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 0xe1d5f83ed739ac16a47728a4387d88d4b306b1fb519eda54361f28e408210f98. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8747cde-7738-434c-af20-f1a7ad214404.json and https://artists.proofprofile.net/proofs/artist/f8747cde-7738-434c-af20-f1a7ad214404.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Recipe (feat. Free Ackrite & Ray Wright)
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 0x9418a73fdba8219bc09b2b7cf1730cd383bcc31424508f3ad699af986dec60af. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:03:38Z), 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/TCADJ1778413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98946b1d1fb5f907436210d1156d7dbca76ef7edddf796ede7d74a87482537cc. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/TCAEZ2008867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672f644b21bff70bfde66a7ba637bb653abb01053bf8f2f9fd642960e10076cc. 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/TCAEZ2008877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd85cfcd2ad843e6111f183a6a69b78682c60bcbf1fe395e95e27048fdcbe58. 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/TCAEZ2008880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68e623ea16df7fb386b6bf83167c8f31a4c3581a2a8b09de261997c5fdb0ad9. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNWR2108581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1649e02946dd4ee330574f33d5f846de02e81c9e20982cdb661c7697ecf41c. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZNWS2244631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b2ff40f2020f383e4158cb77666c9b4651009afa64f5bd204c2ad362895711. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:27Z), 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/QZTAT2229770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b79133ffe46c1698225a87ebe7ce1e7d2353e89974be60004f27a5de3ecb84f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTAT2229773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8817ccf1716ec8f356c45e1f0bcc313cfc6985f6a8729c6d3e3314e4d211011. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:22:09Z), 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/QZTBF2394509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a53e41e4bd6f141542faeaef487942a92ebeaca226d2440027ba080e737941d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZTBF2394510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da556c6da7b3df6adf7b667c18e8e4adfb693f6791e384923c833ffffa11bf5. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZTBF2394512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e745ee889f115facd3ca407be1219b2244afad7aee9b10292189c71a2fcdc3. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QT3EZ2475939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79619ac0f341b0eb196e43fb70a1c1efef7796c04b647b06fce5fc6c684891f0. 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/QZTBF2394514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b81adbacdbbf1012f13932a60b3cdcaa923b34689204d7e0c2822e1890c08a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZTBF2394515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa063922a97a8951591f73119aa04fbe1e530becb71a9915e364fc1bac1556bc. 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/QZTBF2394518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65778f410249b9c63f89db5ff7863872994a442229bf31a90f071df22657b9a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTBF2394508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8e628499be54183d4c48d1731ce9ee60dd4903890f4e4c4dbd3549cc7dd325. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZWFQ2409945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d723cb437f77de5bddd863aafafb8ed98800d33b764b0a330177096dc3cb80a. 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/QZZ782432407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe622ea835d45d1d92f026d8be4bf1a3e36b294c5b9d95978ceb94061615f23. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ782432408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c039a5910593a0879221801aaaeb2beef3577cfe903a6cbb5863c995369bc5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ782432409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7083e6adcbe84d9e7b9b8d19ac7a03dfdf194d4771cb3fa1fdf2110641989fa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZ782432410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec85c157bab906259e0f4ee76a652996639195ddf0ab03df20f969632da326a. 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/QZZ782432411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6a01a5c0e2dc2527ebb1a23920ba301b64e1d703df7f54a944ce93e700a54b. 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/QZZ782432412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c434bda642514848103d2d4925cdde587d810097114486df5b5d7756e97284. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ782432413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c791d60e5eaf7de00f92b02f760f850f826c9d740e2d067c534b1605f97fe71. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZ782432414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59839604c91fd2a559b5cbbc0f80d0558d81e564bfe2d71622419e9924a3a1a5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZZ782432415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bd4028941d4b89c63f783e9741521729fa2be2ee6ad719e3f5902540ba58cb. 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/QZZ782432416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2ab0ccfe92687b54c9d8208ea2de77f8e56982ddd27bab8554bc85088ecb48. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZ782432417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4bc35c10ad7aa6623446242807554046b4c3a0462ee23609286ce4e8ce8392. 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/QZZ782432418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929dea50889ab6e0b11ee61df8e9c10d80a9729c0e061903988382c96ed3554c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZZ782432419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1e96d029fc1721d39bcabb284d2cb235c6a49f2522c6dc9d5f540bed6a6bc2. 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/QZK6P2531711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d9272f5938c28faed5eacc51de9b85b78998710240436f3203f281ebd22b03. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFME2325404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc2cab575d2fe5456ecb44d4acb4f43a474bd7b230cae9e544cd83a830adb5a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZHN42457427.