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 0xe41e9d62f70c0ed6ef2ca3fe2e0acb11b3149e91fb919d0d5c312ed5940a3323. 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/2d76e417-31c5-420e-ab89-1cf7731021ea.json and https://artists.proofprofile.net/proofs/artist/2d76e417-31c5-420e-ab89-1cf7731021ea.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 0x9afc09f14956ac89e5106a5c7df996bdb7bc01ab51862c746740352b1941f3eb. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTV32570908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf46000f4edae603a701b14860c877c2b6b12069c6c8422fd2014fb745ff8cdf. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TCAHK2376253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9bf25fdf2eea73f8f39e45ea069454347a934d2cce56223eb6d070bd2b34dd. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCAIE2431696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadf5692a0bf5c1578ace0dcb4c5bdf23c34f6dcffa37367f042f470e70c9df5. 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/TCAIM2486685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd774a98243fffc3fd563ade487a45ff1f2f5adf7669e688c71adaa0fbe968f. 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/TCAIM2486689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cbfe7eca1169a61751aa108949a91b9de2707691321b291a9b6d5c9613fdb4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAIM2486752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c71bce30fd15c2195bb0b9fa8841db466143bd7f18b964128a2f3faaf353de6. 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/TCAIN2486755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d833ae2a929d847cc1876dcf183d5f7c508679401d720d95bc1bd0bd52c01bd. 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/TCAIM2486778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5366fc1f3c72ac0f965db395cb239cbf34003b8c49be70df5995ab9b79c696. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TCAIL2486781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe404992c607f31d11d061b4473ba86e4a1c403f76c9e17af982d125cc5215922. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWDD2556715.
A Little Bit of The Same Thing Every Time
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4b1de6a472c639230c92b525ea7f2aeb4a97d84a32364c3129f1051186eb1e. 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/QZWDD2556719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0995fef82f3129fb482f4562898fba0bd363b277d896777970e95f1fa31d0f9e. 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/QZWDD2556720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aef52a87f7e69e36e5ee3aa05fb62a4ace26664be0fd8c79c4b7501bc94a1a9. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZWDD2556725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f974977a54248974de3dd02a16314638bbd560ba98db95492fec5a71fc3e744. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWDD2556728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c414b1b9facdd31e82051aaab2e10472f5f05bdc45325f848b826fc486fb40. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:45:46Z), 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/QZWDD2556734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04ee6cf1fdc80b02518153d72f4fa56dbc9b8324e9fef3246d83cc8ce567a97. 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/QZWDD2556923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9f4cc4d6244589ba844531d7c1405a050c9e2c8c8f13cd32a4d7bbf8d2b081. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZWDD2556929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17eb597b89617324c124a298dfe5d93a42f9c92a08a41df966cd4b32a8f9986e. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZWDD2556931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d4b29c71c99ba01d19c8922d205de44a611bb03f9370ab2c0f7bef3ceb6cc2. 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/QZWDD2556933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d2b150157f20e6449367281ae959e810a0086c700214cbc914961c3de7496a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWDD2556934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee3f31a855d1926c87d2bb7e1df1a8bd750584fadb50e14c2df6d8ec119587d. 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/QZWDD2556937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf63ac17dbecf2f93ab2469bbae722d3f3adcb7b635a1a757068f40981e5397. 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/QZWDD2556939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2486c06c9d11841d218618d62715233949aa49e74cd339a9e40c90a43d965213. 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/QZWDD2556940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38ea97f21c6bdd2a588cb59117d737c4e9c2130d2af0b4f73879f78b53051dc. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZWDD2556943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df3b5c83452c3b918f8a4e287ad7e55f0aba8c6f29f0304234bd7049bc2f650. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZWDD2556945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb280861d3e779b49d40bfac04cadb720ef75b9b2990c590702c448f2bb10e779. 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/QZZ8A2586573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd61bc4bbccf9a47b737b51b9da56f719a6ef3e7be00a4e4abc360aa45ffd47. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZZ8A2586584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445f079e8ccb1282409966a1bee9680a8fb76430a3f39bc69f618be9c8e7c9cd. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZZ8A2586585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fd3cae661894f11ba96e86db22f6dbc62195328fc8f03edd223ae14570a221. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:08:34Z), 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/QZZ8A2588669.