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 0xc52f0d956deec25ace4b0324fa0c53b829af55e44523ecac979711ca088e4a94. 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/bb424915-7432-4a49-9ab5-de36d3b4534a.json and https://artists.proofprofile.net/proofs/artist/bb424915-7432-4a49-9ab5-de36d3b4534a.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 0xa20660444a63f2d40ab6ef0e8f0e3e7f051164f73157e2b21ed498e7309bd6c7. 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/CA5KR0005509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346f54ca2a998551cf36476729c8cdcde6c317add6defed1c22bbf94b579be50. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:01Z), 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/CA5KR2221141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5bb43c1eeb89a02e72a7c6a9b0dcd3bbffe31f1d2cf3739fe65896e52b5a4d. 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/CA5KR2221142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f0b31a86dc4824c2787ee1156484c7833e93d3a2c804aa59e5abe7268a4348. 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/QZHCR2200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650740fea7fd6730c376aa3fc1eaee313d12807e8407587229374fe6b80db58b. 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/QZHCR2200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f0b31a86dc4824c2787ee1156484c7833e93d3a2c804aa59e5abe7268a4348. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:14:01Z), 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/QZHCR2200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce1608b2216a7adf59ee50d772015683efb83f99e31341f9e30328d79d1ac07. 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/QZHCR2200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d9039937f4cbde394cd781ff9dcfe6cc0d29a721a0232db38443d08ab149d9. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZHCR2200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8dafeda2efedc8281761aef0175805b084ba3cab3b1b0dcc7a1b90d9c8ee7d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZHCR2200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23523b0c249c0d4cd4bc90353e66ea9533ddf280e4b47a238045c3a797e1b03. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2299899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d13fba2625a1c9fc71df1fbfdf663c5d3381cb22ce9d50142345a04bb3c086. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:06:51Z), 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/CA5KR2307110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7479a547f224efcde4503ce8d10451e876d193f7947da07ccacccb46581fdc. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:06:18Z), 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/CA5KR2307111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eab15e6ec34bfca08bbb5470bac5d5895fd3619e9f8d46fb6a91351ff3226d. 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/CA5KR2320826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff31daa8974ea244679e2b0080df2b63685971557a6ae676400f0212ff1ccdb. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/CA5KR2330587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6655ee165a54327417bedfca86deb9d4d15123aea7bcd2ce3a787c476b9f3b. 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/CA5KR2330588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78404e8969bfad4d2cecf3402667d324cf0309ad903e3556862bc012a76c35ba. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:19:24Z), 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/CA5KR2330589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab18a0ea57e3c8c3c079eb1a1536e284476d2293e73dc9c35132e61058088c59. 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/CA5KR2330590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99087adea395743d5ccf16588870c172a3f4932d163a1ef183b311aca4e9a6c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:36:41Z), 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/CA5KR2370556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1d139eb743a8ee78e4406994f2dee0e0728b753fd3d39f52890df0d0d7da3c. 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/CA5KR2370559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea60814dd579beb8af026ab1be010a491a4119928a37ffc1f0a047c5167aac9. 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/CA5KR2370560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb87d86f1e8bfd475117796e3c3954a2375f65697315097204af763d665b11f. 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/CA5KR2376950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2392e02be2bb973dd71caa4c4a8052b7df1e5bed09165f43f1eccc0f57f96250. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2417892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05b79b7f674b76166ea80c643423cc2fada5ad2e7a85f9fa631e11f7522a5a2. 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/CA5KR2417893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16109de7bcb11d6d1b2289d1f482e069d642df156785fa24dfbb610c291bc873. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/CA5KR2417894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85effc19ba1090668a2eb103e3b1454ba83c4ce4ce12adf215c4b8095f536a5b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:39Z), 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/CA5KR2417896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d4374ddd27848e00dcf426d9cf0f41cd5211199e6685c74dec7f3d49eff4a3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMHN2224104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce1608b2216a7adf59ee50d772015683efb83f99e31341f9e30328d79d1ac07. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZHCR2200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23523b0c249c0d4cd4bc90353e66ea9533ddf280e4b47a238045c3a797e1b03. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CA5KR2299899.
Overthrown (The Thrones of Blood Remix Album)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2030531f2667f4984702ebb887d8d6a11970211e1b19bbff91b372b2f0ac7843. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA6D22300490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509c87edb6a08b505ab33d3e6a406255913ebd15c675138d079ded6e1b61b0d6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA6D22300493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fc2704e162780f7e44f7ff56caa04bb9c60cccbe36ce1c92e09b7c1564c15c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA6D22300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fc2704e162780f7e44f7ff56caa04bb9c60cccbe36ce1c92e09b7c1564c15c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA6D22300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744a809c9fe59c57daa104789fb26885c2abeb64a4e8ff902376a4bf643f2f14. 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/QZHCR2100272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b0977a7ea230ee04e15780926e43c2097e3bfea2ff86dafba229493d975a08. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHCR2100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec29929fb5bae8db7d5fa192695f4fe914eabd2db6afa3ebb72b1b7f341008f. 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/GB7YL2100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37348db55b1b3cff2117307e98af695928f287133c74f376b37cc577da31da0c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLRD52302373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eab15e6ec34bfca08bbb5470bac5d5895fd3619e9f8d46fb6a91351ff3226d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2320826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b43e36d0c62d8c33196c0d36475f6a8b03a0017c239abeddcac9d1f348ac8b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL8RL2336266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378948862362fac3df23d5c82d5b82ef85d731b4d29372f5a241ecb482f84e82. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMHK2520228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65722d55a7c2417d7a33b836628b811fefc9d4c9745333d4a496f24b2256375. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHCR2100225.