thumb|Classic bell of a bicycle A bicycle, also called a pedal cycle, bike, push-bike or cycle, is a human-powered or motor-assisted, pedal-driven, single-track vehicle, with two wheels attached to a
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 0x19eef23f32a1ea3b12a34c2ed47cf0557489a773182e4a961fba0a3f296d2f57. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9d55b8f-9401-4e11-b00d-2cccab580af9.json and https://artists.proofprofile.net/proofs/artist/d9d55b8f-9401-4e11-b00d-2cccab580af9.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 0x258688b89a5422be2712cdbed8435b1c3ddeff80398a3f94bae12e538de26565. 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/USL4Q1838894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc175a7a975cb095ccca392209fd5db7e4519cce1b3e7df6f9c2e026c5e8a133. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/USCGJ2253458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fd99cf6c136087a8aedcad41d9f40c96351b1ae812043a3a4e51c3202e34de. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ2253459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddd443333506a08d9f0006e21529bc75dfd338bdc4a31f2ff368d5dc2088d9f. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USCGJ2253461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cdea2a0b1450c9a6f96af8df3c2e9a80eb09548536d6fc245e9b00617facf5. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/USCGJ2253462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9224acbf992a6b05b90a1f4f626e6e4b6dcfc06af65c532cca9e36873968f73. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USCGJ2253463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe431e27a2a9c8171ebfafdab87bc063eebe4be74f27b018e41539d4ed25e0493. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGJ2253464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc478763d184ddf3ef18644fa2e54fa254ebfa3d743d8b0b7f337a7da281123f9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USCGJ2253465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde22ab7ac1ad3329a820b04df8cd286cb9275e3c4bb420458fff9a61489a484. 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/USCGJ2253466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07206633e77d47933bb5a52e5f51d6d9569ea1e1224fc0394840691df4d57a8d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USCGJ2253467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ce6e89d10ff529d88aa190c6f6f4315be78cf23c857614b3d7eec542251a7d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USDY42463958.
Strange - The Fretless Guitar Jams Volume 1
7th Fretless Jam - The Little Man Returns!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5a29d13ea89ed0b8c7aaf011077107cae1da800d1c1c0bd5b7dab9c9bdcbed. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/USDY42478580.
31st Fretless Jam - Cat Chase (Instrumental)
36th Fretless Jam - Essentially Unnecessary
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fdc1fc1ac945eddd543f846e68caad681e1cb924bcc8cfd21dee9bf79029cb. 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/USCGJ2592502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2689b83609a7dd9310c881e2bb96b3c2dd753c999fcf238dd11a2f5039cb30cb. 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/USDY42536559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6117dbde7065d5ff64850956c150ceec3c5bb838f9d585cccaf71e4e5ce0008. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USDY42577942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e06b57a48a1dda9fb6000d0fa38b262e6c06c51b7b64d78d4b7b8bded7322f1. 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/USHM82537485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553a2320c23f87af5b3518786943dc8865236c00c156f7cee3ab29c45efa638c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USHM82586744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb86a79e6607ebc35ee4b7ddb2c42a9e7e884c7fa26b9d1cbb4d34d0994b5ff5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USHM92560397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84da5fe661cd15460ed3fb4613078f84b3e4d68a4e19488faaf88c361073ef54. 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/USHM92597955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059b72322e865d7e7355076dec92e48d16ac9cb4285651c96fc6be9171c08374. 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/USL4R2530473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9309394dea5d9f9e9009f0b312cb621505c11398d6cf7f6e0275925316289a25. 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/USL4R2595534.