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 0x66cd02088443a9442279f75f54bf66bb1b0bf50623cbc85ecfedaf1f9672fb59. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61b67e1a-5339-4e47-9d93-010b4333955e.json and https://artists.proofprofile.net/proofs/artist/61b67e1a-5339-4e47-9d93-010b4333955e.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 0x00ca46739463311688c3407f255c0dd6d5e60a55458b2c3016c61a4b18b2138c. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/TCAHM2327596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cdf229abc975b6c0ae6bbeab0f89568d54e77c8ee97f539762e51e9f6b83f4. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/TCAHO2363618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbdac5cb20d8adc98c7d2c2284fa946294f2c063ad81f73e0b0569a0244ba12. 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/TCAHS2334819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5007b469d31fb47dcf97634c4350067fe9645486c1f92405d597224ca9cea9. 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/TCAHW2466699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21354f631ddeb4b17a9d421bb1001ea8215a2312317a8da079f71b4640abe978. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:15:36Z), 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/TCAHX2439647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d9fd869ce61fc0f3deb005a30eded86ef7fe412105caef39f00e7ca59359b7. 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/TCAHY2497078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6438519bcc4daefb812e7f90c78777c4b4af32a98ce6097d007d6f5d0b2fa165. 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/TCAHY2488872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb9b4cd56b2f2c6b2be1d476aef48e623ce690f2a9149a10d19dca52784376c. 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/TCAIC2488314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c76d330de8b6d5d014c2130bceb13b0ab0874346c62cde405bf2d976b9b97d. 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/TCAIE2454531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58b7eb993ac1e1f7e42467dc9e8124f8f5cbf8ab09dc91038da3defe49cf77f. 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/TCAIK2414326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d042a9048a2f4080aa46be27d16f9aa43959dac0ed36b998fe821b6e96fdbb. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:57:33Z), 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/TCAIJ2495554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9881a88f5acff46dd384fb1e82a217cfdb7071c7b1ab3664f7b6f0b86d49368. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:56:34Z), 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/TCAIM2426708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f85b39f6dfcad00b2b6388873e4847c5d163cb16bb8b7354481a2dbbcaa562e. 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/TCAIL2426839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a932fe3a43fd3382a026cd6c72a7f55b4ee8d3b11955232b7720624aab26ad. 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/TCAIL2480100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbaa1cae9f900b58a6febb0e9697337d37ee0d00ab1d32fcda3d8226b8d1c30. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:54:44Z), 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/TCAIO2432370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a509cc5160f74b75849818bf50b8e79496e1f23f6979bccb3003d4c01c0efb1. 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/TCAIR2449189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31413f293848c62a916d2ad7c34fa1cb14f8abd4cd8017faa98d990bb4c13b23. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAIU2467807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489eb6409e321ede9cebacb1a4d691605cf472096f34f5343c7a15272e659dc2. 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/TCAIU2475367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a3487531d54ce177955a7979d6d98bc1129b63dd3db3ba0b5e4e3e384f9a25. 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/TCAIX2446862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1363a773285a13601768eeb1b45ac835d5d1e737ab95bed12728a4e6fe1fb0. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:36:07Z), 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/TCAIX2447630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1445ba20b03108c2f55f83da3bec846b2ed0ca950c47f3b107c14640ee5bef. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/TCAIY2433387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3509e23bff95691a527ae0b6e7640e1f939dad400c1434b13d6f87015c61c65. 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/TCAJB2410163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecca1583ad51e22f70d09c469a9ac76686e7de655822530fa4f147df338de74. 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/TCAJI2559716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa466f3658659ccd0388f5d7160e479a88f7021583ca6fd40cb9590349d099e9. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAJW2523324.