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 0xffae1a1908a2f2973b788768f493214198bb632f51bffa14e01e04cca977bc70. 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/ac0af32c-9237-4eb3-9226-0868e46917b9.json and https://artists.proofprofile.net/proofs/artist/ac0af32c-9237-4eb3-9226-0868e46917b9.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 0x6120a1e2acb087c385a43daf07e1348137d89f20f5776657de7d72b0332cb0c9. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RSA222010607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916252a9cdb5065f28ad543ff67ba345b77f0abc955a67086344a5069804bd1c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ATAJ12400563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aecf79365c38e08234e6da5da105ebd0195112bbf55091452a531789d3c7819. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:28:18Z), 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/ATAJ12400576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a8a0b842284592437461df587ac00dc9a636c6381acf3fc2dbd31621ad395c. 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/ATAJ12400577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177eee7ef43445641b040e5786adbf31e5a6cf375a9984ed59aea3492c02c48c. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/ATAJ12400578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1da0bc23d634862765dff39b8493d10e227d3506d1853d76c6e2d3d5ea10144. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:44:16Z), 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/ATAJ12400579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8589a42196b2c01db83243e3037b9ffb79db752b7bf4ac38d6d74885697fd765. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:08:15Z), 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/ATAJ12400580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7822824455b570d443f23d812b55f5a0ea483afae39b5fcb9458b70e86d39a50. 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/ATAJ12400581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad155546486f8c648434b5b193004849458755051213d52af17b5db54a9b838e. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/ATAJ12400583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd702d3b0a30f2a78600ab4e9ea5769090dd3ae0ea919f484fdda2830f88f91. 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/ATAJ12400584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f27bbda1b4c6f4b3a37b85e81cc341b44e3dfd9e3b1d5f8a8a5e4a24710320f. 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/ATAJ12400586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2f5ef8f21b1c0626f830b1d7f5ee4597b78472ee47a097bf16e53fcfa22e8e. 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/ATAJ12400587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4209729497cd35e10ef479ef23cf8b8ebce7a7d2a3a18065269a474e6ad60e. 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/ATAJ12400564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5a99aa939ca135c31062cef56798d713c607dadff98dd1bc9f1eacbb2ae68f. 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/ATAJ12400565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6469343b1bee2a999f1e400139d9d9f0ce74085a85d9b3ab37cfead67b632ac. 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/ATAJ12400566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13421d7f6f0702a1f7bc999c31d504d48b1831ec70c3f6891dd38cadbe65a04. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/ATAJ12400567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897b8e070021c4158eb550fd9f4d9f59f5a5a28580cc8bd10c520c38c1b4fa1d. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/ATAJ12400568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57599d2508fd500dff2c21f338cf0d1514f79232c8c4977a78663b389d18991. 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/ATAJ12400569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592cef37cbe5b42add10d53698878c4db9fcc51a284db45de5d3c4917d92e262. 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/ATAJ12400571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7594082a9788fb10cab2c4e4ab32407a92afe76ecacfe340eb9bdbbba733b081. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/ATAJ12400572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351b8a19dc43c344ef29db1913110e6f09c0bf5d396a367326529b9605d559d6. 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/ATAJ12400573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c93307343df594e47659d13c5e6a5eb909b3f0312b67fdb317adc035e28bd5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ATAJ12400574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11525c03396e87a5a665672bd29275ba5f5099f337726578b51e0707aabe2c72. 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/ATAJ12302725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a63e6d81c51fe944a2bd0045683686f69eb15ab0f471088af0ae607f3fbdf3a. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:05:02Z), 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/ATAJ12302728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725fc5bee3a19f2533289063e6c1f231340d811c3c91ada0617455a1c80d9087. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ATAJ12302729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf79ad047abdb6425a722db797efb2018e8a654e96ee9edb6bb834f722d8ff2e. 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/ATAJ12302733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310893d35b66aa16670a2df707f9841b2cfa72ed58cdbcf0b06a4313bf821456. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ATAJ12302734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5bd564167f451fd10f836204db1c8d6bebf5119cebe176651c8a0d50fd8738. 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/ATAJ12302735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa09d9350000f8c44d8add5841362374261cbccc757bb235e7a7e25917d584d9. 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/RSA222310655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbee2f9769e738222f00ab76fe1e0c5a2e2b000df62663215dffe872d90d3af. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ATAJ12500140.