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 0xb7e703a354591ddd4b2a31f4c796e48d2a937d26d9d6ee6fc7f36e1339bda99a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3012557c-a929-4dde-8f3d-33eef4328c04.json and https://artists.proofprofile.net/proofs/artist/3012557c-a929-4dde-8f3d-33eef4328c04.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 0xe77ff13ceaef6cd314d4d67e2352d72bb762beb1492f913bc20239957741443c. 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/QZES52369396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508e0340d2f9f864852cf27c365144cf5db5d95e2ec1f75380758ea7c0541057. 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/QZTB72311776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8253b5db3fc0e45475957829d3e72039cab2eed7d3090f82a51be7078248f67. 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/QZTB72311780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f7434963d856665c1445ca9a113f973da493f5bbc9b28187f47d56c97c9407. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QZFYZ2490775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ed05fe539331da232ec2a719e6c088aec193b50e6a5ec6f51f53810496144b. 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/QZFYZ2490776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebac0be5c0f079d12bc5156de1736015b092f084e702be3c345accfe6844b9ef. 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/QZFYZ2490777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8a9adf6264afaa9636ddecff849f499d10cf50b051ffe5ad9e01f1d556f964. 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/QZFYZ2490778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac09b26885166a8e195dcaee06d9f3aa319dcf2ec4bca9478cd1584e5e1b077. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZFYZ2490780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f89ab548a92061b0c3e72a18afa51514a58a58ce321f2f73c6e10e1ae2fd93. 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/TCAIA2411996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e922694cfefed61146d5379e04fc5f764313d45217ae7646be9c1f4a5286eca. 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/TCAIB2404401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a330209389643afd188380c4c35451372699a17ee8ed81f7dbf8d34ace9b0ae. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/QZHNA2438678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168bf0c7969052b2a4517f09295efabac5592fceac82453e44b5d6ddcfb041f8. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZK6G2458533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd308a2e0cf9d67ee20d191a22a88e21c53d7aec1f16b85c86fe285624e23eaf. 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/QZNWQ2441980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b097d5b41417a898c06940f69a38fdc0c00ca03be0f6e4bec5507ef55ceb3e. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZNWQ2443241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc48b733e1f8c5abc30c05a329e80304872491494141d0603eee949980fe84d1. 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/QZNWV2451652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732ebacf1dac8024bd14fa7b93409a56e66fbe6ce16e583020488a3a9bb61f2e. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZPLS2414306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443d8e547bde6cda5e7e78b5bc7e0b835585dedbc3485f9e3cf3a9200a471cc3. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:52:36Z), 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/QZNWT2438638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2f93a5c05302ea14144926954ca0a1dbc0c5f5c7b67b0888553fc9ba84a5c4. 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/QZTAT2495944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd886fbb6e88a0e4c7e36d5951dbe92bf24b7a70a87640077fd922b538b812494. 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/QZTAY2494248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08c1a955f69a291fbfd0b9f23b6e302a90c9f03933d367e1f10cfd135b5d119. 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/QZTB32483101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59010b3d8114f0f8beefb3790b8a972840e7ffbbac5c28d4629619fc26f38601. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZTB52479943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729f72fdaecf957e6ce926cee8496b755ca93de5db38482ff1dfc5e924bb86ef. 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/QZTB52448579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30dd23982d608f5e9d1a17553e259f457b83f18a71d019550b5114bfeabe3a1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB52448581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9b4896d2584e88629e72517fde111969613beb9fde1fda73ce9bd5a28e17d7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTB52448582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa727f6a12032ec7148d0d58735104e08b04aa92fff6b4cd36171caaac84c7dcb. 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/QZTB52448583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a471a318b08d4aebe2ac50d92352271aba4eaa462104b031c4eef6794c06633. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:13Z), 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/QZTB52448584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0d7e5d189d16cad0f748824f4dd5e740b62f1543dce65fafbb6df91003737c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZTBD2415259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fda91fe6998630a0d511d27d427f41b02c37827c18cb724eadd3f9be8713046. 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/QZWFF2486358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92500d4139ebbf20617c1f056d2041b58d7ba425845e913d46ad7a9ab61e7371. 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/QZWFJ2421540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b7fe90146e63b6ba06ea1ea4aae38998e0c0297b7b94b87eab96a0264017a8. 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/QZWFL2493901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694da72fdddd69c33d483d5e0cdba3001a00da313fb0ca7d554bfc525d266144. 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/QZWFT2461729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc432d5c30f6ab2822ae6410249af79a1dacf7c73e61da9ed7cd3445f9d962a3. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZZ792415318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72093e44f410d69b70a2c2fe38d3f4cfcbf60b870dae4b2f9170c1486e78d47. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/QZZ7K2403570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09af536dd31246a0d44c20716c2ea4a738c3caf1658345c1a82af198f63267b. 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/QZZ7L2425801.