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 0x1b9c7e756c821770be00026c20078c4f81b37f4bf259aac9c24be63322d047fd. 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/20a2d360-97f2-48ff-97f5-92e6aa7c321f.json and https://artists.proofprofile.net/proofs/artist/20a2d360-97f2-48ff-97f5-92e6aa7c321f.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 0x18363d1c598fab4f5baa419107380cea65622a4a591c5c6c19793066f2f0e921. 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/QZWDW2457123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7722cd748c9c44630ffdf125546e0e00e82b30a9b4ff65f3ecff072c63d7c8b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAJD2595351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625c20de85c77d3afe49632a53fe661acb57771e81ffeb08d36ad4a360c4779f. 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/TCAJD2595682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d5bd0b80866bf576bba160818580cc2638f07c39e0b27dd74124500c6abd17. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/TCAJD2595760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32539ce0ff912d52da6f96f1956f6e1c5deb8c5233a5627ed0bc60990adf02ad. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJD2595561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb21d98e0c6593b94d10bccc99770b7172627798f28b1af025c20a444331e62. 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/TCAJD2595884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5afd0d96fa5dc9ca6dbd8995fa701d34d31052622e99c9e9b85225c227f1c8c. 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/TCAJD2595832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e889b59dae57a825ea999de46c5ce001661c14d38c5916fbca23b12340f886. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:11:34Z), 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/TCAJD2595445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bbbe9709b1a02612570c5c7ae97bf31492f4b62f78436e9ab5731b463f1aa6. 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/TCAJD2595307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45acabae513a017eea1bde618d458f10daf7f09a5c2947338b3be3f46facf6d4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:51:07Z), 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/TCAJD2595260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fb5f806645de7ebc5ce6511a710827b8fffc12e04defbf30d2f03914d0114e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAJD2595073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330934750978ea30253d74da7cc7100e2423a2ada7843bf096977637789580c2. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJD2595408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf17fcf45d3797322b2db35508410f21a7e05f9a2adad2c26dc20726ceb1ce3c. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAJD2595790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d46ad4267911e4cdd9e79a759ba280eb099b26092fb059da7ba3c6e5ba334f. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:07:39Z), 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/TCAJD2595988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca26ecf9922c6a2cb310370ac66afeaaed20c31bd1713b7b68f4599236c73010. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:59:48Z), 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/TCAJD2596597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab04121707df7539dc445e4798ebb534c26b79e6ded591fda22bfc8b443f9b2. 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/TCAJD2596631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62780afdfe5199eaa8ee292e7455b99decd4db9d28b9b120c7a50acf48f4730f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAJD2596489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed15a3dbb22f9ec7269951ee8f1e9fba05b8690bb5fa2ad12db73d0930e2817. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:18:36Z), 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/TCAJD2596441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5262f033f64889593b3e08c3ec84888fcabb2bf332d523f84f75826cea1e2a1f. 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/TCAJD2596574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5e5a590b518a30a06f8d596b9870267b80eea79d62967cec280e364cf7594b. 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/TCAJD2596614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a102930d394e439f88f0f3ca3b0754366bb64fd1970fa8cf21b944ec7ad1318. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJD2596554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4a0ea21ae7e09109fb95da3ff68a1f5a783e591ab67338996e8048a5a2816b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCAJD2596695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa5f57231b12541e028c1f52b476e36f96c7c5d0d4ac664992bb459eaacfa40. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAJD2596463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb549ed16f341169c9f3b9ab7f140d75beba7bb1c3ae7fee18a3a7cf25d9b2efe. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAJD2596680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bbbd492efdb3e494dfa68e765e6602c846f11c6950f76cc129592bd6247df9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAJD2596654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf497bfb1020cbd727f627b693880956a073a5d8172ddb98113891646abfae07b. 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/TCAJE2526088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83eacdab58a3bdc1c984248eae670f0de58a7491759605d9220ef66c3dc57ca2. 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/TCAJG2555056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb252ee2072a7ffed6ff148a837a367b1c1bf013cbf950fe65716f63f450172b. 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/TCAJG2573316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf2cb49d7158e9a0fa4876c04d4d5cb3d3665fb54027181c154dac1c6ced228. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/TCAJG2573225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025870b8234269873c76dd125b5c3948ab0624436c4409f36d7ea287811c5962. 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/QZWDW2535750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbe785edac82b0c4cb3c7dbe3b4f26aee98d8dd6e6f261f0d04904bdb942551. 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/TCAJX2518962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6eb3b802b2b86bb12ec2b61825b3426e8bd25cc6cbd0eae45f0a18ff0280929. 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/TCAJX2575499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4253d88664e1fa2e52dfa72316951bef7aaebd27ce1cf604c757c44ff8a15a6. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:55:34Z), 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/TCAJX2589466.