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 0x50f5e7c02ac249f258a5c90c7226494738dbb289b36ff62083573528fb3b674d. 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/12cca3c5-4815-4f80-99f5-0aeadcc9d5d0.json and https://artists.proofprofile.net/proofs/artist/12cca3c5-4815-4f80-99f5-0aeadcc9d5d0.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 0x670ebd0b1e76f21cf8c54ebbb2b19248e41b30aebe9b9571911e98a2c916eb4c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/UKXN22240028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f713bd881084171055a188b3a4f0060cb970232ed53cf72a6bceced6ede3cc. 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/IELOI2287222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754ef5f891b5738719704fb830116d48d0992a0715ca6824b2a7edf4780c624c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:16:24Z), 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/IELOI2289206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef96f6b620cb1c710b592134b21220340d81345ac2fa0c301ad86f0d38b53f07. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:38:01Z), 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/UKXN22253418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac8f3ce7dd33de0d72cdac2029d65e8dc82d204198241ac1a4d316a6c57f6b2. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:10:10Z), 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/UKXN22253405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a128abd31d726adcdce96219d1223511c73fb8e956b6c5809d64c86377d2ce. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UKXN22280504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b81dd3f03ceca7b2d47d0f014930ba1799f6c1afaeec4b32d8cbd68a141c271. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/IEWGI2200484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575d5ff4d6644ae975979d04e23c3234e660722674eba2445f9df816afec07cb. 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/TCAGX2343148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92a62ddd5e59aa7d9ea029717228ecc91197e62440206f437d930f36dc61774. 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/TCAGX2366457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896ef17ac53e757342820fe37dab9dd059b140dcf47c4a0b89255bc0799e8773. 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/TCAGX2366478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3b6b10ad1eee3b86f53f3ad0a31b076cbe2169d7dad1eed7868a84bcf2bb7c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:03:48Z), 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/TCAGX2366483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf858f16883cb0166020124db6ed7279da5c85cb635f3c5ec47b4f346320211a7. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAHG2328510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fd41204fe5d6ec1b44d3e4cab4f3c143574783670e63c8831d67b57f05ab3e. 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/TCAHG2393608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf134fcc7a7f8945df114bd0f920b45c068e9cabd58463d8d80210adc6d31cab. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TCAHK2391654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad12c339a05474a5d402c6f0f985ea4c7827b3e9b17060d2d57d0e76781e85f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAHM2389602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6d944eaeb0f7967b2d07768841e20d46af04946c0a2ba49ebd612c2353f869. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:31:48Z), 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/TCAHO2346827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc206a840f8e068a666f6dad1fd78ac6be5d906a04c116d8015adbac1b96148ec. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/TCAHZ2454943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac8528d25b113138885be9e08e7ef4d80dc4c5b315e147bc773fe0bdfb76b0c. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:37:08Z), 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/TCAIA2449407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780cb2645db72dbb4d713c337b9436ad5da2052fefea3758ed0bdef40ff9071d. 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/TCAIB2497437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb423f1e4cab99c066f7dccfb9f5af55913ce561f95471644b0167c68d8f31d97. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:22:20Z), 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/TCAIL2406532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc09e375c21699a579866935b2bcd8b2d9ffa6327dda8695d6d44cf4a065a711. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/TCAIU2412003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107c5129fbff54992f299bb6a602096fcce62cfe3ca099b3af9f845b196e549a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:51:56Z), 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/TCAIW2436148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6b297e9cb4bba76d3ead56cb106c242ebd06d9755ad26d60ee28f83a3e1e16. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:27:38Z), 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/TCAIZ2457262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53b2ad93344de04f1aa1b564af6b151fd626ecdef61c4b9edcc2728eac5a03b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:42:00Z), 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/TCAJD2412378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e5dda79be96dccf21cfcf9e655a7565baf48eb67ee1b5075cdd9c798f78802. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TCAJD2412383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fdabdeb21146cf790ccd060bc5ba6834638b2660303f0581266b758e64e34b. 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/TCAJD2412391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9e4b7cc7021da3b5358d7ba7fae9aa49b6e0355888e9dd0e1e46a247e6f07e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCAJD2412408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf61dec81f7baeac477182f71373d36c64cb7388d6bf3084b71c10138ee4d61. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAJE2412416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb7a181b73ce81d3015efb975b5613c64c42696bcf5ffb1573e12022b1906e4. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCAJH2543407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0b6356964b35ff0ce43b0de938360d5cce281c01dd5ba7351fe79d46345fad. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/TCAJJ2546165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38e003e91d4e90cb73b160a0c0052e97faed561177d8037a70d64b7619c521d. 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/QT6622517978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850293bddbfb5693b4a43de2883a9daf5a9ea332a7a6978330a170c6dba04092. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT6622546207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ab9e86cbb1d2d9536b917ff7e419ba86b85f439a0caec5c0855da05b843798. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT6622582821.