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 0x6d2850894f4a9dc8428999391fed99fdc816bda67854d736efb00500710d1ef6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b0689b9-0495-4f2c-9684-a31c21c92ba4.json and https://artists.proofprofile.net/proofs/artist/9b0689b9-0495-4f2c-9684-a31c21c92ba4.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 0x60869d8c26f74d0b0a819650bfd7aade95ff41f4d3a2a4b00b60325a1d5534e9. 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/QZMER2339753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e0679e43da6f17580936cae8b826925c55eda4417c711f2d5385cb6c316dcf. 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/QZNWW2312853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866cbfe15adbd2bd4b2141a3b442393ead739b216ebec4c4b8cb63cb76a1d1d9. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZMEP2385479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797b2c1227d0e2dfdcc51bbccfadefdbf58cad6432c95db6366118ac07cfbe81. 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/QZMEQ2347199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c2e55ec63251d7304a46e286ffb8ff44f9994ba0329df2debd4a5b7842624f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZRP52441654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcfaa4c75efa81b960ef12a591899af9135743f47e59391d9c415fb993ca61b. 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/QZTBA2481679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773f7c61ada1bdc5892137525550c8b82cb985a8763392b1da2cf3b51c40202e. 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/QZTBB2478292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572b0266e7835ec64c818756b808d976e326b3b1bf54ea5f2c2b837f628ddbdb. 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/QZWFQ2470843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f9a6858bf6907517ad517304cf864d034b06c4f726d7d9660468b3d817bd90. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZWFS2401315.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f8a11129ec17086d86093a1b62b408840a056ce46d7fa70188857999aeb357. 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/QZFZ42575361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd767e17937fa0de7a7cf10f2391e0df52650ad144e316826b09e672616b8b60c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN92522496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a485bff653d69d47525993519d45a07afdc5eeb1a18f0a366f935a57ea52907. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZHN92522497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7306776d073161bbfe214cb163aef12501850c9aacf293b1d8da3526490c1e7e. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZHN92522499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecfc3b35b4fbb7c0841468f2a63dfe4208e13a6b0df87e1a1d4b69ac3a1771f. 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/QZHN92522500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b131a87b997fa2c64f9c6f4ac4ec30fd0f0f6faa2387b2517b3acec62e6cb9e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHNB2587534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6148ea00037dc3bab3e2d6c1530133d036c04243f647beceb5c0367105401e10. 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/QZK6P2517902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b8c19055a5c85296c5949c3ded7ca0567c27afc2760d94a94eb11e3d7058b9. 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/QZK6L2530357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd008a938ea3d9db00f80bf93b7e06a806d0673f2212454a31a5a9d33bff498f. 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/QZK6H2546479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1119a67fcfcc8fe9abc096ba76c6bc020d95e3da704975e4fa634a163ca32422. 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/QZK6H2526278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5b2b5562403a79baa8a0493b7ad9c46e2674c1acd94b392412fe61bddf13e8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:09Z), 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/QZMEM2556506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac95d1b2b16b71a8e4fed9fec5b6ff6d7a3bbe5e6b47f6c8a6a98e0c299e3ed. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNJV2549179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78afebb35b074e02a2341ba31c6ab9b9ba5bd5210fe6743f5e7f5d4ae67c9b7a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJV2544619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062eb117704a3f27cd3f337a5ca72261aa58ec639e01a8d872e2ae554bcc885d. 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/QZWFV2571963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe383c3b9fdf4d409f26b87ab2554ea881d4b10d5d608f831539645b48c05505b. 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/QZWFV2571964.