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 0xbe59595b9e9322ea4e7d6faef6edec7059fe9abb943e1dac066a618cc71b70c2. 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/33234e6e-4714-4287-a756-5f4b530d9f37.json and https://artists.proofprofile.net/proofs/artist/33234e6e-4714-4287-a756-5f4b530d9f37.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 0x0afb82591d13d61886474f37b00a58ba0a4d286bf9e3a5e6a0915337b2664260. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:02:00Z), 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/GBLFP1604858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a84b9eecb76db8eb3baacb4e24ec2cb068913466cd1d54d3e76a0eab6d31692. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:35:44Z), 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/GBMA21879879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e92282f9620fdd7f534e6f3d24eaf6dc9b0b5140a758814507aefd7048461a2. 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/GBLFP1916651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f786501cd200db604a3a8a990989d262d9e206a7d6a51b0dfd16ac14d53b330. 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/GBLFP2028021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca8fc182f62cfb2002dfae8786e14f8bbd18af74932cddc2b9d0603d4802a51. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/DGA0H2355399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4806e9cb6683f76d9aeef3066e3ad93c8afea5c2b464f058326b606f25c8f93. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DGA0H2355403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933410132dc271776cbe1a45aafc28442a30e3af1f086fb47778b56a67830a21. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DGA0H2355404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29da8adec8e9fb97105cb17cdf8b3afbebca5847e814048586a8537bce7754f4. 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/DGA0H2355405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8823ee317317e54239ae9e0a9cc25ccaebc37490061605ff09abd1dde7fc94e1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DGA0H2355407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfdd45d854ffecdeaa2affdb6326a2cf77d7afdfd6939076690d0458863b946. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DGA0H2355408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8786ce79094516ee5763cbad90815e84f5494ef98bbb926c5bc8f20f7f5d3b. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/DGA0H2355410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e200deb4ad407bedce6577cbd71e9af4dece35e15ad1ca021e093f4151d2e2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBMA22132516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d31b0c0c1573796b1202b090fe4e92196137aa9648b5a78e256bf21e501951. 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/GBLFP2259607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34684c6b9aa7bb0eacba3ef43c8b35e05f64fc648b6d2252a42594c7da740c2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:08:14Z), 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/GX3Q92317476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5c3c023477879a7f7e06dbf017d59caaa9a0e40287bff3e8c27106e0abcc10. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/FR96X2478301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0557fbac08881f56bbc82c040a3176145b89fc44b32b4a4a08f54510a9f902. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:23:44Z), 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/FR96X2478302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf7c292013c92b0a9f8c7bc2be7de1fe554f0b9395f5044332d857c1fc4dfc3. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/FR96X2478303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abc259bb2f77d19393aadeb0ca93a5ac083c9c8b7b64b2abc7562cbdb7e3203. 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/FR96X2478304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f0ce735e6ebb3c0b22cdcfb6f8dd41d6c81c19a5bc316b385ed49c2bc79905. 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/FR96X2478305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b0ad1fcb7fba004c408980a1f3f33a91db3963c5188b66984e31e864c30bfc. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/FR96X2478306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455d540137787dd08fc80f2981e72f3186dd4f0b82c8b7cd290bba3003fe2aa8. 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/FR96X2478307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e41a281372ef4c56bd5d1693ee3a07d003a0b79101cb27be8d72b62e09f282. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FR96X2478308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0648934ea574aa582c401390e226456cfd485bb59375cf7abd51cac8a92c43. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:04:33Z), 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/GBMA22450739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7168fc4d6ea44e01344fb50e8bcbb3b828f9abb28454f7a42517bbbf339d8d46. 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/GBMA22391083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc163d9f73eeb2c2c70c77d8d44870b1892e83973180671456fd4e7f4373c7f5. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/GX53U2398445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bc02886460111f6ea2cb4261eac09df9fecebe08bebdf86a013c8a9e90cfb9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GXF9Q2416566.