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 0xc041e6538f81d58749a63d799f263a32cdf8a312c49b0ee7358d5216a2afb2db. 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/8c3d0e15-1864-4108-bba7-1988350310bc.json and https://artists.proofprofile.net/proofs/artist/8c3d0e15-1864-4108-bba7-1988350310bc.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 0xa638d7072d8294132153737156468d1b035318675cf25195332cd170db9d86b1. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:02:08Z), 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/GBMCZ0600723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c94ee4bfea9019fa2ba7ea0dafe7b503e6d7ce8b2f7c6888238e8d0ce1ffca1. 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/GBMCZ0600725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c88a49f714bdddb8c9bb1a2bddf13b16c066c9254e5d4e19309fa6757b1dc00. 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/GBMCZ0600727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb936b2a28f3fd7bd6c74c1842ba28a1f054b4a9539736f54aa687a151f8fc6b. 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/GBMCZ0600729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44541188e99ca5420349d875d5ec3d7f85db7a50688d55ba5270a9bf00dfca1e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:37:21Z), 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/UKBQD1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84762cd6b6d08b060033f15c75fb82afafbce3e19605790a5b154525eca563e. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/UKBQD1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ea99edf6c25923cf241f8d67c9350da54dcfdc56cd9c12b863e823b4d156eb. 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/UKBQD1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96636db5ec05ccb41d23fccc9bd87679264e49554891b573eb8c93aa2662e3c7. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/UKBQD1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95921a2ce2e9aa36dbd00ada5fbe87a1ba661b89f41cae3e9c09ebed3d9e62d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:08:13Z), 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/UKBQD2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaed0afa185f7163d9636f3280dbab0e0e7ac921369cb424559ae304aed51ef8. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/UKBQD2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfa394360252d9bd8180cf7472c8a9cce87555a7da0489cd3dc4a1557d569a6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKBQD2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6841287474f51eb96b9de7ea95b1ba851bac148ee01a4e35b2c6ccda05615dfb. 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/UKBQD2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95921a2ce2e9aa36dbd00ada5fbe87a1ba661b89f41cae3e9c09ebed3d9e62d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/UKBQD2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ec5d1fa0b54adbe70a82de34ee582052b8363af6f2e67f8124b278353e9555. 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/UKBQD2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ffca0bf494f182153c6845389136c8735fbe5863232650c75d5987c9c107dd. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:51:26Z), 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/UKBQD2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ffca0bf494f182153c6845389136c8735fbe5863232650c75d5987c9c107dd. 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/UKBQD2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ec5d1fa0b54adbe70a82de34ee582052b8363af6f2e67f8124b278353e9555. 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/UKBQD2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b52d4bf7fff40497bd436423a2d7f515acc160060c87b921df76558ac2c7d9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:25Z), 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/UKBQD2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b52d4bf7fff40497bd436423a2d7f515acc160060c87b921df76558ac2c7d9. 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/UKBQD2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e20bf6cc5030481d46fba45362e7d0bcb6a56568eeb9fe6b5d47c404567acea. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/UKBQD2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ffca0bf494f182153c6845389136c8735fbe5863232650c75d5987c9c107dd. 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/UKBQD2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ec5d1fa0b54adbe70a82de34ee582052b8363af6f2e67f8124b278353e9555. 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/UKBQD2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc516740600e800c526d4bc32a16067a04f9e967786377aa6921ce4d18baaed. 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/UKBQD2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b52d4bf7fff40497bd436423a2d7f515acc160060c87b921df76558ac2c7d9. 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/UKBQD2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e20bf6cc5030481d46fba45362e7d0bcb6a56568eeb9fe6b5d47c404567acea. 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/UKBQD2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ffca0bf494f182153c6845389136c8735fbe5863232650c75d5987c9c107dd. 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/UKBQD2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ec5d1fa0b54adbe70a82de34ee582052b8363af6f2e67f8124b278353e9555. 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/UKBQD2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d5415191dca41d362d4514ea1080044d2c47fff78bf2463b6d0bc82dc871fc. 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/UKBQD2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b52d4bf7fff40497bd436423a2d7f515acc160060c87b921df76558ac2c7d9. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/UKBQD2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e20bf6cc5030481d46fba45362e7d0bcb6a56568eeb9fe6b5d47c404567acea. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/UKBQD2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ffca0bf494f182153c6845389136c8735fbe5863232650c75d5987c9c107dd. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:55:38Z), 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/UKBQD2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b439fedc820371ffa610ec018d4091e943d189039ef815336371c07f8be2997. 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/UKBQD2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d5415191dca41d362d4514ea1080044d2c47fff78bf2463b6d0bc82dc871fc. 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/UKBQD2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc516740600e800c526d4bc32a16067a04f9e967786377aa6921ce4d18baaed. 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/UKBQD2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b52d4bf7fff40497bd436423a2d7f515acc160060c87b921df76558ac2c7d9. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/UKBQD2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e20bf6cc5030481d46fba45362e7d0bcb6a56568eeb9fe6b5d47c404567acea. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:20:05Z), 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/UKBQD2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ffca0bf494f182153c6845389136c8735fbe5863232650c75d5987c9c107dd. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:26:16Z), 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/UKBQD2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ec5d1fa0b54adbe70a82de34ee582052b8363af6f2e67f8124b278353e9555. 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/UKBQD2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b932e846aef8e6372217a0f7a0a5a85f381e303dfe750c0c46f68f2d60f729. 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/UKBQD2500009.