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 0x4435bab7821066190b859d48c3950e707f144bd0d0c6fc6b02efebbe49b4913b. 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/bda89a5c-19bf-4e52-9d2d-ed3408e42408.json and https://artists.proofprofile.net/proofs/artist/bda89a5c-19bf-4e52-9d2d-ed3408e42408.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 0xf37b4f7c344facf3e6d78a9bb9e1d939c86f781d032813df285c4cd9c29b67d0. 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/ES39A0520012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b2d0757f54d1445962c2beaf1f970b1cf7f1b175322817291f6a8a9753f6dc. 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/ES39A0520014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d279755397ffc7b7aef906743aeb7f81ac5bead718117e40488d543205cab59. 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/ES39A0520016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1422fe71d7d13d1c89b5f7fcf0d834cd3397b3f4a7cb2313caac34a668550ab. 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/ES39A0520020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e9444a15294dc23373ce7a3b784a666eeb564ebbfdf879ab4162321ae64fe9. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ES39A0520022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287cd7d4197cc75f202c07316238570a4dda842f447712bf919d5edb319e588b. 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/ES39A0720027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1259b958915ae3a27d60c6b81688317c8283ce50c801751534ee4b8e273037be. 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/ES39A0720028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f7c646e7856551edbecce16d36b4702b0737d5a6d920cfb07ab7d131dd9c2c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ES39A0720031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1f883bea4527ace37744a3a1a6c06c0eac224eb18267709f64ba47b619a0f3. 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/ES39A0720032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc082bb463872559c671f5fdbf9aa717e4f803123019413ff9e8f43d8a22a2a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:00:21Z), 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/ES39A0720033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dff0dc3da4b07c13192d652e84066f27e703e486d2d8f53453aa29fd3981610. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ES39A0920047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64769c9ec52f413cd427bdb626f476db8a0c924610ecebaef3b4798080f57e50. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES39A0920037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabb8f10c03cd868bdef98591ca0d5cb4821536d9cb2d1a6c6f425c9b0a041f0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:37:45Z), 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/ES39A0920049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bc8d371cb97eb3a7eaa5085f66064ed0ca0eac686dac8cf021ab0789195def. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES39A0920039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca840b4ed26018b5d92a320360d239e726917a149f0d2e837937153b0d1c843. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:22:40Z), 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/ES39A0920051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3924e8a0f11af49c4cb36a5a879fef6dbc925477c919369bb1f2ddf1ecca95c6. 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/ES39A0920040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4912c14b04942afb7a3469231c70896dd5a37bb21fb98b8cfd73e2e65b1d74. 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/ES39A0920053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8db948b70e78f3d8ac28e4539de04134096f9418e443a7debce8f3e29ec6dde. 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/ES39A0920041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b5f5407e65ce6335e1a6046a569635e45840421a0ae47189434f3b93d758eb. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/ES39A0920055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e985df1945a1157885010f506194a435f11741eac9a3ea91c29c6b99ff3550. 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/ES39A0920043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd1277ffafdc2f69aae186c5181416fd3454b4132a15f944d72d9073e1cdb0d. 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/ES39A0920056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65631cd250e591832bea885d570f9bc60ada309be2f0a9a6695b7d19cde26af0. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ES39A0920044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fd4afa38791597619a3f76813ce3c15a62808a77a4d900a2ef304f611b7ead. 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/ES39A1010005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9190a76877638abf2f2f261ad58504cd9952a97d50b5cd0eb4f5ef9c6912de1f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:15:49Z), 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/ES39A1010008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4f081ae84bb26b69d76da3ef6193d5657a17ce1a0a2f7dc9dadb7e0aa6cfcd. 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/ES39A1010010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6ff2895c6d97085aa1c84ee7e97f26f493a54be79460eae8d18ac2cda467f4. 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/ES39A1010011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc34a590300deb499b2a59193b670fb61b65e3ea7e282602f8b644e8cb9569d. 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/ES53G1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70236f33b95b17dda7e579bfe006e80ddcad9eed2435489e4209a5ba40e350a9. 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/ES53G1300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc34a590300deb499b2a59193b670fb61b65e3ea7e282602f8b644e8cb9569d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES53G1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e776853f443b7c457d26b7baa9a133bbabfaecc9e7e83d9e4b54826a57c8c5. 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/ES53G1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787472689fa09a663473340150bb00eceed231fb128e40f8e9c8910622d9548b. 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/ES53G1400001.