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 0x7d6543962376ffa4c568c6e08422b30373bd853648d70b4d998b38f0f8cd4f83. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3acfe8f7-7d90-452b-aef0-0cf7f01e74f1.json and https://artists.proofprofile.net/proofs/artist/3acfe8f7-7d90-452b-aef0-0cf7f01e74f1.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 0x6db5eb31b9ea09f70f0be9e193ea4edec029ad54dc61b20374d474474a4dc965. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBKQU2163908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d08b34dc4f9d7f7b8ed40e9837063f8886edea94dde0694c81eacefc44b9cd5. 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/GBKQU2198229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf829efd48f0898e3292bae5b10a0706b837a2bdda3eba4734e8add914118b30. 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/GBKQU2202845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cdd28430f81d26334ac3207ff442c4c9bcb75cc63693e5bfc85945a2339423. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBKQU2202847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804ccda2f46c40f958fcaab8d9c50df82c0b8c9cb0ae8e570c322c472fec2f3d. 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/GBKQU2239772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f35ed6311a83ece3cacf982f8111b057f6b7fff9b6e026aafec7ef734dbb4c6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBJAJ2200869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5cae00fd1918e93faac6351f4c866a7a473fe18985af253223494271dd16e8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBKQU2267534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81335706d4c22150592e54bbb44f6b9eb58a24f988ff46823afbf67260e41dd1. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBJX32005137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc8e02369c75aefc4dc32069499864bc26f6a0fdfd48811b2e7156ba7e8666b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:02:45Z), 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/USZ4V2300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49380c829e2bbc3ef1f7a67777ebac5f5e0994834c6871f91b4867bf931806df. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:35:25Z), 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/QM4TW2491102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88993029653f70c0d4cfb13fd4e718af47e3a7b3a27209e95d16b4d5cc7e60cf. 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/US38Y2410847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b4a0e8a70627d6f018ec783a2a75b75b99d20b283b581df115a27196f05e7a. 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/GBCPZ2424033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a722b52877ec287e7361b5b9914feb78654e742b91ba40826786e4f440852f. 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/GBCPZ2424034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21b3a049991db620fb4174036941a1983deba084cfdcdc8042b6a2a546cc8d2. 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/GBCPZ2424036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ef24ddb9833225d22bd8572b7cffbaf5f090da31478d4618c03c3f1551df22. 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/GBCPZ2424037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b4a0e8a70627d6f018ec783a2a75b75b99d20b283b581df115a27196f05e7a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBCPZ2424033.
Get Physical Radio - August 2023 (mixed by Pig&Dan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458f7cf15cd3eace87f0c693cf3e1078feb3ad70ca6e08cfdebe3a506ff2f0cd. 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/DEBE72300770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ea6d3cef3734044ee4b1581f5eefe754263fce5eeeb56024f2a6c49078634f. 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/USZ4V2400147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856bc93b13bb43ffbf13bd72560c9782ff9dc1f1953624641d862688c7261e18. 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/NL8RL2338362.
Buddha Bar Summer Vibes (by Ravin & Charles Schillings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8e28b9cc9ec7f48c57e4c6a8da7eea3db420530e049c772a2d16e993f2b8d4. 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/GBKQU2202846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856bc93b13bb43ffbf13bd72560c9782ff9dc1f1953624641d862688c7261e18. 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/NL8RL2338362.
Redolent Tribes, Vol. 2 (Curated by DJ Chus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1434f0fab4fd8443f0a2724f67ece9537316c3e3c12ea77605d0e7c4d1583572. 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/FRX282224094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b06eb8a65386a46d2fdf3d6e31363f943484919624fe039632f24485d96862e. 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/NL8RL2444094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2c800d70a9ee1385c001e2987c503666e7dadc2be8d9fa762ddeafea3da9a8. 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/QMDA72419052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87810c9f5fa8f37e966492534f72daf73e117cfd7024c32d52bf187d165248a6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USZ4V2300299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab95c17f04b5e97771d9265695df61f65a0aab2c44a817b1844f3a834b2690a. 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/USZ4V2300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab95c17f04b5e97771d9265695df61f65a0aab2c44a817b1844f3a834b2690a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USZ4V2300145.