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 0x4821ae87fdb4fbb5c68817d0d61bc3303c867122cf07e20836656fde7604b835. 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/b9b8ecd0-83de-4cf6-8763-b32f997982b2.json and https://artists.proofprofile.net/proofs/artist/b9b8ecd0-83de-4cf6-8763-b32f997982b2.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 0xf09fcb0418f83d241b6fed7f8462461af2595863fd05e1631806259cc21999fc. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/US83Z1459039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26de407369574ee7fc0adbe3e0dac6e77e90bb035bb4a3e5c67a0a8258f8ffe. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBKQU1468370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a647db16e66d464fc034dacb49ca680fd74120626af9858209d49984544817. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBKQU1468371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6436f22dad5eabd3b2f3552eda0dc94406254d516a4d9107c4c647e445e09214. 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/GBKQU1468372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd308d3384de93e8c7247f9814461084c9470af7cb425c97d6bfd6ca18ca563e2. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/GBKQU1468375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c0e91cac58c43c3ac4d256e3a7e93af55910ffb5e2521fb52d881eae1f89de. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GBLV61406652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e275e1d017c07e9ff620175ac3295c42c2f7957f6d6ea6048342a3feb41bfd. 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/GBKQU1538129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2871534748e2b73299f6daad3b50c614a40ae6b0c540ebd209b037937dc1a35. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GBKQU1538130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3832e141e1bed15f7e4865e2bbd728060b1982e062e4848c6ad78cc0c4aa05. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/RUA1D2246226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0319a9ac4b6845d2ec0ad766609bfdd66c7ccb4d27edd715aefc8d2996b59a. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/RUA1D2246229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa732140a199a37133ab895346e43f32c3b5246d94c896a9337bb4877412904d0. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBKQU1605411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a5d1608ee4ee757a389279f67fafdb2d481c288e44137ab4a90e1f0f361831. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/RUA1D2233504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436f99283d0337a4e9d776b9895ff9c073a28513a02a723319d8bde972fc7342. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/RUA1D2233508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2c87f6850d4a5b35dc600b097b1dc8e6a58425cba2e14089c346ac629a4a5d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/RUA1D2233518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4303140918c3e2ea052a48a3e9d19fcc57dd22ab04bd6e3f2ba105372113b69. 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/FRX872201406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7b6521226215831f41b808b7b7f747adce1ce3ad7e7de6f4db778fcdb86ddf. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/FRX872201409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ca3fb4e19e61952067c03f5c011ec04b1a5778689a1ecca3338b5964aa8939. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/RUA1D2223598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074ecc664b1aa511ee23be8ceb47891142accd34f1fda28f6a96a615265a15be. 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/RUA1D2223605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716a610aa436d1f1979ebf77058b14e099e6d586ca737e9127296a5b302ad626. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/RUA1D2223606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aac7dc1db87eec82e7c6449c99acbe807147e5646676c09cf1ecaf9cd99de1f. 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/RUA1D2227920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f94ddb2e594b7ffbc700c9204367837e6bc79335adda6917ed7c02159c4bdc. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/RUA1D2227924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2030e104ce97ffe20db25ff53e9e07df7af0443040430bf1a484ece6ca6791a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUA1D2233473.
On the Other Side of Heaven (Forgotten) [Instrumental]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9df4508147e0c422a8c58fbd5f3e75eeb1b56d703cd97863150247017bdfb70. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/RUA1D2233485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ff13eaf55e5b4cd6814e637643ccb3da43bca666daad326ddf3730c2d71541. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUA1D2235033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e5dacb6b7a399990919079ef96b7956e4bec550c5427bfb2a6ecbba5e83d8c. 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/RUA1D2227935.
Mirror Reflection of the Broad Expanse of Heaven
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58588c779a09067b08cb3a1adbc7eda18a4aea2fc7b55ffada80e41af4109804. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/RUA1D2227942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac319ae50cff69069dbecedb4921f9713911dd00723bcc52f13130e9431ca6dd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RUA1D2227945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13eac1fa95e0e0df839d78087750030cd09763f2198c5a0e487f3bfdac94f90c. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/RUA1D2227946.