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 0x75cae8ae9b23d4def0bfc822683dfa5c5af24e95d9e926d17a1f600703c15ff9. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/587961ac-3a00-459e-a6b4-2364098a4114.json and https://artists.proofprofile.net/proofs/artist/587961ac-3a00-459e-a6b4-2364098a4114.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 0xf73386d021ba58b9322ea02b89e1efe77dccb4d94ea81f907817edf76d183abe. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GX3HH2473108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f166c0162fcaca6033ea6bc302cec569c520c520fd0677393fcfcb61caa91c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GX3HH2482915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2334ed9835aba44fb536907e4a47a1163ec49375d1387566826b16ce8e681d26. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GX3HH2456117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02256d96a71ae36795ceaba3725549e91d62d75701fa0b38e12dff044404af65. 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/GX3HH2475491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9a1f5141fe7b60dffcd943f8980c2f1da4c5fd8199a105598b8189c7949da4. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/GX3HH2494217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6e2e98887303a258456a1898a1e1d5ceb76e9b4bfee100eb96c5cd2aeefaf1. 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/GX3HH2449110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b8032fb0068b167214bbe0fbbc44b6f11cdeecb6e98f2eee884688856e0a3a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX3HH2400574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051eb71f614e6e447313be4d089e1de77d4629507aa8a366910f700912762496. 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/GX3HH2442063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff71a371083698836f642fae7f022ea486d9308ff7a882179b1383a6bb78e13. 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/GX3HH2499225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc4051f11b2c408efaf17585f47c1a2c8531b5302cf6691064cee0dad42a847. 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/GX8LD2567465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa920462a49a7a190a0253a9ecf2820b138f547b55fbe5983299ad9ad5b65e4b9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:52:47Z), 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/GX8LD2588100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a4b2670b3c672ff540bc22d7434294df4387d1fdefa1ae40e0ea74f71d8994. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:54:47Z), 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/GX8LD2512496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf501a12a5b5694250ddebd1bc8b5f1d8607fb827d1e4cc2f646f4c38a71a888c. 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/GX8LD2586613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209b7c2008cb7e636f70bcc3742414fa6d8e837ba866539bab08edada0d0bd4d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GX8LD2576918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fcfac0c811dcfd8c91c8917132549e7db2a33132e67fce47a31c2e461db343. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:43:55Z), 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/GX8LD2545655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2c20e555c289d36b9bf86cac3b53ea245283e99ba0effa6660095bdec804d4. 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/GX8LD2557540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354198dca592fc548ab76f883948d6fdea220fdc1944c4667823af82a8a7f2bb. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX8LD2572784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3c438e72b08e8a4fef14248d507277d527a537094b352b97576d3e495fa776. 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/GX8LD2572573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d393bd595d98bbe529df4207dc8f437413297f4342851abf8e72b60ee6920d5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:24Z), 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/GX8LD2552174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdaf81e32b30ef24da8e623ac8675028fdb909ca6c75f6e3b7594651398a606. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:27:05Z), 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/GXESV2599515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da7ed81bfdae3c35c95832339c2035051f342655207f105403c5d55c5227ea8. 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/GXESV2599259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbec372b80b42221fb35d5d3dad2d099fddf846540c1c67464c407fd8ac24e2. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GXESV2561410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50454f3403a88f49f73c9c487666b77c7a31b25f951e463e4b57cc7d0730135d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:24:02Z), 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/GXESV2536147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03aa0f1f201cce50255bda21eb2befa59fefdd9ee2aa8b686906cbabfd4e1dd. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:17:57Z), 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/GXESV2521196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe513471376692a1490dac09e7ddb7934e4ab3c852d7e3fc18890ae71614c5f23. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:10:47Z), 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/GXESV2520509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfddf061c6e1094d99d26c4c63a2910740ccaf80f17ab85f48081eb3560fadec. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:02:11Z), 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/GXESV2523037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0521c8d10643d2438c297dfbf15c05ebc7cd466c2c4be058ce70498ef27687. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:41:05Z), 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/GXESV2567860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861eeb3ba976416214883e1f88d034f8767f59a464ba3a813d4f420aa3fd0179. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/GXESV2584489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27547ffa759e938e4c1fb436232153e37b380e650fa18f8af444c6278437f430. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXESV2506821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477706a64c1bbdcf72288294ebedc61824f5aa7b05e9305b7ed85cbe823203ef. 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/GXESV2537218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a8d7da61e22f3b4f80ca0f9ef20c72d676f965968909e2e81715503f19afa6. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/GXESV2531747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583d099930fea23cce18b0181958efcca96778c8e4c87d2b5944961e3a0c9281. 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/GXESV2508336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddaa717e5cef78dffaee95e484758f8abd2102efbe0ba4dd510a4046cfe348f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GXESV2594720.