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 0x49651a9073ecbebc5632a79aa44f0b52e60160468f4a49eb713f8912c907fa09. 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/995fbbf7-1727-42fb-a78f-99672ac471b5.json and https://artists.proofprofile.net/proofs/artist/995fbbf7-1727-42fb-a78f-99672ac471b5.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 0x6c8108cf532a7482e9add37ac9238ae88767b29ac71723e8726493e4c7f200b9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:15Z), 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/QMBZ91589675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a847ebfd602770fb39d80ddb6e8734ecc7c86ba08f793fe6d6c17dd76f34fe8. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QMBZ91589678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a91012312f782702db932f8ff60e832f6485c0eac40a06f53fd9d375a41502. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QMBZ91589681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641fea5f71ecd8a817b2bc9b123427a436dae56ca427e6b7462d17b1acab3436. 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/QMBZ91589682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f233ec5d6432148b77e2eaadb348009e1473eaf6618577b67732154f329be66. 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/QMBZ91589683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabf55f59ca0a09715de36dc5a63792afbf07f093afe11b8ec65a8aff215e7c4. 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/QMBZ91589684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e46b22d17600b6d2e3eca1bc4467260b4c93925200199b4e49ddc71fbde1ad9. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QMBZ91589686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070359000c3338115548f4e37288e47fe21ba32e41bb87ec781335677ea69072. 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/QMBZ91589687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8108cf532a7482e9add37ac9238ae88767b29ac71723e8726493e4c7f200b9. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMBZ91589675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a847ebfd602770fb39d80ddb6e8734ecc7c86ba08f793fe6d6c17dd76f34fe8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:19:48Z), 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/QMBZ91589678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641fea5f71ecd8a817b2bc9b123427a436dae56ca427e6b7462d17b1acab3436. 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/QMBZ91589682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f233ec5d6432148b77e2eaadb348009e1473eaf6618577b67732154f329be66. 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/QMBZ91589683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e46b22d17600b6d2e3eca1bc4467260b4c93925200199b4e49ddc71fbde1ad9. 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/QMBZ91589686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070359000c3338115548f4e37288e47fe21ba32e41bb87ec781335677ea69072. 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/QMBZ91589687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d59adcc694e1a5849d8219ee2f50793bca026f8833968073fa28840a720cdf9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:52:56Z), 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/QM7282044208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d101380cce65a99b4b6df40aa1ecd6e53270b7182159c98c9fc1395058b76ba. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QM7282044209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262cb21600b30c5af9782d6fc55c1396c3707c4f83b3d7f2c93176d4f8a2d031. 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/ARF411301003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd60d1ab0b435734a4bf09537094c289d27482a7ddf87d970f2b3e09054e92b6. 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/ARF411301007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4329795a0b476c46187214481bcdb9378fe62062c8f6fcc1051b6cadf57869a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ARF411301008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc713e48398f79c8afd85eb22e264e97ba9323cbae28dc32ad4b23e46bf3424d9. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ARF411301009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf57b55a8b3fcb18e1feae644292e34460329c0d106991e59b0b48357361d62. 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/ARF411301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12b0dd2ec9e0f9a99fb3a03c73ad8de97126c08eb47238d739a715d8d636304. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:08:06Z), 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/ARF411301014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb037506aaea9bf56350170b70721f99588d2dddd4740784b72a1ca925aabff. 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/ARF411301018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262cb21600b30c5af9782d6fc55c1396c3707c4f83b3d7f2c93176d4f8a2d031. 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/ARF411301003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd60d1ab0b435734a4bf09537094c289d27482a7ddf87d970f2b3e09054e92b6. 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/ARF411301007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4329795a0b476c46187214481bcdb9378fe62062c8f6fcc1051b6cadf57869a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:11Z), 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/ARF411301008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc713e48398f79c8afd85eb22e264e97ba9323cbae28dc32ad4b23e46bf3424d9. 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/ARF411301009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf57b55a8b3fcb18e1feae644292e34460329c0d106991e59b0b48357361d62. 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/ARF411301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12b0dd2ec9e0f9a99fb3a03c73ad8de97126c08eb47238d739a715d8d636304. 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/ARF411301014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb037506aaea9bf56350170b70721f99588d2dddd4740784b72a1ca925aabff. 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/ARF411301018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05615d3a21620967c6d27d073b708ed1a01a50d53af417745410a9ffc9cc4493. 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/QMDA61897832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d6812a8d90ddb24fdf161f8da329f5a4a27e2dc311f96aaefa38c4c842d8a8. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/QM4TX1806818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eeb253c30885a7a05c86f631e50ec1ee14afcea6fe61a97e3cfd59da5a8c70c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM4TX1806819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60fce7d2b6595a8afdf8ae0ff7dbd4b083ee7a40ac09d6418f908e9fe06e897. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM4TX1806820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f5bab8a421cce5b75b2903a1edcfae6964a82795c524ed804f33f764b77dc8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:52:10Z), 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/QM4TX1806821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e17889a92f91938d7cf1e6fc8b32e1465075d54b2fff880c5b8528e60af1f1. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QM4TX1806822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aea51bfa716394a89dddfab5a3dd6a4c179f7cef2aa2a8fc99736114f96b245. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QM4TX1806824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959b83f6ddc94fe008e801a2bbc5eaff6f8014fbe364ed59e339ae16008b2473. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:25:49Z), 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/QM4TX1806826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d6812a8d90ddb24fdf161f8da329f5a4a27e2dc311f96aaefa38c4c842d8a8. 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/QM4TX1806818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60fce7d2b6595a8afdf8ae0ff7dbd4b083ee7a40ac09d6418f908e9fe06e897. 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/QM4TX1806820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f5bab8a421cce5b75b2903a1edcfae6964a82795c524ed804f33f764b77dc8. 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/QM4TX1806821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2369a36628b76baa5b02645efd8acbdb4767c3c5cc9c7ba9b10f9e5d536e6d53. 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/AR6PM2400077.