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 0xeded9bf9e964e3244a85eae79b032bd87e6493ac1d9de8b6c7d711891ba23188. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb457628-712c-4ff1-86d2-ee713e32cd5d.json and https://artists.proofprofile.net/proofs/artist/fb457628-712c-4ff1-86d2-ee713e32cd5d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tema de Pototo (Para saber como es la soledad)
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 0xa18b5df80895b15bfea80deccf54100344aa483d33c78f6e3639428db0365fc3. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/AR1K22100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cf41eb7f1814981944d6ea6ee0fe333a18941133809cbe894505d516981896. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/AR1K22100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf910a6a7c75293b6eebc5cd0e775a6878009d2ffebf4a077f394797a52f596fa. 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/AR1K22100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27977be340585f02006dcdcfeda1c3ca151d0742ed22b4a53a44196f5d75d6fd. 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/AR1K22100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43e75312dc5099e1dc85d67671ce59d58e060fbf44b304ee592270a8a99d8a5. 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/AR1K22100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe048bd6d866b7120722da6f56fd082fe927d9f656e6c1677e0e0e5c100348b4. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/AR1K22100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3934cb65b98aa37b8deabd4a15dfc1eba850efc356550de189b733ae0b626e49. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/AR1K22100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c635e5dea9c71415609d2fc8c612c9999b138c87791e0d9b84d9b0670f155ef. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/AR1K22100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb597bdf0fc1631e4746143ddcd638c6a21e20865c55e9a82d6c91575069ea79a. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/AR1K22100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff83e59c315ef47537e1a4eb3c539f324125e5c073187091adfc2198406d9af2. 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/AR1K22100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9782e87ab6f7663da78b2f19e4f25658a16fcabf9bc6f30304691781c243296c. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/AR1K22100026.
Tema de Pototo (Para Saber Como Es la Soledad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18b5df80895b15bfea80deccf54100344aa483d33c78f6e3639428db0365fc3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AR1K22100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cf41eb7f1814981944d6ea6ee0fe333a18941133809cbe894505d516981896. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AR1K22100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf910a6a7c75293b6eebc5cd0e775a6878009d2ffebf4a077f394797a52f596fa. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/AR1K22100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27977be340585f02006dcdcfeda1c3ca151d0742ed22b4a53a44196f5d75d6fd. 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/AR1K22100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe048bd6d866b7120722da6f56fd082fe927d9f656e6c1677e0e0e5c100348b4. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/AR1K22100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3934cb65b98aa37b8deabd4a15dfc1eba850efc356550de189b733ae0b626e49. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AR1K22100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c635e5dea9c71415609d2fc8c612c9999b138c87791e0d9b84d9b0670f155ef. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AR1K22100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb597bdf0fc1631e4746143ddcd638c6a21e20865c55e9a82d6c91575069ea79a. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/AR1K22100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca30f628cdb2f3847ef44a71b5af34248635ad2efff4590e86ddcca7545d4aef. 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/AR1K22100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff83e59c315ef47537e1a4eb3c539f324125e5c073187091adfc2198406d9af2. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/AR1K22100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9782e87ab6f7663da78b2f19e4f25658a16fcabf9bc6f30304691781c243296c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AR1K22100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d237a42d10b7f309e94b50a007f22ab11ff416e495a8ad3774c4ce73beb6b24. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/AR1K22500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6d95395b361be5ce451bb56469a220c3349bdc9715bf28eec38d4c74e9fd9f. 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/AR1K22500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d237a42d10b7f309e94b50a007f22ab11ff416e495a8ad3774c4ce73beb6b24. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/AR1K22500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8186e2e0d934b8cf31424a4fdb258cbe031ee6b93b63b4537e1043d6525de23. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/AR1K22500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7efc106ea00578970769fc4c15bc0ae1c1737d971a71b1ef2ccc7808ef9b7f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AR1K22500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbece9017a443fa7c62adc478a88f470db755d5a969282748f28b0d377685c45e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AR1K22500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e735cb9d382553f23ec6c7092673ad9bfa0774ef10b5805ee6bc0e21fdcb564. 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/AR1K22500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb95024ccd239906f6723cb6cdb5490a8dfd8b1f4f4b98781d2791371fd9d09. 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/AR1K22500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7c5e4bafcde1fd76db5ddd9ef738545206acbac8c97e7abd48c32b4c5d4fec. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AR1K22500009.
Cantata de Puentes Amarillos / Libertango
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842d39fa8f3153a1f8f8c3a0780fbf57e7bf58a592022ffe67692c6bb1b8c709. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/AR1K22500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6d95395b361be5ce451bb56469a220c3349bdc9715bf28eec38d4c74e9fd9f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/AR1K22500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d237a42d10b7f309e94b50a007f22ab11ff416e495a8ad3774c4ce73beb6b24. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/AR1K22500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8186e2e0d934b8cf31424a4fdb258cbe031ee6b93b63b4537e1043d6525de23. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/AR1K22500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7efc106ea00578970769fc4c15bc0ae1c1737d971a71b1ef2ccc7808ef9b7f. 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/AR1K22500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbece9017a443fa7c62adc478a88f470db755d5a969282748f28b0d377685c45e. 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/AR1K22500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e735cb9d382553f23ec6c7092673ad9bfa0774ef10b5805ee6bc0e21fdcb564. 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/AR1K22500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb95024ccd239906f6723cb6cdb5490a8dfd8b1f4f4b98781d2791371fd9d09. 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/AR1K22500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5973ebff8ce74250feef039ae7dad53ca51cca54c6b931b430fe162564c82aa. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/AR1K22500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7c5e4bafcde1fd76db5ddd9ef738545206acbac8c97e7abd48c32b4c5d4fec. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/AR1K22500009.
Cantata de Puentes Amarillos - Libertango
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842d39fa8f3153a1f8f8c3a0780fbf57e7bf58a592022ffe67692c6bb1b8c709. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/AR1K22500011.