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 0xee6c9576a9009fdbfdd2c937474e4aec9b60b132e8af8efa1da26cd00151551e. 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/68bba572-4ebc-49b4-be8c-169e9e8734f6.json and https://artists.proofprofile.net/proofs/artist/68bba572-4ebc-49b4-be8c-169e9e8734f6.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 0x5b3a58674b952cbc24e7b8a57134f0f3d62713d64f31ee0911c2f8053c584481. 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/GBLFP1786724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb943adcfd3a9e4cd8bb2597a886c6af97bd279b11601f726a834e3b1d5e9161f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:25:17Z), 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/ZAQBM2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7cacde72c4f15a1ef1837e9bf1772730bc48f4f8563f19c6794cc8a68dc344. 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/ZAQBM2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40eff77d641b17ab7c2c806f91ad7065534a17ac84c3f02e4899bdc3c6da84c6. 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/ZAQBM2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c2a56bb9498859ed04937be10a25f5c6022863345a6ed815846613240f40a5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ZAQBM2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf9e653ac91078fb17ac201142248572a070262a13c9dab391efbe7c5164690. 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/ZAQBM2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3249f8e27da580f212811b7b81b74647f79c8dd698b16107b7b5ceb1571532e7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ZAQBM2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d425f24f850e4d2b7b156426efd9579625388d3435af0b74e460f769f691223. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ZAQBM2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5878783624d1150dffd30444f4d440fcdd2249481e9a730a449608ae5c20701. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ZAQBM2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc410b3a04a12c359bae7294013afe332d6334a9783a62ca5d098a1334abcc08b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:05:35Z), 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/ZAQBM2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3755f57a9f43d87db371ddc1e53bd47ec599c2e499f967ec5445bab7a403872a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ZAQBM2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb303122639a27f4c066a60148282790ffa98f5a817b1b7d27f5a3897bcd0f5. 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/ZAQBM2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647114afd7f4831afab6fbe469c644d534f5f8c706e23448c889e33527409836. 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/ZAQBM2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7e48a9f6e0e7667afffc350d7f489142c9eebb3289bbc75764c9e57be6d92a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAFK2159263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ef25c72deb54a08c36ffe3bba19e0508fb34e8e403c92de98178fefac7ccbf. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAFK2159298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39dbb4f9bdca6875a1cab2cec468f54c145314d7a340ec9453bf064bda41c82. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAFK2159314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a2ecd456a29b84f804e8240af11d81fd5112c9628aacad5232194d8453081f. 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/TCAFK2159321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7783dc55d8e6fff97981f4c82d12df65f57606765a214d37ced065ede12dd31. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAFK2159325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87fdba03b3de5f1e02d27afb1a2fca9e1ccb675ab24728ca346ba413ea4b7b8. 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/TCAFK2159332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ab2cc1aeac2a3b5cf2a869ece2ccc5b6a6261230670b174735dc92caca7324. 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/TCAFK2159334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721215b0d2d084c5a2b4f1e35f7bf9e291cb22871aece09a9c947433534100ba. 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/TCAFK2159337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2858d1591103882226ac177d78958bb980f50848535bd83d6442a89e306336b5. 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/TCAFK2159344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaee4ec1966897cbe641d75d861fc1b4d8f3f23b611a128f4136f2c783dc9e42. 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/TCAFK2159349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b8786ba456170fad36a4d311865780bb2cf8c6ecbe6456e4a16b8083d79616. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:16:57Z), 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/TCAFK2159355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79b7ef6e13a0a142d8be99e53f72a0fe0c6afc419c6399ca5cd0609b8f69dbe. 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/QZFZ62365809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c99977acde89aa81a6683ab1fc29cb27b57e3e0ad9f53dabe15c30f2b404b9c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZDA62343994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc85308194baa67c60cded7f8a381c82f07dadce9e298e8727759b20c7431aa3. 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/QZHNB2309011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1beae061c9f086b9b448233bbf80b0af656ba32430f8ee9a655943bcf8ecd9. 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/QZHNB2309025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14165c791bf2ea6d1dd82f28a8719307addb9bb6247f929aa2f22246bb3dbfa8. 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/QZHNB2309028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966eb230455bcbc62c2aa568249b696793b3a33e08a16a665505f1c5a48aaa68. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZNWV2338141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b5718e6d71d4cb8b62f5b6b3bd49b19f8cb69d35193a5f29d0b6c00c7126bf. 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/QZRP52309836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f220d4786b6e5fcf57748b7fa153fab27833586fc369a45d29a22e986684df. 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/QZNWX2449366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddb16e9e3527b12415e09c5ccdbdf18635caf4d228b13fa5a5f8bb600fae56f. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZZ7N2537112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe473c7fd0c37836fdeb61c4252c2d48e93be790e683a4f108a08559e95e2c1eb. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ZA56E2304162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262215ca57395551c25c27462f3d94fd2f823e7fed8ae186198ba9abd9677a99. 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/ZA4PM2301013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da7e3d58f6dd111756f97f4b3646fc0e22435132a2436603c39a5402ce4e4ce. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMEQ2046522.