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 0x59162087121d2e46155e8c7bcfc46bd0c705283fa6fdaf5b34fa139756341b65. 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/77bd9e65-0bac-4b44-9dff-6f4f888f882e.json and https://artists.proofprofile.net/proofs/artist/77bd9e65-0bac-4b44-9dff-6f4f888f882e.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 0xd686b34e5536826a7c69b1c1d22f54919b7a6dcb4f159922b2bcba31fb1b6278. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6Q1983573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bfde4df4be072dfa854169f53b0101eef40fa34bd2e19e89a25cbe5159830f. 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/USL4R1943143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77410af538596a5658f0ac372778d918cea47c436636ce1948ecc7ee273c4467. 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/USCGH2038202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668ece2dd646fd2a82276a0c4861801c90db03124a7ba69ffc76bcb025fb787b. 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/USCGH2038205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2432db8a2070212e3fcac1c76af34456011354fc65819b4bada841c3be376c1d. 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/USCGH2038201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82c9bd0513aaaef2545635c1e719d7a7c849d8f7206119bf35a50bbbf234834. 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/USCGH2038204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548b8515b8894fec568bebb65ea2fb9e9048cfe5307032a33421f334af9e97bf. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USCGH2038198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7adf51d28021fddea7499f6123a57aa93ba6d0621b3b8f34a519df595bd13a. 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/USDY42511862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda8759f7ffee60c1180cb3de30ff82be8712c5c53b13a79b61f5dc7a460d4d2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USDY42511863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e02dfc2d4644e195114bff7ecf026848deb37680c0ff88f9daf81c5b940e718. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USDY42511864.
Medley: Mi Libertador / Coronado Estas / Llénanos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9a49c55008e9dee83680b2c0343547f9f56a116e132f5a25fd0e04ffebaf8a. 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/USL4R2145205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ff93f1e250d545da8b12d323b9404eac405ab1ebb422d85698f783d5681c7d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:11:39Z), 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/USL4R2145206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7922b9c9e43cfefb7ed99573cb8d6e32a783b056370124dde20c6da8ac41a4e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:25:06Z), 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/USL4R2145207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa530d8eafbda8fab60a0aa78680c7ce68acb575fa83c341b589a338bcfc16248. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USL4R2145208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0017743b7561c86de61813820b820062de428ce2e873496eb5840331c945fc37. 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/USL4R2145209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dd4f21c37d9d05d7933071aa9fada12a2aeee9a6db4657e43e02d84b98b646. 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/USL4R2145210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebd8f0e3f5abb0d82d5b256d2c7c8010961484ccf6fe4156524a286d41a5446. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:45:29Z), 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/USL4R2145211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468736bf3fc3c7f82d7784ce1d122a1fb785bf6c3d63474f3dab9685eb2cdefe. 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/USCGH2352504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0ca16b3de431fbcd8843dd9506ba454583fa3ec7606ba31f8bf7c782041368. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USHM82310026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2289786a10bd86ad1d7f3b9823cc8071242b4fe280c7d27eba019e121ed6fa93. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USX9P2354252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb964282f7f6655c0f444fbc6903c7bcdae02612e09acc3f282fbe38893bb6285. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USCGH2414352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5ac79d1e38e5f28e0bd55b55b84dcf08cdd07f0ca833a7c86954934fc53420. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USDY42402855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e19beb72d79c03ead0738d588338206a539637d660d11246c12d0cb652db72f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USDY42479157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48a7c4a732f923ff5d0ee919d24ebb37d0b853c61aedab2d036353714ba5dd7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:05:40Z), 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/USHM92482430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f774c2ca0625049ab4d26ea36316c5a1397298b24d57b6d834a247dd8642125. 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/USL4R2414506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ce947d40cf447d7daf850a88f126ca7e6f19502c0750668c8c225353e2f2db. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGH2501686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b52f235a7d9e806d00d1960295c2c3596f6a3e399f1d80ae9f7191177d0044. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T03:01:41Z), 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/USHM82512317.