thumb|Feather variations Feathers are epidermal growths that form a distinctive outer covering, or plumage, on both avian (bird) and some non-avian dinosaurs and other archosaurs. They are the most c
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 0x8e3ee5344d0e7f838c83f291d62db80e6312e0ef15e7417fbbbca88378aec5f7. 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/0f059e31-3469-4a25-83b9-de2a8ff670f6.json and https://artists.proofprofile.net/proofs/artist/0f059e31-3469-4a25-83b9-de2a8ff670f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lounge Covers Of Popular Songs 2023.03 - Chill Out Covers - Relax & Chill Covers
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 0xeeb254726a3a5997297c0a561a860336312b9ed67114b1f161fa997b05077afa. 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/BE8LH2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2fc6709aa30d74004e58c64da34db58d3bf63a6d89ebf995d43d1cab05de2e. 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/BE8LH2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f969745509a420acca37aadbf5678b29f5cf135b174db0d0fdfaacb5bf62a87. 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/BE8LH2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ca417ce9368c2a304f32762d222d4f7b17a199e66f4793be1d280698149980. 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/BE8LH2300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3329118a4f2f346eb6779c83f60e6fb7d7306411385491044a475dc1a3210bfd. 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/BE8LH2300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1242126ce554746ed878776f491e53f89fc344075b776ca007c07b47b2cd21a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BE8LH2300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ca417ce9368c2a304f32762d222d4f7b17a199e66f4793be1d280698149980. 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/BE8LH2300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f969745509a420acca37aadbf5678b29f5cf135b174db0d0fdfaacb5bf62a87. 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/BE8LH2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e45d3e91ab54c438565e41d8e10c68b4c2ecc1b59b582c909f9b7ce6d66e96. 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/BE8LH2200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813dcdd4bdf96c8efb0284d21cc8b372383755a1dab9880ced1f66437ed7a1de. 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/BE8LH2300297.
Coffee Lounge 2023 Vol. 1 Background Music - Café Shop - Coffee House
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb254726a3a5997297c0a561a860336312b9ed67114b1f161fa997b05077afa. 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/BE8LH2300052.
Bar Lounge 2023 Vol. 1 Background Music (Music for Bars, Cocktail Bars or Coffee Bars)
Summer Chill 2023 - Ibiza Chillout & Lounge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb254726a3a5997297c0a561a860336312b9ed67114b1f161fa997b05077afa. 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/BE8LH2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ca417ce9368c2a304f32762d222d4f7b17a199e66f4793be1d280698149980. 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/BE8LH2300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2fc6709aa30d74004e58c64da34db58d3bf63a6d89ebf995d43d1cab05de2e. 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/BE8LH2300005.
Cocktail Lounge 2023 - Apero Time Music - Summer Beach bar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2fc6709aa30d74004e58c64da34db58d3bf63a6d89ebf995d43d1cab05de2e. 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/BE8LH2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb254726a3a5997297c0a561a860336312b9ed67114b1f161fa997b05077afa. 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/BE8LH2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1504cd85c6e02f24cf4f5a490a505621e8f82634611f13994a0628aee72d65b. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QMDA62258433.
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