Cymande (pronounced ) are a British funk group that was originally active in the early 1970s. The band name derives from a calypso word for "dove", which symbolises peace and love; "Dove" is also the
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 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 0x132034073bdc9c10ae1f0f6595ab505e072eca5bb05fca12f99b67540143feb8. 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/6f20e091-5e39-4f55-a19e-478e010c3cd3.json and https://artists.proofprofile.net/proofs/artist/6f20e091-5e39-4f55-a19e-478e010c3cd3.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 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 0x7354f5e3409246e911edf00dd7135427fbe61f4d2ec7168e6d8bc70eca90b4d7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GB8A91200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceec581b9f317c48e88f979a176a4f8920c814a38c69a04da8ced6c98bda373. 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/GB8A91200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daebbc922b554974000139b29b60adf4b0ae1c2e714b77444ebe2b847f09065. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/GB8A91200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb1bd21cd4b260a349e18fcba3d98e83fed5c9b930eb3c7f77f7d1df4af6836. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GB8A91200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c3f9260541f051cb9e2536c09748d602488c81c37be661368b3533d5bd920d. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GB8A91200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc035b87cd40ced517d622ba70dfa76b4a03853711ae405a3253c0d3ab374b19b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GB8A91200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d92477ef08559730971193a35957032e30602e9cdd6d2cd6b377690cba792eb. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GB8A91200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011ce53b78be94c9e39392fd05bd528e2bff832a479406fb4e29c03edf921735. 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/GB8A91200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6135399894aa0f7d3760925b0dcbce5692d5e939006fb549ddf1c7703e89ace. 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/GB8A91200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ca7b7e3ec6bd5be00a2867b6f42e5f72eb5b8972d65e043e7c344026d14bc1. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GB8A91200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d9992dc8921c1e22a116f0eed5d32610bc431997af752c2d60a10a0e79f970. 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/GB8A91200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ea119e89de8173796193c7337ca037eed0c4979d0b9d336847f54224e05da0. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GB8A91200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f32aefe2c5dad05783dfc1bbc3d8c9fd4018789c64d8e7e458c6f0a9340348. 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/GB8A91200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc035b87cd40ced517d622ba70dfa76b4a03853711ae405a3253c0d3ab374b19b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GB8A91200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011ce53b78be94c9e39392fd05bd528e2bff832a479406fb4e29c03edf921735. 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/GB8A91200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b27658f97abadbf2f281c8ea8ff17b45fc93e85f3da5cedf81d3ecb668d50c8. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GB8A91200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1778f3546374899b9271831d8b03d063f0dc4c18a4ad4f7d5ec453051d444549. 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/GB8A91200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5795396e33c7383643b29ddf0bab6fedd52a6b464818ac53f05402de6d4bff. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB8A91200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a294101d8acd7ebf532ceab0ed03443d0e5e3f5ca38afc3fe2f2c5b7a857dd. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GB8A91200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b958e734db408517fa157278d0f56c7364be61286923c9dc1cadb03e2f7fe5b. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/GB8A91200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997272d88b4bc2e42238ed951075b35a514eb265e056dd4f16c7309bf173986c. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/GB8A91200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a5fa26b1eba7d7cc74f53b483f367ff3cb7feef40ce40cc61d16069eaf8b28. 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/GB8A91200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c3912ed9c74f1cabdb68a3f099becd69e5aeef7f34a4097e843c15ad41ecce. 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/GB5KW2401945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47416f884b3e988c22d1ee36ce309ce3fe3ebbbc94fce1be055cbcb977cfb6f. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/GB5KW2401943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a36409c38f5c09a4cf3fdc9886e0e9946dc195226c80970b8c73dd69bf03651. 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/GBZA42500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5216238c28688eb4906b27fdc523074c0136cbac6d73f7b7ce6e77045a7953. 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/GB8A91200027.