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 0x9bc24c48f5248c77b83ba109d09d78497b81762364a54d78de11632a84a35f97. 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/50a81fc3-f233-4beb-8c99-ec5b1628927e.json and https://artists.proofprofile.net/proofs/artist/50a81fc3-f233-4beb-8c99-ec5b1628927e.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 0x7fd058bda061772bd5f0f7e411e3d8219f0d9cc1efdaecdfae23fe78d14675ea. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/HUA761000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84811a5bdaf373282fae14cf632ee427d1c7ae2ee3d95fa83ae765dd45692697. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/HUA761000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1509cee388bb7963b4eef8ffce85c2216273adacc9ae9c2bf56e0c5a7a2b357a. 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/HUA761000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a82c6b72ffea72ecb2aa88f9ea07b3643dba404d561b9858d882afed5a5bcc2. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/HUA761000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23429f9db8dadb5855647f36cec1a29bee7f4e053fa6ca737f93253dd8f4ba78. 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/HUA761000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7ee1c13c8a3fccb7403757700743ee8575d634d2ae6162805f2a9891879806. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HUA761000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d41a421cf2ca2422f325095b89f1e9478fb92b1b44803436e42cb5e0a611f7d. 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/HUA761000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e37500876e3644b63a63d35154cbaf692d6642cf0194376460bcfaffb6905b9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:22:55Z), 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/HUA761000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb860976746bf67910eb960c81116b6dfcd638897a0a644dd43a3b903a2e78e0d. 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/HUA761000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c280a1392e215d461b166ca2b0e25bb65d5953df104100a34c9e49da6e3b973. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/HUA761000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b7ac4765ed1b04d44727484efcd84d6538872f27d2c9e5deb0e2a81a048c17. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/HUA220800289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da883560f2485413fb8b5e27d45473e10165da51234d89f03d7329a18d4e3a5. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/HUA220800291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3268808c77c0a55e986305bd837db217fcc9130d9f7fd76a9a43bd4782a646a. 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/HUA220800292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfa4cd30241e2c6e54ed69406547d03b2fcf94fbe34b3b701c50e13735cef33. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/HUA220800294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a986230313caa0824c0baa784fe57dad44a1f55ae01ea0870e6ea1a03b2eb92. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/HUA761300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98664a498be73d69b09cfb898d391e8a67f05ea631b933c52be13e457b9bc29e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/HUA761300242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12470f4f097435fbdc86002a11928689911a3f34589225c8b2e48f959883aad3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:02:02Z), 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/HUA761300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1915add43dc9268a303a3f574a1f52330ce24b1f2d36e3db032a677d89cb1acc. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:32Z), 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/HUA761300244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dab9a4450ed5bdd64f86f90534310df32f4eb6135376d660f7fcd2173483f6e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HUA761300245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632f7453ae7b0227092c43a8b4815bce40153133c2caa62ea34cf126dbea23e5. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/HUA761300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90252419fca939a7d120c2e3c00af0d2f8810ac75b21e5a2d51fef2e9c08aa7. 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/HUA761500338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba496dc6d58616f134061de6b5fad1c99db1f8b647eb1e307fc6f86acbf6be8. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/HUA761500405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ca957aa26ede96db22a3704ed02364b7c438f014a66eb4e72da81969d7e277. 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/HUA761500337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9988c068c3bcb1a3c3dcdc1efbde239c87142c8178710b15400f1b694b6764e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:06Z), 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/HUA761500339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc96a36ce05acd6e6d2c6ec95d614b462de0e1a3e45a773c2d192055a1e719ac. 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/HUANY1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd058eeb2d5d8f9dadf87b5c6786edb7b218f00a1ed740deefbecba136dcf76f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HUANY1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59560b75776392c996dce8488da94c8611ae022f474a8b19d773556a1622cf5. 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/HUANY1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d443fd6fbcf6fafc8c266f208aee05a115f16b5d4ba00b87a57465cd3ef977. 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/HUANY1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab0ee99d3584a87c996eef5d37f80fcbd7048b71469062f972b0d058d35d58c. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/HUANY2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42fb4d1222b143f7ff7ecaed04a235592d2034a1915713ea1bdec51a00a23bb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:15:03Z), 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/HUANY2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4509cb4177a6912000567dc77cede121d4800707f02f2ff7e5a2294688d8391. 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/HUANY2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00ecbafb7e7f100157b1581b302dd214340134fbcd14b2fe006e73956c347c2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HUA762000617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2fe9383861c77cbf7bdd16560c60bf3591434277e248b5b2589a4f1ca85795. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/HUA762000618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8f5c160be559d9c9bc1c8e03e50027127bfc3243924eb214340cdd73ac5350. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:58:08Z), 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/HUA762000619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3835b5ddd1ad41ff0a01cfc6792d68c8932310ef75ef0aab6fe30d298c7ad261. 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/HUA762000620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af187940a51750e493e75b54438155aa74d8434e9b64f03b01e0b3132c55f34. 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/HUA762000621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a42c484656ad833077e43b064957f8b996855ee6b0dcfa8313cdc81fd259b2. 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/DGA092326203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68f21cc3b0e597fc56d3069da1745df2ba0b7fcf157eeabf91494dad40a99a6. 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/FR96X2441328.