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 0x2a4fd51c536f86c3c2f42755d4657d7af7d0b3ab7a3794ac007e6d31a4ddbaa8. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d941e807-7c26-4891-94cb-f22027221259.json and https://artists.proofprofile.net/proofs/artist/d941e807-7c26-4891-94cb-f22027221259.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 0xdc27d559c26b6f9f75bd04ba30e555f3b56836afdef2a73ac51574460d25a091. 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/DEGC62002350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e9363c930e9f25756e60c7e069b8715bef03e8dc84d01aa034f0b8871c5101. 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/DEGC62002351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9a0ef8cb3c7b0ab3067667b1203b870d2af8779114387359ff5d8cd48be5a8. 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/DEGC62002352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224fcbb5a0723e4d18def1c39d99c0e1f09f3c5c46690ed45f4b2f62e3e60afb. 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/DEGC62002353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2328fcdd016c4611035d685244b2bd89ef71285575b70bb345ecdf6c13068b. 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/DEGC62002354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3a2872a8ce221acdaff08366647b7a22b62b340c37b51620c54bb330856921. 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/DEGC62002355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda4096b1e1cb5d9b7536a30fa3263e64d39b0933c77950e8a3574fbf5c27a6a. 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/DEGC62002356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0890a9934ed42217d597ffce813dac24fecda450971236bde0f37d64c8f36b7. 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/DEGC62002357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b3ec9ca2ff8104e1c577390cdca2fbdf60fae6f59c263f0e09443fb346f33a. 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/DEGC62002358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51767df61ad0a9a47d20e25735b0e2251eb89b1a585de2bc090bd41b4bdfa2fd. 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/DEGC62002359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda380e953a593662938d1ad014e6c16221721c14e46bdb569fd16b3db1f234fc. 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/DEGC62002360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b363b51eafc7509e81032445c2487ea5f6c89f5c909b7123defac527f6b4adb. 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/DEGC62002361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1afc7ecdbe70f805f0445aa70c6faf127739a86fbdd33bcb41f10d9e77efca. 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/DEGC62002362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6741fdb5da2523f962f0f2df1d574e30458117e40dd9002fdfeed38ebac8ce. 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/DEGC62002363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f52ca75ae20bce4f06d5b752dce179b3e2a9f237f96cc4a6176a81067110ae3. 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/DEGC62002364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef3ad7569a4d7ecee561e34b2abe7f170972e0989da4713d88bc84ee083f419. 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/QMDA62304279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa771a8a87228bdb8287776626d600d8d2c83383fc2e2069c70f16f5a1eeec70f. 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/QMDA62304342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d5ecf054088219f9d2c7236f04b7faf8bc597f3b3de9baed2fa20f465f3cf5. 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/QMDA62304400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61acfc600b18178edd16c4ba7184616311d1530ed1a5ce3e69c3073106ac537. 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/QMDA62304432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6573f0e0586d8d3b62ec462c3fc0d109d05f846b47d5d7f04524fb17508df71. 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/QMDA62304447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec4d907aceb36ee18f9a6ca97c47e233ffdc5c1567d5cce71e4771960482d01. 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/QMDA62304803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb248d64a861b6a63f67edd2b3e2689aadb088fd4559e65a0b7de3be85b7b53e. 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/QMDA62305668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f70ec892442f90e87db47d8efc87ef128b0b814584f927e378d06773b78ee9. 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/QMDA62306076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4160c2cd8f1810680209009b9b3fc7cb6880e39694671fabd3677c4d013448c. 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/QMDA62306157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6ae92906a468d958785d0fcd078936a9daf96ae266cd839ef6af07fb9f5642. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QMDA62306173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cd92ca391c2afdf5b152e3c71f8c3abd96836115afa0d636ef958f87557cb9. 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/QMDA62306234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6494064000d3338cec02d42214e3706702320c1eb47779394083c2dda16f67c. 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/QMDA62307586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf540c00dfb22f84f6f0bb33968221a78d75d052224e62ff6871b484346304d56. 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/QMDA62307590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4fbd20278d7b00500d4c84ded231e11de4616fe5c2f3e77d4ae926827ec57d. 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/QMDA62307594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90af4cbca04405d2794c664a735fcbe8700eb93db4cdf6526d7aca080c7c2fd. 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/QMDA62307597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8c3c4ed83e21d64aad93b915d4ba21dc4b77de46a43c7b19ead329e653ccce. 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/QMDA62306168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fc8566450a73d39885d36defcf8b045de3c110036a077b394d89c76cec7ca9. 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/QMDA62307630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c447314ddcb185e9281320502e77ae31960a7599ff5af29948d2a6ba47d4cb1. 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/QMDA62307645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bd9945da2ae37063996013c5d0d160fa494c3c03d5dbcae88a99beb7e359e9. 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/DGA052210587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb9d56fdd9d6810a96b6f36bc153289895d46cb30fce0280386aa8a076c1956. 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/DGA052210588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5b305d6781678ffb82899dae8ab52e997d5678016dfa3308e9399b5c52f31f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA052210589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73040499284aba4177fe0e907940686a837ac135dbe26accf1d0a3185ff96506. 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/DGA052204784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73040499284aba4177fe0e907940686a837ac135dbe26accf1d0a3185ff96506. 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/DGA052204784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c447314ddcb185e9281320502e77ae31960a7599ff5af29948d2a6ba47d4cb1. 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/QMDA62307645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f2393ab493f0010ef124a6737cdd8b64cec46767a81c78ab5fbd450675e843. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBGLW2100958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49c6d7be0cc8282ae50ada54c74118fa9c0b548612dc3eb6002963391fa25e3. 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/GBGLW2100469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0890a9934ed42217d597ffce813dac24fecda450971236bde0f37d64c8f36b7. 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/DEGC62002357.