Course of Nature was an American alternative rock band formed in Enterprise, Alabama in 2001, later based in Los Angeles. The band was co-founded by lead singer and rhythm guitarist Mark Wilkerson, wi
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 0x1c42e6273953b1a5673e67f550a6f0bae756b5bb122b7c40a529da4b0117dd73. 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/c0190b6f-b8dd-4b85-b7c8-66bc2870aa94.json and https://artists.proofprofile.net/proofs/artist/c0190b6f-b8dd-4b85-b7c8-66bc2870aa94.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 0xb70376dfe7def765d64a0e773780b72f3478b31ba986c90df75ca75d93206326. 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/US4C60700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8510d2b7335868b83b7633a6f691ecf7d21f360c0bc1e6dcbb6eadc45146464c. 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/US4C60700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20921afb6a1c29e0094f7f1d27779085fec67c11e11a0b93930ac732b9c46f89. 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/US4C60700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1dd5358d7b6966a6d678be2f19638ac07e461ed925950e1ae07d927f1a71c7. 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/US4C60700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc24a4c124cc928ba1aea388b5b3d69805af77ae15ee0e3b3ee6aee6f21aacda. 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/US4C60700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6fcbf4a515bf010b5eba80e03e1b4c29ac0209097077351ea6923ce9fc17ad. 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/US4C60700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c96a8a5b32382d6191e6559c881054c7415e3289df925e44cef177653cd449. 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/US4C60700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c160461ea72135fdec126c1e3cbf40e61e471091993e98ca6f0b43e4d8dad0. 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/US4C60700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca1da91e63f617e4b1415f78627db4ce7ae8379c08608c9ee30003833105c8b. 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/US4C60700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791a8d03fd3901996e95c013512bb710fb3fd447466d169926c23ab9442bb858. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US4C60700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ea345136f1c12807f8268ff389cf7ba456e424a0315f5856ce60160368bbbb. 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/USAT20110979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5be59628c2e6a35bcd423f771cbb2c2c8062cfdd16e940576244294660335c. 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/USAT20110973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77025fd3932d2b53d053345f6c8b5ceb21ddf88016458eea9d7fec408b99e068. 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/USAT20110975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f2951e0c624c0085528b91f3afe0e5fa5321b8945b005209e3d9985f0859f2. 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/USAT20110978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165e1016b44477019716f204aae9a6ba2a1300fec28b773a77ddf303aa1a2eba. 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/USAT20110977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd8a0fe4132aa442554532d46164dfd6a7608b9d302edd8a23ebf8445953b1b. 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/USAT20110976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d2d05f1783b4e8cc172d7d4de97b5476862641e03c1eaccb33ec95b28b0094. 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/USAT20110970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f1fa3ae496aa0379574acc380bd364f2c812b5da72800c5809699477eb69b3. 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/USAT20110974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164fbaf62f898a20799b16c513d9780fb397923ecf4beb3f033bbf061d4b3ecf. 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/USAT20111185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcf9a36f6ac3be82fb0bcec7d3821e5eb4ac46f5f7ddbae13333c7b42493cd9. 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/USAT20110971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70376dfe7def765d64a0e773780b72f3478b31ba986c90df75ca75d93206326. 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/US4C60700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744d513c0370d51a83445b4c68f7680286c1c95877f36aa3de127645b58d8451. 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/USAT20110791.