Mr. Bill is a clay figurine star of a parody of children's entertainment created by New Orleans native Walter Williams in 1975. The Mr. Bill showing got its start on Saturday Night Live as a series of
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 0xc969669e36601252e1553a5c3c461df7e3ace1393287789e169ab373e1c77d4d. 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/5f781f16-2e16-412b-9fcd-ee77d964e624.json and https://artists.proofprofile.net/proofs/artist/5f781f16-2e16-412b-9fcd-ee77d964e624.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 0x434a95bc540a0299c035085aa04e0d14643a58cfcf1a357f58dc0376252c695b. 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/QZDA82149331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff59a91464ad11e5b9f8f2076ea37b4b97fdc77dc73eb69fc2e2e323100aa319. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZDA82149332.
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 0x18da16ca03d651570835d952e2b4f5eabb905f1505464693afdb4a862a04ed13. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZDA82149333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f8dc840d81e41bc29e4369b634f107c3161aa064e693878e4655d6848b47c1. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZDA82149334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d82eb90e18f50ff158594010f57d643f127f1fdf3bd15282a96c5af5761b45. 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/CA6D22400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ca3bfd6f71770b6d753ea8da28ae294f43e386aede408500c84adf7e285a86. 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/CA6D22400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dae25a2a87fc4298d7c6a5f760878b7a22c2a4885dce98276be02d35c8598a. 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/CA6D22400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee610ae71c4a2c915cd25527892f3d2db9b1bc6ff27be2d39b00f1a64e439f0. 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/CA6D22400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605c8bfd67be32c386eb9ed9e4228eb00c5375b710ac54588dab52a24710babf. 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/CA6D22400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc778d4b8b53641648cc84b71a711f5a73b5937840d582ebed21130e4c3e18f. 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/CA6D22400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec45a15140f9e206e2356077cc23bc7fe0f6232fe0d11bb0f5c6e08f0c7a6c2. 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/CA6D22400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cf0b77623432805fe9396f8d91b6509b3336491d1ea4cdb3f9321287ce86be. 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/CA6D22400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71746d8ad3f5f72cd0a38bfc6ff17583a0eba628dcee78e63e17706c9d59acd. 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/CA6D22400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343a5e9449ec3d8c9d2f31a567f326d186bb998b0693c80508c68e891453382d. 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/CA6D22400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9b73f979de3d0a1926df677dc36af6d631d2d13e6a177ad89d8ae1c883db46. 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/CA6D22400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37954b481e8e85833ffccc20b3f1a6ccab19f9f964ff36f401d3f7ddf4ab441. 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/CA6D22400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107c2f99c6c750bb2410a669f295430e46026a7fc1e9294bca2f338f3253b1ed. 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/CA6D22400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c96087703447450457bc8fe4105a357504319b9ce31b3c00091c5515c4c4148. 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/CA6D22400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe81ec1d3edf09034384e6b7e45de4688b6cc3f9549d090399dd4bcba8f4095. 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/CA6D22300537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2887832fa276e1d0fa88b64b120be5ee1f53fbc1d98053e2d0525e1ba8011d11. 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/CA6D22400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9941987ffef69da389965ed05119a9c3ffb54e13ff59b89d0b4292b63d311d06. 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/CA6D22400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0431e4a55d05d135d7ac32ffbb9c45e790f46b8a480e1a8e0de71163de99cad2. 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/CA6D22400012.