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 0x7ce0d01b0b5822c5893052dfb515fdc7629c8f5fcadd444b36744fb98847ccec. 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/bc901976-e374-4a88-af48-0d383b8f0688.json and https://artists.proofprofile.net/proofs/artist/bc901976-e374-4a88-af48-0d383b8f0688.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 0x1671d4c3155af535bc17c75540e93d12a018f880db2b8dc51e047968c40264e5. 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/TCAGP2216590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fb3b2580ad0283c06846824e5088d915f5d521c34bac54a5826163b0346463. 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/TCAGP2216598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb6c6b8f5163b589cff8320ec98cb56d886248f4cf6cb3e28eefa46e4ae7a5b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAGP2216601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd64983611a64bcbfa6cf2aa0dd157e8303efb47a39d3a4106533cfaddf58f23. 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/TCAGP2216605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a73f57ae01680e36c61ebae10a220324a305f3ef9bd3bd46e20e4b76524c95. 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/TCAGP2216607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfce3bdfe487c039da13234668309b30d2a19440608fd4f442b0636ee60cc9b. 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/TCAGP2216609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a2d75b445a1d4b6f0e1ec13be5421f634e1312d4a90ce0966a97a9f786816a. 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/TCAGP2216612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608af8449b5a7b41ef355507fb679da66d5b7f4a0efd298a393526292466b3ec. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAGP2216614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9daa7d8d6a78a900695499141096953d4f9d323d325c6c9bd5b800774074da. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAGP2216617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768bd6ae134cd9fae8865165ae34d451101341ecd76dfdba66cf9e850702d279. 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/TCAGP2216623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2b8324c0bd0fb7dac3a7af21e762a636b5790b8a7814d399314731539d7575. 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/TCAEY2043287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd23bd9cfeb108f4e84b9df89b81bedeb4a9d8453967f5139492219d553d510. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEY2043295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79160bedf05ac53e3bc01031271c8999e4cd0e8168e8b00a7673a77d5e28421. 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/TCAEY2043296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b7244483441e95e3bbb11b02b636fb75ccdeff977137ddcdafe4343ed64393. 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/TCAEY2043301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1e1da233dec52da9bf1c1d352fb73042555f5f6d712feba99713e7533d7987. 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/TCAEY2043303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312fc8647d7800946e5edb2217987517ddf827dd5ef323821d0024cb11e7be39. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEY2043307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beb03619a2ec6e2cef60dcec9bce0bc9eded9c99f2ec9ee04d0fc612677c607. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEY2043311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cdd0662375aea6bdb36ab464418d823f2eedfeab5821971f6b8aae09ada18a. 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/TCAEY2043332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d52c32deda33f3431d1bb9dcd6776a3847a5c11637a1bb4f4e99d94a5a032e. 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/TCAEY2043334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b977c85712aa1869f1d92a3e8cc4f913c006492658d1a738f9c2435e7627726. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEY2043337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6100b5357f4a563ba42a3949bd491518df6689b759b2a9f24cd70b5c182f258. 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/TCAEY2043341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839701c9e942ba795d6c4a32d32829994e76a895332262f3eabd37314102d3f5. 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/TCAEY2043344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f8dcad4712ef187af5a8e2982ce27c759e8dbe7ba023aceb732f759e192fdd. 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/TCAEY2043347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308a80bb8308eb694b37cf36ff6b7213108c224713108787df2b8c764ecda09d. 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/TCACZ1747817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71eedec25ae5c55635d6a1c262e3046601cb1f71b70517dfdb8ddc11d6561e7d. 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/TCACZ1747819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe794ad08d1e3fe90c666d51ad29ce789600e877add210378e0a393dc1fe57c73. 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/TCACZ1747823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca79a41fd31edc6108561895aaa5df0872f44cedc0c9d07415b0bdcad3e7312. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCACZ1747825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeea63d2df6cd1147f09eb86152ab57d43d0193eef2a05356740ae8f8511c52c. 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/TCACZ1747830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6748fe73c5e292f7b4975ff8a5242a5f6bb059938888f82d961929f356f125. 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/TCACZ1747833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386ffbea96d3284472f703b25fcfd493a1000c9e7c5158082260f9013578c9b9. 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/TCACZ1747836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f41bc36493c39b274471ad486c0dced51fb08e055321211909d2ea642952883. 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/TCACZ1747838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477e5b70fb0c94c5d9d9344a29a88b12566507e92fae6d0cc58ab9c6656a00c7. 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/TCACZ1747841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b320713078cef17b3c34390fc1e5b21a860e87c7c7e12fc0ab1a9c75c1489ec. 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/TCACZ1747842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d4f460b48c3a3de0eb4082d8230e3f3ff6efd4dded846cc019d2e0021fc7d1. 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/TCACZ1747844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4026c2f8fbbb8e43919997ec4c0213465a1450859385fbb84f1cecaf82d423f. 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/TCACZ1747845.