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 0x659432146344e660a5e5404469621e985a6d12d02533c62ed077f1a2638ef83d. 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/e5c5207c-7e31-4a69-9ce7-f3d415fdf7c0.json and https://artists.proofprofile.net/proofs/artist/e5c5207c-7e31-4a69-9ce7-f3d415fdf7c0.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 0x7aa417011025db5a80a29422fb343878942165cd2dc80913f332a994401ebaf4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAEQ2033829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4195c06628954a9ba95c4c1c44e72b7999257630e5b10cd62882663c90859996. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCAEQ2033837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7647bafbdc8b87771f1ccf413356dd44e02faf708e61e8102674e9894998aef. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:48:34Z), 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/TCAEQ2033848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa886aa67aab423b6b2730de787d0ea96564df016b74368dc9d6289800aefcb63. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T12:02:57Z), 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/TCAEQ2038316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9aea03d60e9c384bc56c23699c525632ae3d0f0dfb5c581e79ce077eeec5d3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T21:58:36Z), 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/TCAEQ2038320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe8394e456ecb29d737e1f660d8093a72d0550f928a58f35e4ed68aeb512ed7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:32Z), 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/TCAEQ2038325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf09b8b0e656bb0c2a2fa668bbd696013307b1015cba17180f241b5828b0e2f3. 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/TCAEQ2038330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb348a64fd1ffacf77ff0e99fbe1e1e35f259105a0cae6daa1b5e67dd3d9fb64. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCAEQ2038332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46489be70efc1928876288631569639643aa04d24644482a54db37c84d3c27b3. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T11:00:58Z), 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/TCAEQ2038333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04541d50e5cb6a97fe9cade16e80f85d392c0e61c4b683918a425d9ea8e8479. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAFA2014269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d0b4faee591bcff5a9d8a1569a2a9fdd7b4f70e79b762067653f817b573fbc. 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/TCAFB2008350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1840a4e9a8f185337004d9eaae259a90cf74198614646af86b4f855c603c18fc. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:06:35Z), 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/TCAFB2073012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5971d8ec263fb8badb1dc0c4491201b3b83625c7a93615282c355b39ffa7298. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAFK2127449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad779f579a92b21c29780512ff209c3527f785eae717c15e20f4730882452a47. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:27:48Z), 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/TCAFP2109202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc263dc8a3202425818b3c73b2b154068fe36717fe3a1c262e784514a11899404. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:23:28Z), 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/TCAFX2109519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2962a6385e40c944188de7c32ff7cfd3b6101448c9c78401f5d1970a034515. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFZ72261313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675978be3b5a92ab535cea9d4c87e979fa5cb330f2cb35b68a78a608b25ca9da. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZDA82273344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d5c9642d8452634f4b808fed0079de99789f6dda990f70c47e3e491f0c9ac9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZK6M2277107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf99ff241174bed4373feb6de27d8b66a97a2627a0bd20de7d8330ea820dd1ac. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCAGM2290878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782e9c53afcc3ab9ad98867c3843b41b52220da1f37cf7cc57fe1bc0c9268607. 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/TCAGS2390708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde18e68d8afdb284d400748da98e83a4484bac2a4c2ccc3dcff1962bcf038899. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:05:31Z), 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/TCAGT2369945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd184fbaa1d81febedd68e6de7ebe30e6d4d64f369227f817e9e61faec3fd3e0d. 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/TCAGX2396598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60432bc9e00fdf5bd29b538d287c5be3a844fc76f3a9ba773b1ee448086ef2d5. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/NZPB12400249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e4009304770df805d8e845ab007368f1a660b80b0557993b55ece27d7ca621. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/NZPB12401425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daf2bd237852f00b4f8f1c646fff0eebfa61b8e797b48470c6076bc8456ddf2. 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/NZPB12403982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605a31af07eb5ca2994e56c9089ae4e43e68abc9561d54d726357d6a3041999a. 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/NZPB12403983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286f498709937705bfe645a558ea45561a40c59d896b39cb6728cb401156b14f. 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/NZPB12403984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca78ef6d13a054ae1920384e6d8f6adc46792321c9c3c4957c28800bd2840891. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/NZPB12403985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fd2549ea522f6c6b40b1e39c7cc083e06ec4737502f444070fd594e83ee23a. 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/NZPB12403986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5018dad2b9e89d71fe970f261114cd36d1460e6132c157354ff9dcba1b3cc95. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NZPB12403987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d880a13a5aefc66e836709c3055a75352702c758080591fc53b0604b2c8cdba. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/NZPB12403988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1328221fb639880888f7d05fb39c93b938182113f968005ad9bc452e854fe9c6. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCAJP2545893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10d0a35c3febc0a1892f84291d9c1376bfbf9784c752b1e592a5539a578398e. 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/NZPB12303496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c587e5585947fea1c0e8ffbd8f0d6907e2fec652816eb9a1d53e31e8a78873. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NZPB12203818.