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 0x4b18f8de246b340e14c92f14b322b98fc04a119143a97762c54d2dcd989017b4. 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/23e6b098-2c7e-48ca-a196-f577428f621a.json and https://artists.proofprofile.net/proofs/artist/23e6b098-2c7e-48ca-a196-f577428f621a.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 0xc22bcec498bde232c97a764f2f86b6a424579248bdfe8abda5a31332e0674494. 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/QZES61872267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc7a9d2eef6f72ef2258c0a16467c672fc962d217e4b4e23c7350d04f902f8d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES71897640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf959a84b55e9108373104dca31cf5d2217643c8c7295646e20c02bfbc2db0eb. 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/QZHN81987708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1092a858a7110ef3a806787242737e6a561b2536dba1e454a24e440711d3a53c. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZNWY2181403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c55323e5a7d65d3e5898df26979fb52d1e0229d35f4251ed03a6971b325a4d. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWY2181404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168f8c35f3175b43d5d972b1d6358f465fbea656fd13b30d440052fa70666a0d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZK6L2198676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ab461dc7bc5f9b908856ec7e42535ef19ee328cb2805a0794b31c737e5c722. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZNWY2181405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982537bd80c0262cc513b4f23c183e82f982b3662ec26999d4fc5442d29f0488. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHNC2156204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa36683ed734899c1140afc996fca9d23e8c054e4dcc49cc967c51385a37941a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWY2181406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868d78f3a9391a45147a45ac71c5065181aad8835d2eba0fc61e05bc40262709. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNWY2189343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d6050d09dad2da349364935fa3940911010f5029b35711b395d2c58278cc3b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNWY2189344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2f5a68ef44558db06c811520f0e3718eb1e5f8099c51fd3aa14e092de37a69. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:17:43Z), 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/QZNWY2181409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59be340bc3e385a8686bf73ab0ac3cf8be903e489be79ba0eb93ad6fe8efa48d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZDA42294251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4779ef83b46bccf8bc31614829b926df83914dec79811451bf266df30f38bb80. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZHN62288384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1083deac87bfea6709ac24e597d937fd4ab09b253ff3178805bb0276a119a7ae. 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/QZHN62288386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a87fcd12eaa29115226129b8418049e4b9a330397ab12ccf7de82c5e8090603. 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/QZFYX2328527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdc0c07d75f938cb054bd1acdac547354147184f7d8ef290040cbe6c2f99534. 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/QZDA42393154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c20d6c16bde0e6e50ae5e5313278d3839b1304b296f3188456cfb0ca998074. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZDA72396468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef369fd9934b57b19757ac8e81145713cdba40caba8e8fe66e577cbc60ea1d5. 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/QZHN42361931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1aa9aa04b67666691d0ead53eb0bab4d69a07d46cb18c9248391c2f48175e45. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6Q2353276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0777ca106568dbce6b7b95906a31fc928d7b64c55c6c6b05e07d143dad1db207. 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/QZK6P2378879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abc5b12278340fa184564225cc35fa4eb4d03e5a3fa70073d85cd35b4d536bf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6F2341003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cce2fa70d37c8cc6f94d600d99e8155fdbb621ac7bf08fff3e450cb397da1c. 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/QZMEM2319604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a1a8d5be67fe3c5806754ee986abb2a11e71f2f92f705952e4f7d2102205b0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTAY2394144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebd1862e300e0c76775ccf1df7271d4f0d456cf8a9b8da464cd61cff1a58615. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZTAY2394145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800aeaeaa805c13c78d2313632bafd2c27a9fbb4da35e3fa46b44a3d46385eef. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:52:29Z), 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/QZTAY2394146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1aa9aa04b67666691d0ead53eb0bab4d69a07d46cb18c9248391c2f48175e45. 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/QZK6Q2353276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6feaf2a4de3d94dd5d2d4d75ce1922663e1193a76fee0178fc6d95f0bc6be7b5. 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/QZTAY2394147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abc5b12278340fa184564225cc35fa4eb4d03e5a3fa70073d85cd35b4d536bf. 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/QZK6F2341003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb862f8c23adb0b936bec7c46165ea7ba2bd52199871f547bee4e51f9d4a74b9e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTAY2394148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0d369401e3cc62eb3c0f6a25547c4d066c1feaa0ea437ce54b30567c1ad29d. 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/QZTAY2394149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedf876dd99eece5b8d87078f0ff473877b142327f223cf5f93e30a7f8029e2e. 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/QZTAY2394150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb588c3f2f4a764afb8463ef7d8c51a90caa21574679617ea55199aa7e2ba9b78. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFZ32435665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a080699a3665a075ba7cc3555b45db112dd04cca03f353130d68e4ee113bb76. 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/QZK6L2468450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cba7d96f0552b04d2138bb69984a7dd266c50c2d7df2be54fff30b3f0946744. 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/QZK6J2466377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f0196f7228ff8c9a88f858ed13934043eb477f1fd5a5bc19a3445263020144. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:32:15Z), 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/QZK6G2420206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0088994c38fde8aa918a1ef6f16f3510953ad954972313304f02877d8aa3b481. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:07:39Z), 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/QZK6F2495623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9752757bdaaad3aa29094a1e9d8c481c8df78ffd9de65c5561129d3087637884. 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/QZTAZ2497269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe228148312e08faab4dc0410b69cd94e10eb42358d37ea17d00397d0f845c35. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:39:00Z), 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/QZTBF2438083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae14cd03f53df432f6c2fd586386f90379a1afe4950cf6073dcb38f11517e455. 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/QZWFP2443188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf423328702c5af4abcb1bed72861c9ec03f53ec94401494d9349310d8f7bda6b. 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/QZZ7S2407574.