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 0x3cb78ab3cc41f346625480412c2b164c69fe6ccdefeeb44ad7cce078f0756428. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d060752-e8d5-4d71-b610-39f4ca6ff9db.json and https://artists.proofprofile.net/proofs/artist/3d060752-e8d5-4d71-b610-39f4ca6ff9db.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 0xedf1e2239838f86e9856a141d9a5282146fe54e38562088da3011ad97653a9ff. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFZ22251993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538d42c12e1831a1d433a6724b8a52bb97ffc9c08c30ebd81938804f6692451d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCADX1850046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebc36bf260892445a255c2504732b9e81bac184c885f804e304f685d9c0361b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCADX1850052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf238c1f0115990d42361bf64f6502a347f2c22be288f8b8153cff2d1fe31e073. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCADX1850056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73976141fab9071005bbcc1f5f29f5693d69f918b099ebfd87ce84bd7013a585. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCADX1850059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ebe6f17a92cc26954df14a31313346c14559d49d4b986d2cfd4b14c0f6a790. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCADX1850064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3277eabe79d1d3926129df3c8b211b8cd6862d42127f23ca8e9215adca58e1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCADX1850065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1b0f5057102c4ca4914b2fbc178df0b5af6ca27a0f1545025df2d6836b8bee. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HINTA0000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d814fea439ca131eb68432fe94aedf9540d7f284e22548b5fcd0ac595f798a. 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/JUNIR0000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0127272f2029243725de7818f3ef01302d4c7f9b13dfe94952f55bebf9d5cee3. 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/TCAES2064809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5259d88fe4100304bf9ec11c672d71d285f96a74d452751b9d2ea083e18d308. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:49:55Z), 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/TCAER2070867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c45af189d73d5f6d3878aab85f28347dcd043e70188ae259dc59ec9e78986ce. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCAEK1925215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e61cd68c9cc3cbb22021235598e391ef7041d287e000eee48fccd4a925185a5. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAEJ1997950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e8797e00d7e3691ffcf8773b1da7188514576f0871ee598966a133be9f895b. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZDA42266211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ac6e34b9fa07c4f0fec764e35276e24576e47e92f4ad93144b24ad093be451. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZDA42265697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0331bf68854bab066f2f01b8fd23f4a22010be03b5686e7fa41709e942a96131. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZHN52233477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56160ce70679e844460aa3e78958cdf5e36dedc520c1a0842af491779c06f837. 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/QZES82295423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430ca497a5d67ad95db454916747d625f281b5f4ca406311fcc68ec8fdb25f0d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES82247815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6a8b33e1822ffe08c2c21dde8b57516f5af9abd0b968a5113de7000391368d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN52233482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221f39d0883e3f8b209690bbcd04b8fab8d65f22a93cf5e817a11b7e71a9444b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:01Z), 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/QZNWW2358616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cf93aaae99609088ee757f915199d1ad6460a05af04ca3626c4716a176b641. 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/TCAHX2487836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44fd595e9de14e1e027b2c626bddf7d920fd2e6564cbb86514ec811ee99e21a. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAHX2488202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9307d95adb86b8d012aba22761be0fb5ae0ababd5fabf1c126ff63e916ed170. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTBF2393767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ca087de5a013adb37923d88ee9a30a6fc488bb6635ddb2ba26018717f795ae. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAHX2488237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4552997b8656ae26dab3699c3ac7b9a9c248ea593c73143d73972fddd0e5002e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHX2488245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe63614d76ca3f90cecf5172fcf45012f5711d896f3a797c359c291e9b5151da. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:29:30Z), 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/TCAHX2488249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96d4f0d778a3aed597179576582e3f8e3f4e64a64ece6aae208b9588b60066e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZPLS2326668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2995142fd68999a61a8995f9a8c40c7c5f35104bc796c157d92756e3dfe5c0. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAHX2488269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17079ef32c135aaa31668b8db4c17127f175e42238e52cf9e3a86e9899f1933a. 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/QZHN32307265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8bf13c1be9e4824f60d96ecfdc7c878abb7c02f302710ee6c9bbb370a61cdc. 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/QZTAX2321692.