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 0xf373e215ef7d6cc1da482dbbf35b41b91180d7d88e4c937d421c90c231b1fe14. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/359de3e5-81dc-47af-accf-c42655cb9967.json and https://artists.proofprofile.net/proofs/artist/359de3e5-81dc-47af-accf-c42655cb9967.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dank 'n' Dirty Dubz 4/20 Compilation (2021)
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 0x3fc4bc5df6a5169507c6fe4988cbda32fe900337e78c06507e552dd93cc00178. 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/UKACT2130677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5d9a28c058eeff2753e5aac4a1e136bdcc9ade921d20b814c653518a15ccf0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKACT2130679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec0b4b7e31d63b485fa63b242232fdd9aba22d7fdd2026f4a7da9a623b66537. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKACT2130688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b546f36fd2e1296d024605da0035db56b44888e14b3b4ef79f41c0597c3cba1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKR6V2310147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785dab1ab8a136b3044127a8b46e74a966fe59451ec95ad7f2278bd0000f3ce4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UKR6V2310149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc06ab0a964619fead06e1396feb3ed994a6d3354e066e623e0845818a20f50. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/UKR6V2310143.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4e7b6ee89e1148d87d890e79c2ad11853ee79e663d10a8ceb8d6e4fe84ae43. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/UKR6V2310144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e47ca8bf45fd1cf7ee61e5565fdf4d7e3bfdf5b3318dd39d0c1c4fbc8bf8a2. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/UKR6V2310145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4160bf43086fb4ff6d88dc71c7e9df6e13fe489059f9ff42331338daf757dc. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/UKR6V2310146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5200eeeaee2f899b9d19f7789bbde3c6a001c24a1e71ff847542bbe6343b8af3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UKR6V2310148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc369c9a7b74fe27f493275a92780f799ffcda654a73494d13ccf779c5df4e8aa. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/UKR6V2310150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a22ed271562f6d82ca28664e99639a018588b25b79dd05d904a239aa1855e3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM42K1964432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c97336c2c4e9c2409f0250a2c6615b72f3ec5770623d57ef233ed8c17de5ad8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM42K1935358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9da9c8655b642f8c24cf9c78712520afe0980b42c9e104d296ce81dcd028597. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QM42K1994741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879fd7ba3114379d8a28c48f556751bf164f23e7cb5fc97d3967aa568e01a470. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QM42K1997960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced70be7b07224295512f2cc4fa01f33842418b50573585788023aa5521c7ccd. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QM42K1912686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdc54c83724b4c7f0baaada71f63627d8fafe816ef992f63a09bd89a8c1f45b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM42K1924110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ceef5571873be89ca33b2ba627775d2581aa6c2fffa8d5294333f1f51c8bc3. 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/QZWV32465740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee8c6d8a20f4547b7677d706e175a2b4102b69e8097ac8a04182db1941e7565. 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/QZWV32465741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485a537e69a5764f8da92abb5cfb999f0e9218558c3c58320dd53f5508cdc565. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWV32465743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb2206fab6194301e65e3c7da8bd6e74e45da0ce67dcd4fc1674ffc8d64d484. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZWV32465738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5d2b2932da915733bdb527f34adc0e8b4b99c4c511669aae1bb33b07d797b5. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZWV32465742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9039883e164bf6701a4d45a25278ef3dfddbf1cf78b018a95b00f61e6d7547d. 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/IL6652307332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997badc566eb944f0d837810650a09205032c1751603047bdd6470288e869429. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB8KE2201702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f332638f7244d4f06d3798f0237431108ae512236166160d5ceb49e55218d2. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GB8KE2201703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cfe5b4add428e4fd1dabbc5b0fa976dc9ad3bc9ec57a4b5f6280d8d877fab5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB8KE2201704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f97fd8ae49e5e1d49a686928088a3c1f67364f82a9cbcf6df0b59d3688ff68e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZS642258851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36356a4ffe5b348343de034ece547a5d2bce1b3f40183f8a6bd16626da1276e. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZS642272535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcbcb70b2c4b6b855eec031b16189b4d30c28bf128f3e1e62efcc061f7420ac. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZMHL2206075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a34744e5a92a0b9fcd80a82efef23b52a78a3a28d2a2b4fb159b428ad112c0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB8KE2153606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8281f9fef3c6c2a04b164ada956b517a787fb5376edf4ffd62fefe9384c5b16. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GB8KE2153605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073df639b774c4d634cbd28a26dd96fb00cb177856bb89930a6b5526fc7bf47b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLCK41082939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561700e327b4ccfb1364ae11347d99f3b7519b0542f72b9328f71682fe6a205e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLCK41082940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e2a3ade6b520a5a9f7be6fc2cded1b5e004990250be1e6dc088f8fbc8dccba. 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/QM42K1957410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df2d2ca574c7d4eb7cb6f9831f6da493d3fb84725826f0cc12632005f08ec2b. 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/QM42K1992969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad7d1286974eacc56c332606c42d178df35112e1dce0892a54429107f38476d. 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/QM42K1971316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4bcb0d3cdb65c03124c2482e7043b60ea091d66e4f4604a1e1163185fbacb1. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QM42K1986984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d60f1f3da8baeb30e3d0f050bf8595ae8031441f317dc70dd8a5bbcdee9dfe. 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/UKACT1719053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4c33de173f92cdf6328bb271a937bdaa7fa520b3373641326e62278eff8e76. 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/DEBW22100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefde40dba87c5841d5ff2f3baf6b862f1de913c8449bf5d9714ef117b51c8d01. Chain 2 (Bitcoin): anchored in block 957029 (2026-07-07T11:17:55Z), 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/DEBW22100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0a55705689e85b4e99a29ce40300cb9d7ede6e6e4ddf0b53137fa1bd92427a. 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/UKACT1830704.