Collin Walcott (April 24, 1945 – November 8, 1984) was an American sitar and tabla player in the jazz and world music genres. Early life Walcott was born in New York City, United States. He studied v
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 0xb7ef9a8f1c554fd29abcb10948641a9defab99da1dad95f4e38ee84b2a309f56. 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/73b00ea0-ff6d-4e3a-90ce-62a41bb3e915.json and https://artists.proofprofile.net/proofs/artist/73b00ea0-ff6d-4e3a-90ce-62a41bb3e915.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 0x80c0d6c5bbc43f459b46fc21466ceae941dabe84a5fe5597ea71e0d4d3c16945. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/DEB337506202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48db478786a6ca84a6b6fb99cdd023a8d59dd1a223d00c50f11b33b95a3fcbb2. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DEC447302481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6444b4317292f19e077a7ef08783692b75c2c8c10520864f4ccbcd9909b3ec. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEC447302482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbf52abd79557c3bbfec729789dbac4c773ce55146e93600ce826b884734cb9. 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/DEC447302483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0374d9c81540d1fdfb59da92f568471aa5c9fb3bb1672d72fca9db06f6654d. 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/DEC447302484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26d43d441f361cb37181652982310b34d66e85241c487aa7e8a69f7ba103750. 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/DEC447302485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfecf95d0fa7df1fa9b0b2e7f0375a9bc70b9afd3bcaccf6ba2567c6962d2611. 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/DEB338224001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa966f10f7ae550333a0a5ae537dd42d3f763741f455fd3f0b8af20f9bdaee62c. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEB338224002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8136d9680a1ada6870d0c5df2bb96b00833aff4b852ec280ecaa61a0a2d720. 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/DEB338224003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f32108f05fa02d60470b1d274009d6faaa300e273ce8ebbdad18c3f9c93b1d. 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/DEB338224004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7358030bf9eed4596b17a7fd25e26b004c25fc7ab4cc3f4223829df7eb97ed. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEB338224005.
Fear And Loathing In Gotham: Gotham Lullaby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021cf12406a742d106b717e087a92da82ffc774bcc2e4e3d494afbf9e915a144. 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/DEB338119701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3cb639980372457751e9b217b65ae361c4ebfe28fb5f539413e959f5254b01. 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/DEB338119702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b81ae51c37151755b03addff3ee1d0de3358fb8cc98e8078e534337e22aec9c. 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/DEB338119703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a83758ce4b2751bec685787edac79ec3ce35d85d02052b6dd74f28c1b271da7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEB338119704.