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 0x6886962d3ff81fb776311ffdb1cb74daadfd821cb86087d772315e1064b96c82. 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/51d9c513-56f1-4370-b578-dbfc008ad952.json and https://artists.proofprofile.net/proofs/artist/51d9c513-56f1-4370-b578-dbfc008ad952.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 0xff495e2cde149fe3383e08aa2a217801e2e3543ea269d61ac0e9cace74729b68. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:02Z), 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/QZ5FN2244542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a2a532ed998158918155131376eb125b1cde502a51180967bb7162cc6b9dc3. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:37:51Z), 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/QZ5FN2244570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59b54298df61e9b16b6ced97f316c32a170342e52ce643ef4006a33a02a68c9. 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/USLZJ2244610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa47adfb88452491fb267bb49cc8e5f30c6e3ea602ad595049c2ff5db43da77. 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/USLZJ2244626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5f7cc47025c2c03f60e38fa263dc6fe6325f79d0f75f2320d28871a68a5c32. 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/GBRKQ2227771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2611284397c11bff7ccc133d8befc41af65268ac3f50676881734b9925e9c56e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:03:28Z), 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/GBRKQ2227795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e8f249b3aef148fc26ee653208c8cbe90421efb36d8ffcde48f7778a1be077. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:59Z), 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/GBRKQ2227886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f9ed04d9c4711641dfa87f987b5bd6b470250a13fe8a9e7a14059676db302d. 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/GBRKQ2227888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fd3d0349cf02de96645aa20f5985a7ed105586e72a0ee7169b026c32ae8ce2. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GBRKQ2227889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf084c305a641bed6689c6972f18cc176645b54de68f2c1b287502f3ff4de5114. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:55Z), 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/GBRKQ2227890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc76451fe9c1f6b202cacc81e544ef4969594123fed84f633216c6f4ce128af. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:28:04Z), 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/GBRKQ2227892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61351bbd194bde29bd271ddc5e2ecdf342bc4474d79396fd33e62bb3c2c76e51. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GBRKQ2233565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95208dbf20cf3bbb83b0c0f715936d38e5368dd21e5278c1aec396c9d63cebd3. 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/GBRKQ2233567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fbadac3700c4e1d318545c935f841a25592fadff8e5d68c5b4058eec44e6eb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GBRKQ2233570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c654f635f2393338740d388a2e45116e3e6064b0f6b3938c142e4914317961. 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/GBRKQ2227837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2145e74e3c4b4c4186585f2ec8056936c1fc9c6e94d19195aebe27823f57b4ed. 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/GBRKQ2227839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e450d6c3619d874afc6f472cc8408b1ad7af21d4e0585035e2daec09982d44. 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/GBRKQ2227866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e487f2dcb3366e6c8a9fc816bc1dcb53beeb5833b04f7ae7afc6ed7e156a88. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:35:27Z), 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/GBRKQ2227868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dab4e7cb5e398d88addaf63b3146c8f8ed9ec8cc0303fc07a1514f137dca706. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBRKQ2227878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87021236d7a289086e10ea2f2e61b4a1ce8882c7b97a36dcf7bc7b2c38175353. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:20Z), 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/GBRKQ2234846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03489d4622cf3c92361423ebfa2102ccbcbd73f18c3d81b599235e9888cbd67. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBRKQ2234853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d34b957b98b9eeb590fcbcb28f043710c43da4705df860cfeadb4b66c9a9c1. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBRKQ2234854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd699b217f738310ad743d18ac89bdba489fd96f6a068cc7c97f4c5c54e6e7612. 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/GBRKQ2234856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c5511217f8ac39c47ac5eac488e5c57e69cf8dfdca22229a3e97a9799e6665. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/USLZJ2515110.