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 0x2518f0e0da3b63441badbad34d54fe31c884ddd2bb339e8afa2e4032b22b5d57. 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/38e64162-4547-48c7-9cc9-12345c5a219c.json and https://artists.proofprofile.net/proofs/artist/38e64162-4547-48c7-9cc9-12345c5a219c.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 0x723f94fcc5d566b2b2ca1bb0c3bb2f5287ffc2e9e924ce67344017b085f38ecf. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:24:08Z), 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/QZTAZ2425996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87856ed18b32bf5a7971ab88b828ad7cb46d68615737b04279078e55056d64d7. 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/QZTB32418624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf128eef8d9fab16b1a97b2931bd26522fc0c77455cfb0dadd79626d5880d3623. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:48:27Z), 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/QZTB42411053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43d812821606f10a1fbf4846deba8b396098f9d49a3d9a4fa0e86d8a92d7516. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTBA2438398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dd41706dcc6479f3511f8a9c7253ae5d3b73e3c2d5d2c0de86dece7695aa4b. 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/QZTBA2438399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67a5977691aa1053538009cf118c0a414174b9eb9c706f96d880c02bb884f17. 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/QZTBA2438400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1424f5f7f492131c44da4f4c4744a92ac53c0f65106aff291049c8b2ce097d. 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/QZTBA2438403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbd075d113bdf7ce8e0c3999740c79787abfd47785ae8b7795e0108bbb84662. 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/QZTBA2438406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb438355ea1abb6278792a38d0d71d5ae5bbaba835acd2f3edcb10592d6c9bf72. 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/QZTBA2438407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d9e74aab953af2625c0dab6e7e20f3745e7ce4483b9802edb456a17708d762. 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/QZTBB2446058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1f1bf9624c35359a4acd15baa2f367325d4653e8114e45585a4521ec22ede2. 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/QZTBB2446059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffc465b6c13fb37e9bec661ccd7e3119a178a6cc81f6bc01b05cae8b6f08bf3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTBD2417879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4432ae9fbb01740a5d3f85a4c3696b9b69f8aa1e69d44a5116af9b8bf643080. 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/QZTBD2417880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5278e64b37fda39e68cc279fa503590f35a3960c7ac69f21f701b44d82838317. 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/QZTBD2417881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbec07ddab1d47a815b79551a502e9c0ae7953d387282d494ba3c71a89f631f7. 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/QZTBD2417882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5afdc7f3f0c81a39caf632444b1b0fa09be892917f6ab55bb0f19d8f1b483a0. 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/QZTBD2417883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6890866c890bc621df8c02d5dc974e9847959fcb653560995923fdf52bf3ee25. 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/QZWFE2459259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d45448e0a180a98ff2ae85a3cb265d15ef74151e20ee83bbeae5dd3c37374a. 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/QZWFE2459260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ebfeeb2162d7a1b35478a606a70e613efad598125107d843d7762f63fb8d21. 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/QZWFE2459261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b92dcb4fb56e85cd0fff30f8a147421ed38c558bcc0cc1f3136a108eeb16e2. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZWFG2430970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6502355bfaf3d696648d259a76e6ce8f46cdc19c1c89038d540325e0bf263860. 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/QZWFG2430971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cbdeb06520fe00582561a331c4e5dfc950be440253702111311b6d483212eb. 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/QZWFG2430972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705e5e7f8d4185f7487b441d4e372d07af89604e24a99bbce251721f14d4f8ff. 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/QZWFG2430973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4c7157e6aa3e43e24b80ffd6866da8a13f339f2973af19e15e12a4c7166c32. 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/QZWFG2430974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67fe66c31a5802cbe2602112ef55cd860efb8efa17be34086cf20087c82d489. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFG2430979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfe64a792c5bffa658c87277e8b5fa3372c0f98b3b2d62e64c1205306fd74f6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFG2430983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2e4631e906ad665cdc8b07a3b7f8f67252850f6440826570519e7e97a1fee3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:32:38Z), 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/QZWFG2430984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401c2b2b4bcad1401d6c658ecffe7e3e08af0630e5728b22a3e20ca5327b8afe. 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/QZWFK2482779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a428ded329970dcaf00fc3587accf7c54c99186ab6b72e54508b905ddc7d4f. 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/QZWFK2482780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f68bed441fada468f11397967d5eee24b2cc538a1f38f5480b0cf9220ee50f. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZWFK2482781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb661e51dd7450fc684d38a203d96a0a0e928081f17f73e2ea04da440c9bbc6c3. 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/QZWFK2482782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4192b550fb33c5224d4c9639731729491bfeb005a65ba4307c4b810e739476a7. 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/QZWFN2442323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397d1ac7e2bcb432e7189b4dcfda8927c2f789e8fde584c1054fe5eee25b832b. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZWFN2442324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eef0df083c71cf89250175822ce3bd8d23a97143c7ccf88319b718c2a3fa8ee. 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/QZWFM2518304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20690aa4a62fe977fee834eff318e7b6338b1f04534067bf013cb47a9062996c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZWFM2518305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9147854c4c49551eed89fb86829f34bbbe3ef012538224fe6200e6881f5751. 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/QZWFM2518306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7648db6bf192e1bce2b879a53fd30c8ffe69631cdafff24440579c73084341. 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/QT3EY2562701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1956516a60cd738393ce7b91862a467f635c2755ec2d4e806ff9400dd40360f5. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3EY2559273.