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 0xfc10ec98e52eb3a289e284623312fab23eeb61a443489749abb4c26f2a12bda0. 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/67f08daf-4263-4bc0-94f6-53327bd348f2.json and https://artists.proofprofile.net/proofs/artist/67f08daf-4263-4bc0-94f6-53327bd348f2.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 0x1af3ebfadd2d4a65b5335d9a35cfd079c43bc1b38f3a4129a57d3e8821b3f12f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKU932400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5bbfe9921b175444b633ab0aaffb6a8fd91b3051b2af92ae57080796d23eee. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ESA012053550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a409849e83981cc28c93c6a1d365b998589a91a3ef2f39a6744a218db36d08. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ESA012053553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85031ec770075b438033f1f6a28c8edfa42f98ac92704e9feb4932a237e0b790. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ESA012053554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa353b10e4de4fbf9bfd220639524bec8195493cd0874c12e9e026ede26f9aacb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ESA012059519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa383c2795f9d530787302cc7e6641ed00b14e4e74b786e66069c92fefe6c5a0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKU932502476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeaa8af8c9bda6fe9f51a4b9fae4521a523eb769b52335fbbbb1d20c37be3f08. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKU932400742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11400c594589080b113e2c79fdb3a57f40fc022c3bed4480dbbb74e72a22763d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKU932400722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b02882a0622d7454798e8518924f5d30e83541f09c58d1b71e0767635ae0d8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKU932400648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d9a4af7b0cf8a307484f998d59d3c2bfed046f1a4650e9619cbdc0e675e79e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKU932400468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8406e2208983b37873d37268acde4466a0bfcb39efb8d253464e819e4890c2b5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKU932400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1baa210db26f4cd0f1aa9ad307f65df143bcc4045496a5b86b58240f4cc8515. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKU932300823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcc97907751b58b8567213ce9e6ae28c19a5e03e2a1fbd9e71a08308382178a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKACT2373037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9d455293bb3eeb1720540573ced78047358579bd45635579595e73894faff1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKACT2371391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628e64a8eff1101927acd4621fba9793fa50c8d2b890501b9c4466d13401b6ae. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKACT2370669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2556c05cde6ad14014e2e441f996e8f8d6296791f8e897cb69a7cc0c6df00a06. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKACT2370448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dd65bcefe3e1e3e2257512d374a65a45c3734ed5d2d2fba9f883b8426dc5c2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKU932231808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bad4918d96dbdb086f3bbbc7cdc4128819b44935f6c4e42e8b76f3d8ee853af. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKU932231691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc10510409546f5858e627e622af88476589e9f3fbf5dbd4866b3d7d91d7b7b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKU932231588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ed055c1ca044b9f11ed0a3c5f56168db30482d053c3acfb4a61c4323d084bc. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/UKU932231196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756bc5a65bf9e5edb4baada3399ab7a8bdd0d97d97685364602e1eff4ae14512. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKU932230895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073f3d1b9c4cd9e8e22f9ae9023961ac3ea6f1b388fdd058268c922fac412a36. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKU932230460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33a54447090aef9058b98579f15faab6a533d21b602d2b78c23b9a1d37fc366. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKU932230221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cfb6847c0b6c68d71be8e8fac7f6847f7df6f7cb0c86a48f73133193d00b8b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKU932230089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d8ceb1a3f0279a4f871ce6025c81e769f8785b77599a8986ff5c608e7fbe96. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKU932131809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82652840a615586b53ad83ddbe4db27659f333d7e5a88561efd8762954d28314. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ESA011665819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc4af025f2029bbdd4b7c4556203cfe57d319c1995f5faa3a55fea2a43df1c4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ESA011664863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacde9eb1682a64822edffaf9da275b71e8c15ade02267f4e8e9924e7d167639d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ESA011665818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a76d71d7796266dbd83f438d358e0ad8038fe407dad1b69cb48a4b366aece9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ESA011781696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5289686e42b3440a2dfcc8289db81d7fca0034fe52f6b7fae66c29660e7d05. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ESA011784033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044618f64c27e5b57591505ce59d185c7c2369acc4108b446a8fd629e7d2dc11. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKU932503109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac22af9dd383ff1c3464802025bf39544328b03f1152195809c75c621ec40fc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKU932502921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ee770547e2eb3520041120f56b4f63a79a4d0acb981e38e255a45937a7a0e6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKU932502664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7482dbe85049f97f32ff66cfdd15259d7e631e137b54477e540bd62af1a91f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKU932502607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a4a62667f6234f071198a1d48a84d333df84aa1b729532e24621f651cdb556. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ESA012063641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d00fe84bcf0412c30104847177a5d6e06893f5b8b5f918b3e3776aa73933b2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ESA012143746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f092ae7333d35dca92ae668c269fd446ac180eb22287568fecf2eea83b3234. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ESA012039156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec0f9b89531fd611b2b0d0b53da7b272d59176ce524d36886229a5d35672539. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ESA011929185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e028ec4f39a15dc16dad0cbaa71ee0ec8ac63508b98603d729ab12a5bce175. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ESA011638199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ac0329bb8ceb175b5bba3e56370202b537ad9c8403d0db449487988b8c9aa8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESA011784008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72efd1cd857e2ed9a98b269536e9fb25415b31f2c22f91c6696b9b26aecc5bb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKU932300618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebad85856edf0f7a0f58575991486464aeb88906a0e6cec01280ea61c6034dd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKACT2371372.