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 0x3448fd04b1d1958edadf8ff5daf717894ab6c4fbb39d055464cfa3e3ab91d2ff. 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/ed05db0d-215e-4f41-bd15-e6af98dbfcd1.json and https://artists.proofprofile.net/proofs/artist/ed05db0d-215e-4f41-bd15-e6af98dbfcd1.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 0x1b754bbc45a078ad8262402decbdaec82c58fe7920e8af745f8aed7c17b78945. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/QZK6L2206393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fabe88a0a417bfac1e83469e331394de79d5e8e0722da4b67adaee986aa1a4e. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:53:11Z), 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/QZK6L2206394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1711321fd867d43e851088e30af3a52883acfe2eb25037fa61a8ec2130c0f8d2. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZK6L2206395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2b065a9f48db4efe1e56265cc422306e563b6887495f6760701516a082f653. 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/QZFYY1994988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6fe860c3f6d12b8f608b617b294c500395db4c303d7d30628a851d7a857e3a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZFYY1994989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8629a7313244d72ce1d860332b64efa5a8adf41a3b84a52aaf7c540b7edb4435. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:58:59Z), 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/QZFYY1994990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29afd722800014791bd28d3834415cd7113d284b1b65001cc8374c4b8c01431b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZFYY1994991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47de5b164cf18ea9ff8066a0bb245505990e8079120cb85d117d296e04e1abdd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6G2081233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a64377e628c74e0bd3f451211af14a0f191b56f4df35d4311679f400352a35. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:36:41Z), 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/QZK6G2081234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b9171bf8e7c722a56b14869d942e4fde5d2e03f97c11cef5d28a8d0f3d18dd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6M2292010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634e9ce84f43ddcc2165b386cb8d301eb11691a27758f813ac05404741ac60f0. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:51:47Z), 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/QZK6M2292011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758b0084a3596e5c01ed6748a3a21c1c6b7ec5ddd23c6a3142edef4fc61767cf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6G2221542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae30abe249f8180a1ed252f620a4d1273e97619e05c354a9ee999d4321d6b83. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T09:52:24Z), 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/QZTB42280181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443a57073326c00936951f337bf64f331aaaeddcd9be7103d9886079e35d9644. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:56:18Z), 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/QZMER2233340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3936748a34fa43c0d62d22f9e11ab968e31add27cd88b8b01a7b1c2101eda8. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:38:05Z), 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/QZWFS2328200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1678fc91308839da96f3762cc5c01734fb1714d82fc5d8ed7c3beb3c4914df9b. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/QZHN72497242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2159893f76c62bf94b99e6214c6eedbdd2d7e969740c950a09092e241ed38726. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:32Z), 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/QZHN72497243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473587b114b5d7db190302eeb794e0c6aeff16b5d23f3cd653f583d11b41ea4a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN72497245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94943fc67c64992f31f6f53f562dcc85b6db0559db72c54b82f54c6913b09cae. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN72497247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffd3b889bd925fd33560b855297a7838cef357991bdcba67884feb0ae4142e6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZHN72497248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a591d6c8c772c198fcf4071fe43eb9ba9d34111879d04a2cbb711dcbe4c0bb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWU2428864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7a98712dbd9ac615333e50eb4ff4eb4e2286b8bf639af49471717030a315e0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:26Z), 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/QZTB32473610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a7c88781361399861af4818352f204a880c340362b0a403c7ad0bceb8bd201. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:54Z), 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/QZTB32473611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a67ad969dedfbb8700201141434ede7e0cb70be84d3210bbbc5a6cac1a14f1. 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/QZZ772401398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa630d77029f334306465eeb7d4680e48c7505bf1c348f5cd3cb1304769f5a0b1. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ7V2469098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71725a659977366e7b5a77b41d5c0dfb531aadb316c47ff9dd3533052e6d9ea. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZES92545259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0a688a10093d4fef15d0175f924e0749690e1104ceae5461fbd10b35077f3d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZES92545260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa741865c1e77fe1f4ffe77254d907615a07cbe29234ea8db03b4b8625d143fa. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZTAX2594099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae529cca85e8748f772d9f3f8c36d73bfcf2ed10939e31278399fa2447de4e83. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZTAX2594100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f20e87afadd55e068e4ea4edf023a182cb08e7e86215a142cd6336dab207dc. 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/GX89G2388354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164b040bfd935e366bcdb87658e02ad86f166eb157d03d4b5ebbc2895ba2cc2c. 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/GX89G2305579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117f26c817f2fa95ba1e4c4a053d5927a8a8db2713c8391304ab7370c63c4ce0. 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/GX89G2361070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ea0fc971436bb3458cdee9623c5d00b3a345803de3d26a7f50d6a745910cc4. 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/GX89G2330451.