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 0x4c336c6850d6ab91483396b30ad107c0d3da9623dfccb748d5b40d39277d378b. 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/23650b33-9182-4e2c-834b-764186fcf216.json and https://artists.proofprofile.net/proofs/artist/23650b33-9182-4e2c-834b-764186fcf216.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 0x625b4b4a065cb8a5c693a36ecdc0d56e626b0b3253ad28dd84d28f0a72d39cee. 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/SGB502220898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086a5edafe60102a0e56742ceb58558ebfe912dc54fb08593310b552519b8d13. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:21Z), 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/SGB502220900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9f91f4544cd1e341da1be0c5cb01f8d91d804a67dac7b46eb335a460771fa5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:47Z), 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/SGB502224587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9261cce50aa527d5554ba412d66def565aa506e3ef3d282affd4786f084bebd1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:51:48Z), 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/SGB502226074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bc9241e67ea5b95575e5f3492bc8854cf75169ae8e1f636bfb8aa59c9284ea. 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/SGB502261410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26e0c591fd479f19c676571c6f4ec3a4b81df92b8af692c2cb914e54a7d45d7. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/SGB502266245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5234e86f16512bb6a7b6841f92ce23a6a3bc71749b5addeb6816c97c1eee60f1. 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/SGB502299319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33038b014d24c7c6945360cf0e489d9ce1e52387d67060d9580d75af12a9fef7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:08Z), 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/SGB502299309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd73ef5d0ceeda890d78aed990b54d4f67c7023ce2854ac7d4c536f1da7879e1. 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/SGB502299312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593e7fab72d2368108cb5497633ae0ee9e811798d0a06bf92f7526c8393dd782. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/SGB502341848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf6e70c76a1c7d37a0e6b549260caecfd1e81b5d8e3527a629691400af33731. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/SGB502334562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0c5cd81e43b222e5a0297f2483374e34f93b9279d0e330f484cd819d9639e4. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/SGB502354283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29f9152cf112ccce23e0b35add62c1bf42dea5969654529f923f213cb3aa599. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SGB502364064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cd6879a471f9a0de02dd3aa72b5b515bd18bbf0c11df4d9c48fd1603f0978c. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SGW502313006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ce69d57c38bdfac5ca9cd62903ad38dcbf29ed75638e6a240d7acc7d7949d8. 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/SGW502315781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c57212e8828f6ebe9ba0f85c64c5d10aa4548ceecf8adc1d2a4114d4781ede3. 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/SGW502313538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88526dc026b99ab58b3bc9f1702fbb9b875d1975c283c74a06206e55cbba17f7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SGW502321850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d801af258712fa83f8d80beabfd4e649cfa6383fa1759fa1f8db2122667095. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:01:48Z), 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/SGW502321847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1fbc88b1c569689d3af75dae12ed60113a2580878cee22522e0422793d67b3. 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/GXBAV2311440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5ce7bf76fc9098e4f6e663561512fe2e0ff49d840e5c2e255f4665d2703f29. 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/GXBAV2331909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1e70ed65e36bac2f074954f50f744013787bc5fe793ac3570f8b936c55d1f3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GXBAV2377355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd971cefb24c2061f6846fd80a48be55796a9cbc8c1b063a08cb2cf3e825bc60b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:29:38Z), 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/GXBAV2422064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdc36e6f0b611feb9559daa2cbe934ca58336c57e7d31d7ff9f0310a71aef8d. 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/SGB502464512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432c385dfc58b57e1656837ea57b919157feacc1f9d8fd24ff9626f30f7aac1e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SGW502404687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1f3425782b3a336e7c967ebc89dc8e072fd09149a302b3c20af98ee921cecf. 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/GXD7G2472440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52e7660f168a8912083917693f6e007dd4bf08be22f8a56f7745d861185401c. 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/GXD7G2493884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e25d62c9e6c56c210fdcd1b0ba6aa12a9fee1e83a834fa75b0a053b8a4f4df. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:46:46Z), 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/GXD7G2493885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6408cb51fc3d0a49eec5e2f020bb998e0df6adf6741d5f2866c9c62d85beba. 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/GXD7G2493889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf4b3e871c1564e10a447f12a8b46bacd6f2530648b01fd59d83fff5b3aa081. 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/GXD7G2493890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10611800ea72c8dda3627e59dc8ce5f14debab6d7e373b2cc79f8a41b407f40. 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/GXBAV2269304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0685b4a9b422a3e5a4bc12d6bcf7593d2b65090bba32ae99fb4b938db6b79297. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/AEA3A2253292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ed9518ac5e0f70ba8d241224c482fb0a27b13d0d1db84cc361bf8bde9ec326. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:53:48Z), 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/GXD7V2515282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dde5e46517513516119590e6bc59758b2e6a05ba896ccb2336f02245478608. 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/GXD7G2521358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42a35864e831e8715447794d1908df96e46c9e78431da559a68026412660cda. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:10:13Z), 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/SGW502560723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b43a42584e166be03fff33106be9d1bb63198484c7015af3db6764f77b2e54. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:44:26Z), 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/AEA3A2592539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d76ad33b371e1da44be097e5239d07a34ae63512e40fe264d27f120c7715a3. 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/GXBAV2044423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc36dfb84f9d132000b01cdbc525b546c3cdb47f03b6bc962553e6f1d45c80c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXBAV2015758.