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 0x583c93129f05eb4ca6405829155cbb825c87ebce28583728658b41e3937b1e06. 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/bf71059a-6abd-4227-8e68-b3b1e19411a9.json and https://artists.proofprofile.net/proofs/artist/bf71059a-6abd-4227-8e68-b3b1e19411a9.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 0x12b576a956a5e13870a6a5d029a56f717dd1e144a68c49e03e93529737380768. 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/USY280757795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95069ffff2e1e1efb0a6158adfdb43fe59bed9e33aa3cab35717a7c707882ad2. 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/USY280757796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad7f077e6942d7512ae0a43531d11c050c3a626bec01ae6cb919ab08227857a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USY280757797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e46723e517684126eafc134b58f927cd834a8838c9c5fdcad076b422bc9637. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USY280757799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee9ecf6dadeb54959606386ab3ebdc393b3510dcc802599e9fce14b2cb7bfe8. 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/USY280757800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466912a87cd174468e118c5ac12acbc8f9a2e7ef0a4e11cf2484f9094bd5353a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USY280757801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd118b5485b230ac2fd0972a03a95f5edc050715408dc42b2560f24678a918c0e. 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/USY280757802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd35d4e102566fa7bcbde02caeea23445a92f015522c6ebf235a01d47f4b6fd0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USY280757804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e18413a126a2614e29f53733cf2af2c0dc3d219fbb8bf34c949ed154a96328. 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/USY280757806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae28ce722d7ba06b938313623aab15d9b25b82d61eae8a67f7394887bf2a5e2. 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/USY280757807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db9881f5e2e6b3460ca0637bd36d7bb2a5e3c320f9a8d3402934ecc51a41e2a. 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/USY280757809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4612cb25c7a3d1ddf14460ba6a6230bee48663fd99aa5d96b087b0398800d34. 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/USY280757810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf024f1a96dde4c80622389c56d4a26c9d9119ed46dac255b180d1d682d0050f5. 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/USY280757811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b130b440a3c2f6f6c02eddf602ac2a47b06cd87ee28f5dede760b724c993fc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USY280757813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c48eb66f2e70a83ad406543487af50ce3c64921d6d267c6d644534c8e576372. 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/USY280757815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd73781132aeb71fca3bad6da0181ea57eca15893f87cf346bdac0e8af8b62e5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:43:52Z), 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/USY280757812.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225141e65d033ce899321bfafe451da9adbf9c44723f1a6b45ba69b9042f298c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USY280757798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96110c1d8ece71f929f9b03c6773aa67dbb9b9e09c827a5800677143d7b19edb. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USY280757803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e4ce0d5ac862681848aa0383927fd09464dace37b0cb3f523a1bead02f3265. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USY280757805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f8531bc6e016d40e53d82b00d2fe17de6d2c8bcbae8ee0aa36ec0f4bfbc2a6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USY280757808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb60ddfa785d122e8fb421d80395a471dccae140f01ebc1952b0fbed7146b57c. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USY280757814.
Amazing Grace - 16 Traditional Religious Hymns
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c64418deb13ec7aa0dcf84863b5306bad90a62de12a6071681ddfb550b0041. 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/USY280757816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5d8d441cf484545c08da56be0f2864ed6e86b4d3da2e33a80d1233681b2bcb. 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/USY280757817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae00922f4d51a7dd3edd4f57a87eca8815551bed982add91537a9d2e592aba18. 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/USY280757818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42687cb220165c7260c6b45aea3378a0314f8a4afa9da74886fa593d3184f18b. 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/USY280757820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf52d0f6b46981591b23f037696d23717bde78149d2ee5f9eea24d4dee6ea61. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USY280757821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf524d529aa3183e00b747529e6f3a39480a04ab3acfbcdb112a11f8396d9dc7. 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/USY280757822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566e25e057c45a0b2ea22baf14ed8fc85d51f0e7452edc33349e67bd267c5a89. 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/USY280757823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03102f3902dac18d5c576541ba50ec43064cb5a99d8785badad2dbdd7574054. 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/USY280757824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc21e94508bbbb6205cbad2ea224f2e49ab6ec7dd3d2deb04d2a7c067ad456e. 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/USY280757825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b66e00d0a8027042767c507895573b0beb5ea402fbe27f76f0118d27b117b0. 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/USY280757826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcfb5577ce6074a8325b8e4eeaf45236b627cbe380acbf204e56ead08554265. 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/USY280757827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260d261c8e26b7049dd46746385db74701e43aba84abfd43971e51e93c532a70. 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/USY280757828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86fc87a4ef95ade9bf2016a6df94f8f8c1817d2f00b7724efb146938100f324. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USY280757829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e25298a92adadf962c5d3344fa22277888244319f848ae03525fade1dc1bc41. 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/USY280757830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51c3658e14199f932c1426651a3caa541818b7b4798cab4d7fffa149cd6cb7e. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USY280757819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f63f955c0eeee739b51d29a5aca0527421d67315ca35ebfbf69e3fa70a8160. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USY280757831.