faa7f821fc0660d0ed4a41793bafea1288fdd41c0a8fc49f23030063. 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/QZGLS1978891.
Water Balloons Remixes (feat. Barbara Williams)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274bc706c8dd1af03db216c6ab3fd2552baef89851b2501e04dd20e85e7e114b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZGLS2442190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02db003d9e62cc253a15e3426803af3f0ce115b24ebd245c5c690410da7341c. 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/QZ5AB2404387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b67e99e480b1e2c3ace8675909e6f247be644afa76b55be0b5e4de5fd32a77. 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/QZNJZ2384378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168413fcdc247aaf67adbb66c98823a38a88c5feddd67226ad546dbe5462aaa2. 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/QZMZ92387440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3734bd9b4f06405d174f316d6eec1a0fad2c9ea47ab105823a33be5b08f3bfd7. 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/QZNJV2188546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4208f1e12d1fe174182c9fc095fe0e24fed9b515a51f8a3eb75f9058f1f85a. 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/QZHZ62120158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa308871cf1d1ead114c97cd78bf5a8ee1779ba5b8d168fa6ff2c5d4745aac54e. 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/ARF102000223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72032838f374bef887091f6abe1b886c3a78c5b4f1e63bf8ada034ce8de1f4ec. 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/QZHZ32005263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6037deb2e6964a4e75f8b67fffb77ddf71a36e0f7efbf87b2540d510b4e9b67b. 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/US7VG1841122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff94f197e749cb1da3982dbb53f5e4a26e636e406f3d0c2638ee86beb958e0bd. 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/ARFEA1600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e07fb84e63d92cae71f926ebdec910ad622f0b5d9a754af93d8161098eb0f5e. 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/ARF841700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6f7cf952a5ca48813b4a9ed6b136e19f3cf4afa7311344a7101eed6f4f7db7. 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/ARFEA1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ddc493f6d0947b0ee05efd4dc4dd0d478590cb3660b3e7f22f006a53d6f2a5. 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/ARFEA1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835de1a54c30325e962366e7d77e301f1fa0741b95a1df45644c2e0d6f8941d1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARMZX2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40aef122ccefb3548c8d3f6422b20e781ce699f7c11fcee44704df2995d5bbdf. 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/ARF102000132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bd1d7250a9612cd49e2315b77702901e44deb603da7863803d1df09bbd8e71. 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/ARF102000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b85b34617ffab4445ec83ea31e5a77d280336d1b6d4f19da119fab816d009e. 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/ARF102000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc2fe233da3a3b66cd49105429dbdab91d5e642a8b8a238ddc07c4451e36c85. 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/ARF102000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28e925afeba22e85f7604a9c88e5f1a41c40411b60b6930a92c1119058af62a. 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/ARF102000274.
El Mejor Recuerdo (Acoustic) (feat. FABRO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081fc3cb88c51ef1a73a4d7acbf2b8f99f507d52095e7930e5a85372e21a8a59. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARF102000275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa308871cf1d1ead114c97cd78bf5a8ee1779ba5b8d168fa6ff2c5d4745aac54e. 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/ARF102000223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683c4754d00867ca1fb723e0a37f3629af2aa2e76756227ab39396a77c6458b4. 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/QZGLM1931246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cb7c25c08f5f4b3adbde4f2252d2f264db43f41e7ea7174dd2296b5252aff1. 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/QZ5AB1649458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835de1a54c30325e962366e7d77e301f1fa0741b95a1df45644c2e0d6f8941d1. 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/ARMZX2400001.