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 0xffd86e7649c2ef21f678230a55bb712ca8428d6454cf9531cedb850f729a99c9. 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/8cc647ab-d3fd-4813-a359-f4b6f1774a9e.json and https://artists.proofprofile.net/proofs/artist/8cc647ab-d3fd-4813-a359-f4b6f1774a9e.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 0xd725c77d15eb80bde9e44c946cdd2232ecf95701a1ede60807f34ab45f032111. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6N2212414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf623e4432095ca2d5789c21e0ff36a0ff4a6f9932f4a810ef558838f32c33ffd. 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/QZK6N2212417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf60b202f52178ef4f40da2e1f194c0042fe86a8a82e36971fe0f245453a74b. 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/QZFYY2377783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04316d312709a0fa1328a0e94f13270a0ac6b5586439e13b5efa623719beaf5. 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/QZK6L2391931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2f25325a6d6966500dadf9112b4ea0bb1a4646e2cea07330555b3cbf1ab680. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:27:58Z), 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/QZK6J2319144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037256daf78a7509e522cab6dea984672d066ed67476b3cc91c3102bf1ba318a. 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/QZK6J2319145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af3f1568ed9223005933a0a74d8cfc417e94e1d0858dfa3583a27495bd1de67. 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/QZK6J2319146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4168433d84eef6b5f0e0e786c8168a10834bfc2c727eb4e5cf43e8011d1d753d. 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/QZK6J2319147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527277193e6cf3f60876e419f2fbe591a9d1f93a4ee06007d3e755b07b33262f. 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/QZK6J2319148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035b8ad74e424099f8ac4966098cd7c73ef4f990436c9a7cd1283439e9165901. 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/QZK6J2319149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4682411dd4902ea6b004c7ba07714b0797bdef8c815f41f622a32b158759c7ec. 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/QZNWZ2338587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4019e23f55a940e1d93168230f44c118219234917e6e6d99bfd511f690808634. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFYZ2466361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b256fe122a5d098c6e9875ffa9644019ba068b1dd8d05b3e983719d5419e29e. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/ZBTB42400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9143cb44935b43af5ac72a8c031c257190392e5120d8e6250c9a3a3db6cde5a3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ZBTB42400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848e0d92115cd2c378418f4e6116274a1e649fb01c537f20afabc15b2d49496a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ZBTB42400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1826994f0c84c05c9af9a65235b82f187506f76b0cf2893ccea9cc73ad578fec. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:06:21Z), 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/ZBTB42400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d405711d876a8e0d4d98fa6e629d4201741e4f1bb033a20af3af67a68dddcda. 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/ZBTB42400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d290545f287b15fe6f25c2213d632c0fd9f8144dbeaaf520c5baeb2958e68c. 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/ZBTB42400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43502fbc48af3ed316c4ab46399942d042d1cf74f373e3359741da4bbab8b2fd. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ZBTB42400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a78e314baa1dfcf775b6a39eb352c804fd95a7d6694146428bc30d1b627a76. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/ZA56E2420033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f2fab8f58e64936779d33623748e6ebe37e5a33a7c043d55b9d66703768ad9. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/ZA56E2526905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26dd7b2978cd99d18ffbad6de3660b713df292f1d1df8cc5ba57b613edbe280. 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/ZAOI42400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26dd7b2978cd99d18ffbad6de3660b713df292f1d1df8cc5ba57b613edbe280. 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/ZAOI42400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325e70d7866f3925d86f9b5e8afb638ddf34663fc821f846b68bf2a2164b4225. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QZTBB2448587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ba4ef2aa850d3e9b6ec586cf1bb896fb0f8649a2ed9aa11b1008040c7887f9. 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/QZES52477255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7d4f1bfb80d2b9b2f471c1b11d9fac0b39141d79b3d3911e18a066a0fc1e82. 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/ZA56E2419816.
Typhoon (feat. Sastii, LaCabra, Lowfeye, Blue Pappi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce905274a6874150d9383cc64b00930f85a1810b1eb21f5f827c8561be29d81. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZA89J2400053.