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 0x58ee7f54146a27a95b02c18bc4dfcfcf9257a3d5977d71977e9d418e82925f1d. 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/36769f05-5d4c-4dbd-bd07-60882b8bc589.json and https://artists.proofprofile.net/proofs/artist/36769f05-5d4c-4dbd-bd07-60882b8bc589.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 0xdfafe408e85d253a7da15b5e5b276b231cacdbfddd3083e6c6461d3bae4ce6c7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZGLS1950591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7783fc6d642a46ce69e411950f893045ba45fa3fec898fcaae503d6386efe7cf. 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/QZGLS1950594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83322c3a0ca1e319b3e380a37afdb5a8cf328ee4d9666fe9a13d044fc164b5d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZGLS1950596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5858f853271214cfdc3ffcaa0594f0f700d7ed86b36f6ba2c163977071f4f9f7. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZGLS1950602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ab2e194a03de78583062a7d61ca5bdc463262ac50d6ddd8ba5daa5f385eacc. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:45Z), 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/QZGLS1950605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec418b08737da086dc6c32f06c19728f7880fa24f2fdd1775b3f00bf146e366d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:10:13Z), 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/QZGLS1950606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ead5eb2a1889bd237ba3f6130c17d2517ce99d48448896db3f23c53604562f3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZGLS1950609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30dd127d15404a57d6d775b830ce88f630b651d6ef2b19ed1289999c1152eb9. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZGLS1950612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c545cb2ac044077a95e4da75ca0094ba2800359627863d521b439ee32834d54. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZGLS1950616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73b43067775d344d16fe6ae8f9169be8ad8b5c211c2161c30ae003119ae3276. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:03:28Z), 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/QZGLS1950617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f91ad441b3dee67f4d6ca1edc065765b25951041e68b2c9b563e0548b6ce86. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZGLS1950618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f0c9a0c81f4e030d1a86808fcd0f63851800dbb94e75581703c3a1a34ee268. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:53Z), 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/QZGLS1950619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8237c695c990a7490dedce92c6bc8fcf515a1f8ec9503c728ceb267d188e5d03. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:09:27Z), 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/QZGLS1950623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd3cc8549277b8e437e6995342db1fcaea8190458f414021b2c49880b024c1f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZGLS1950627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7593c357ab2042658fcfbcf59c14c544b072eac52ad339928ad6b328ff647d. 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/QZGLS1950644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef0103ceab9d1cd4768f7e7cd35dff2d502992cae1a640811c4456b3e2f59d9. 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/QZGLS1950646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc520082ee2bd93cf8b9fb56383b688fd4f4fea4db106dfb3f9f7d66b0597024f. 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/QZGLS1950647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91890a2993b1567f3804ffa07ee1f6480c1080d1ebfabb677b6c77d9b2b4c31. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZGLS1950648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cab463ffab1568b80b625740bc1b017e92cba5121aee1615d45636bbb6a7dc. 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/QZGLS1950650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae37d1300e156749aebf09c441d1d876f76b5e6557625ffcb84864217fa526f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZGLS1950651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9d1a3a6f6e8cfb80cf2204fea7be5d1158f3210995d785c2c228e0612d7360. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZGLS1950652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7c0faead3bcd4f4d81ce747123ad5bea3c0795619a43bfac6282807768199e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZGLS1950654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525dbc7702a3c42183e35cf9f8189480482adddadb6dd31e6be3e2d75824e10c. 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/QZGLS1950633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056239cec7ccb776d27121fad70e1895b3e4a36397a60bd8f425e14c24fe8f65. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZGLS1950639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cbb40e2630336d7bff7d999dee83d46c0330d3ecd43f0d9666e04a18790e4c. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:22:50Z), 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/QZGLS1950640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d5e2950d3ea4f922d7ff96181dbd5b57b04e61b4e98afbc9f1cec5acd54f6f. 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/QZGLS1950642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735c178ab0752fe60d14270e354ecdfe4f6e43b8197cb4bfc8b047ce3c15bb5c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZGLS1950655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0adc22eb53505e7fc7e05e07b4a1b28bff5746861d9d47c9391667a213f0e35. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:35:33Z), 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/QZGLS1950659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65052c69698d34ddb50ade22699f769b2138ce64381ba40e6f446eaf9d2c2865. 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/QZGLS1950671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc083a8d5bafecffccb157953e00a22fafd8f28d8e1f89fabe0741c584416adf6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZGLS1950675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35da3a9a197dcf7b06dbe4f4b1dabbd3bf58c773bbda1b6891e888aaaeffd8bd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZGLS1958110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040fe383f84e18f27ba597e27151e4e162fb4e4f116218233a65c9629af16656. 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/QZGLS1958115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d2e8c2cdd94e3bb60f31adb807d681075e34e083d8918ba77adff6b4e2410d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:22:21Z), 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/QZGLS1958118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb532e6f07ad28f8f5ac135edce270d0b8a70d43a14ff9654aba0d39ff1f4d7fb. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZHZ52281274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb82a93d127a0019d0be8c58dbcbbbfd1ff5d870170d3b6b3f6e43116276eb4f. 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/QZHZ52281275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cbb721bc1b5c9c97b539a9dca26ee86ec59c6f566f23e6a50df8b2663e7399. 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/QZHZ52281276.