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 0xfc6c84026aa4cfa2c9c9bdf0c421dc2dbdc79ed961e24780bef8889d50d0d098. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c07b047-87a1-45a3-8493-10e75455c84b.json and https://artists.proofprofile.net/proofs/artist/7c07b047-87a1-45a3-8493-10e75455c84b.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 0xe1aaa555e543455ed1bbe64a6eddfaddeb05177619740ca775c4ab6613436f4f. 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/QZGLS2336191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8347fc0f997184c69ab7d6d979110c73149d2ff5310b5b9b4665dbdfae86d1a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:52:34Z), 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/QZTVM2355757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ad82fe75a74f606372e81d825be6b8d9636621d5a506bee98d6ffaa2bc60b7. 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/QZTVM2416752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef69a462262f3aec03955071b46a72b40daa755a64d861d553d5e8f220a14f0. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZTVM2416753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193f3b9f44dfe9b88cf14d1c49e4c9ebde77a3f79866ec33451b795c6a422946. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:19:17Z), 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/QZW9M2450005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65a8dc891ab28ef4b066194c2ab299dac3ddadbd1164a4b70f8016d96abc3d7. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/US7VG2546362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4de85b3efe2975cd44602359a036449748b6744a5d18d39930f794bcf133d9f. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/US7VG2589948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce5c97783ea2608fa1d739a58f27d38f5ca2dc9b37a8d5e56559ac4193c9f42. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZGLM2542615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d09cbe294a495842516ffa80a11e1b71546c2a4272825ae7ae3967ce82db35. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:44:26Z), 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/QZGLM2596756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eead49f548b8d1d215f55980c05e644acd540a9ec914039a2ae202851a5da9a. 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/QZGLS2539443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120528f5371441396bb6e13eff114e6d25a3557967b106005a26ea7986c82e01. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:00:13Z), 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/QZGLS2565606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98281bd4c745cf9b2e68e248167739e04e68e43e4b7c890df4d8125867074cd7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:24:54Z), 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/QZGLS2591898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfab95f6097b6801c6fc0c7f055904d1602112b59facdf0676b90cab6ea45435. 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/QZMZ92598581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672390205f9b422b9f769b2e7979c940bb6ec70e3d05d6bb37af4e85fb7c93e5. 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/QZNJW2587206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dd17649f72225b9150774df4450da39d2fc5d3933084f558c2ae76f7b87d3f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:48:49Z), 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/QZNJX2532732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d7a4a649064e9117f59d31835141cd224eff58c21aa18c3964ad80ebff1a1c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:37:26Z), 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/QZNJY2525007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18edf277505ff0cefe3fecc884a5f53930a546d41c725f683b1b7749241928da. 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/QZNJY2597810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe398322381067f20db93d74801a7b0d43155d5df960a121d79d55012ec36f7f1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTPX2540630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848a9fb03b745c608cc7e802d0a3557e431ffab0d680ea69bd42c27ad4d6189e. 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/UKZGC2501058.