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 0xa0db7e20b6b7b7fd64642af782bb0afd030ec5a115785df3fa675a855d685312. 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/47b2f96f-2360-4292-9f79-81b30785fcb1.json and https://artists.proofprofile.net/proofs/artist/47b2f96f-2360-4292-9f79-81b30785fcb1.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 0x3d13bac8ef45f915d15ce616366e01bf3ff08d5b33c27478e7f608739fdd2435. 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/QZDA62336044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcf4ed87e4b0a98f16f2014e5bad93af317c3c4eb77436a5357c59e1b9e74d1. 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/QZDA62331203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5cfd3066ef40a360193753931a9651dd8d9104ccd8e82b8277fc8b71710769. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZDA62331193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60b40435915d88a173264c96e682444742d0d38a03dc3771c200748269211ca. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:46:06Z), 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/QZDA62331198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a6defcadde5445238d1ce80e69dff1620cfb5a9e4874b251cb7f1f063b3ca8. 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/QZDA62336014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8708656efc7462dd408b72e0a0cc5f4622c1efe596e897388f04a60e324f7d82. 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/QZDA62336097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05712aae13c88d27ef9f882ff01c56a18ae018dcc770de6d5890daf1c2890bed. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZHN82328485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece03226f2ca19ec36d5c617a3282860e04e4830900d9dc2e548300bed7cf18b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZHN82328492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc2860e86166d581dff33e8e1d8fd5c993ec25f459dd440bf44462232a68a43. 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/QZHN82328487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800105582d14b81d598487e1ce7a00d2a3790c7510ce2d560958d9ee53f97b84. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHNB2398540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d2fea23ced2fc867cd34cb44adf4493586358849d4da11ccf1c194c1367d2f. 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/QZHNB2398546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a1d9d571b45488855aec8909ccfdad1d542247677be4e0a12faf64b4800f62. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZHNB2398547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf122e45e2689706e01249846788d6ba8d315209ef39a22ff7d80cc015ce4c49b. 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/QZHNB2398543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb23ae81525164e0a6520318c63d89ea42fc788513deb94a2a4cef59044624b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZK6M2314057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa0a2555087097934fc3212172982781cf4313eab4d8f8a824273d66ad77c00. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZK6M2314060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbef18b5c5df661e5fd29b0bd5fd5c1f704883f62a2dc7cc4db7f0b973c0312. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZK6M2314063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d8d6689ea26d1f2cc29358ff176aff7e9c6eb768a607033188d4c1c9bcd6e4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZMEQ2329001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b626b0c2dcd952c3471dda941013ecfa72d312d5fd0648ccd76615b9a81cfa. 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/QZMEQ2328999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2426aaad43d84a028d1fc18e61dca49148d39fdf0318b5e5db3c38316d9521a1. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:39:58Z), 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/QZTAW2396216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78fa081426d8fe9015d3aeb6176a17f39d183ce047e50787e2c1e133972f5d6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTAW2396218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9b9bf903ee069a68bd655859bfe55f619941b0b985f8b62ceb0e048e3abb7e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:52:39Z), 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/QZTAW2396217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f556973017d7df7226c8f03ae58b072604e24a52f1232ca052c0215589f30a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZTAW2396227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c64633f68c143bc67ca75b3756611dc10988434feb757baa37ef28f96703fe5. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTAW2396219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bbe277b3ef607dff51feee52237bd7329b369808e9206affa9fb1402d7c96a. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZTAW2396221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf15d182eac71b61ea22d203d57f3d2359b4f2a02a5408545748f0f3643fda40. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:09:10Z), 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/QZTAW2396220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a76b4a06c14a242f1026bf2c3a573e6ead1b043cc0741472652f4b2af89fda9. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZTAW2396226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbd423f73e1d70dacb6cd894beb4d550728fa1cef204b15c733cba2104c3543. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTAW2396224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337ffbfdbb6b495d1cd0d43c71f13c8e9c950fc839675f7f690065ea1aacf9d9. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZDA62331202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d0dab6dbb11ced17d71f0abc753ece8bf981b7c48c659263d2c9cd4ac22771. 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/TCAJB2476860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d2d7918c67cbc3da4c63cd7fa38ee97b618ade21031b123e4b9923879dfe91. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJE2521818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfb4e840adf5643f5f3fac21655f1b3ad674b788224df7b0e3a814e022f5255. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/TCAJE2521841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075b5bd5d348642558d7f1d9a820b6f362dad2dc44545cd9b299b68a448877d4. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAJE2521967.