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 0x80e116f3176c08c2f07f693e396b0054cdc2795477d79693561d7bff31a4ffe3. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05b15cb2-e687-475f-be24-92ddb3c9d7a8.json and https://artists.proofprofile.net/proofs/artist/05b15cb2-e687-475f-be24-92ddb3c9d7a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lachrimae or Seaven Teares: I. Lachrimae Antiquae
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 0x840624aae5c073711108781f8fe57fe7dab78cfb7a271848fcfc3b2fe030aac7. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BER181371801.
Lachrimae or Seaven Teares: VI. Lachrimae Amantis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8e08fafed0eb94ed0750ea395823f1a8fdb628ccc2200449e98ab061ee4f35. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BER181371806.
In My Heart of Hearts. Music in Shakespeare's Plays
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1496d5a6648843bdc2b3d191e963c5bca46baca07e417c97f809cf76cfc996. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEY322303001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ddcbb4ebd19901b029a632bc01efa0bbc102e05f1a98f2d7c91431c58e4af0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEY322303002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b228bf6a10c0644a8045dfde4a1a685a6fdbe619554ac773643202695227de2. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DEY322303003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb85757c46a0484be3fd5ad692725d7caa1517275ac12540d3e8a73dc4b19ff. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/DEY322303005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd25a830e903b11a245c315a46ab78ebd97b142d27aa092a5ad7d7c392b9942. 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/DEY322303024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74df29668ff095d300017c571262d7d5c92b8f962cc55920c1c88f789ecf9e51. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/DEY322303031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a41bdf65f3ce87111f4e0058433f51462daf2a885c47eda8b171688d94bbb9a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEE219781801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f3d9524bc6d8598b3d8f6a467435e5ea309ee1799a99807a814c14be7fc799. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEE219781802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16bc0c5e7570341d59e95e6cdf2a3b51ced7ef124525998dcc0b0dc5732d79e. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/DEE219781803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0e6a450494ba9126054e84818f64367c28e8c943b2eec5921e9a958423ecd9. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEE219781804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17c699df2fef9a4956e2c2bfebb4098193606ed241771c53fac536a36b3b0b1. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEE219781805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c003d566dc1db5f59b7f4e3665ad046d7e84b1c886d014c1dbb8665f24995e. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/DEE219781806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07363a5c3c306fb5122172d2abf68f0c8b89a503dd8c204e79e8963ae067d17. 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/DEE219781808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d1bf00a872e0ef2aa8634af88f8e2e2b20b42f7ce250f32d0bd1aacefcf52d. 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/DEE219781819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9dd58f8dea198899131fd3cee1cd369a086241c3f9a7b666e36ba3c7419497. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/BER182178301.
A Meditation / Captaine Humes Lamentation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc892f6ace96b462bf4e76e08368de61377bdbee85ccdad17945e80701d56502c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BER182178302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b67f446c0a6b9c1c573d4a9fb06a93452abf9cdf8819ea9633592ceb67692c. 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/BER182178303.
In Nomine (Arr. by Romina Lischka for Dhrupad Vocal, Tanpura, Bass Viol, Alto Viol & Renaissance Transverse Flutes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afdb087b53e82e76e576ac16ed834d2f6525489be9cc1c5694b5583949d73ee. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BER182178304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4ee566b0aa91134cd8cf86b770a8d1b205c2f23db0f4c0ae20e4b2d8e1bbfa. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BER182178306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb242d4cf92260d69684f86f27e165d6f019df670badde5eddd802ad3eade2afc. 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/DEY321913001.
In Nomine No. 3: Through all Parts à 6, MB 81/28
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a747734afc4ad55a57600f98beb526ad113ea6de61cb1df88f2d249130deba. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEY321806019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb85757c46a0484be3fd5ad692725d7caa1517275ac12540d3e8a73dc4b19ff. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEY322303005.
John Coprario: Parrot or Ingenious Parodist?