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 0x75f0f48905e52a8dcc000ab37679a8f413a4c6463f806a02fce0be8d1b7f98e3. 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/89aa47ea-ddd1-4d4f-9a5f-fd42cc594141.json and https://artists.proofprofile.net/proofs/artist/89aa47ea-ddd1-4d4f-9a5f-fd42cc594141.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 0xdcd6d73dec3bfa0feb2d17e3e1913d6dd1dbe0b1bedb223b57e9f6169cac4d31. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T23:01:09Z), 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/USNA18415062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c6d03d1a3e709de470b0beaaae3b92529d41604183fa487b4155c826846d18. 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/USNA18415063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e063ebcfdcc888e5924496fb361a928aa8f98e75c229fd30a1cfcf93a8a4b4. 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/USNA18415064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291e9d817e07b7f1fdbaa5d6b8e129b4c102611c6544b5ceaa528b41716202cf. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USNA18415065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb741a9fb7ff634e5d9007adf15a6b30d97f631a3aa955c5a7bc196a9e41c30a1. 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/USNA18415066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c151a6abae077abd09ba9011a4426f5c33f26e79c1f40a93e24782f37776cf5. 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/USNA18515042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c73525b13dd329031fd8a03076d3fc8203f1f5bea9797c7b626ee10c8e572c0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USNA18515043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5393f1771216f5d8c3a5e28415f467339f9f3a978ac8ca5293c5f42ebf010521. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USNA18515044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f5878f648df202bb69fafa7c693cb31f7196b47e1a4c27136981abe989bc7b. 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/USNA18515045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc1e3e5c6a068f747a087ee2f0c5e291d1f0250f6406432d49a56c4db80d1b1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USNA18515046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec55613ae7e3a345d1c9ed14ac6f56c971a1885055c30b05b4d28ba5be65b08. 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/USNA18515047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037144bb8259c9deb2a4e9d7febcfc361f0f289f26f18ce5f7f130d925b1f3a3. 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/USNA18715145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5a0d5fe046db39969c3e5853da478f37d3a38e0f0cc1b985c886124df0b029. 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/USNA18715146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa671683e87dfe98fdf4a89c6ca0f12c3bd42d63706550d83e0fc7a1b8fcd4cbd. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USNA18715147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d98f7e24a69eeb42a0b5af5049bcfd04fd0c41e7bd03007eaa4d4f5e7637240. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USNA18813662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4362b0e415ae15eadd328e54cfb6fc0e65bb1688364adbc1f3a46709a47ab88. 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/USNA18813664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8428df4afd2870c0a0c8a408492ff9e2254fcf41245ccf928b79f34113f9b89. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:44:52Z), 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/USNA18813665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdd8756db599d731a45c545b8be25e6f3153221637366dbcd35a2085f1d6333. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:00:14Z), 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/USNA18813667.
Michael's Music (A Michael Jones Retrospective)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b8bdf0e4f6210c54165bc07e765f7909f7b9360523a2a2ad73754932fc4174. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USNA19615102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf852ec028a6a34cc7d1885ae7cd0eefd940d6ff6b09e813a0622e61b150157f8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USNA19810564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dbdb4512b1391b70d49b0ecb6010033138aa78bb366c16ce12ef8d89922186. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/CAJ250200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8d8bbff4a9e74fbbd931bf2bd9eecd7fcd20ebbc4d6cd014980ace1e1b5c85. 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/USNA10218866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e946ba5c345927e1e635c820f30c5b3cec23b250b619407c8e382dc69292445. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:05:33Z), 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/USDY41501208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8a6b2dd8958925e4e076b0c133cde54342ef20d7294e39062cb751869c91f0. 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/USNLR1200196.
Narada Decade (The Anniversary Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c30f7dd49e64111c96b0396cdabe0a8e0948a18b43e1d537eb38540676ee6e. 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/USNA19311193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e07a96dd4600752b16fbb79fdcd96da8c2998b0df586044546f8c1b98329ba3. 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/USNA18812222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84092de487ddb069e54884a5e5d3cf2b1dfb1f5378d5cef93d3f69069738b188. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USNA19012412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26f1a572829479710eb682b0792a449e7305a4a63f61d701a2e7c344495890f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USNA18712162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42439e8b036b0a250e80bcb28289fab2cf9c42ddc928c4a9b13a757622dbbd67. 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/USNA18712166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e98ccc7aa3d6d7abdb2f0cabe40222fc662000a64f56a205693496e26b1cac. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USNA18712171.
O Little Town Of Bethlehem/The Holly And The Ivy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12af632997d7da6938c66647b7f0d3e6998cae788ffa235b3c918c0775dcb4ef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USNA19815235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbedc1b950b096f20b1cb67bc71dd4a031cdf9d09edc2f7851ca14e9a5db2fe3. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USNA10218728.
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 0x2118d55535046a6fa97716c9d856781661195a230a18d9135cc282ddb07378cd. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USNA19212389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad46836cc754dbf9956bdbd18fd83b6e6944d8863832360ce31cb3524c804cda. 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/USNA19112268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2304e91059bf3c4c3b679881c9496378c1994d518d752b33f11b44ded7f41c7d. 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/USNA19312288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f4b577aa4096a5e54728758a7821b009f4f373d3969979be623519ed31934a. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USNA19815214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9288c3ed7bcb8e556cbc337959aad8bcfc839ee5eaeef007edd774d531c83f0f. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USNA19213593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba31e285ee64d61205bc842f8570ff7a8ad118e23c9ba3891f4985d3b2fadbe9. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USNA19412333.