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 0x6bd7568cee0bb182a3197632a1086124255061bdc18b56a6a98171327ba14f38. 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/1d434af9-172c-4f2c-81e8-e1a05831b65d.json and https://artists.proofprofile.net/proofs/artist/1d434af9-172c-4f2c-81e8-e1a05831b65d.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 0xdde3a58b34cc1ce6231feb1db3a61a124ee2ce96f12664e5212cd21d3961d010. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZES62345740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2eef3b982b8a8c9f6691f1c1f62ad81745dcddf3aee012b98cbff3344bac93. 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/QZES62345741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd158ac4ad65407201742d158350d1610b5afe87b1b39c53553cdbed6bae780. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZES62345742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7ae0431704880b81e6b4d681a1592feb10c8dc033f56523c912daec341fbfc. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZES62345745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db70b0c8032676ff92f453f49a3202384f4d2d08f262bdbcef0c8ab7196bae6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZES62345746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe26b4f451f77e216dbca21d108069ce50e85095e8cb5bf24dbe659b17d64d43. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZES62345747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5511ce6243728e318e811b623a20470c138164ef48909d1cd8e562305171f30. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZES62345748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74437a85566c4190e880300f5a2dea26314534145e26edcd2735727049929b79. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZHN32350296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6abdc73acb569b2f93d1440c82adc25356c995d8f80a35e0d8800120ce8be1c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZHN32350298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b89ade242c1dc729fc940cf26a83bcaf99285f1125d762163234f8ce2a09bc. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZHN32350299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf843dd3a5d51d496b979e6d0bdac2b54c2abae8f9780873b0b277550ac53750b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN32350300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579992d190a3b6599f2b33b2c048a93b9e773f13e9be5cba05c03606cd02afde. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN32350301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b337817c5c59d8b84f9f145bc8ca216b2c6accb091ebfe2aec4b6ba346eca7b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN32350303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c66b479235533f10867bf5d7a032fb3024408c8bf8e1908ace06c129cfc3b92. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN32350305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32ec36f6d90c19b5bfb16e331759868a5d07b71ef4b395e8433064d2cd580e1. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZK6J2412990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace5ddf52390b50446ea6e5b957e8de31bbc0f6dcdd686beca26208ab4ae3321. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/QZK6J2412992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5d11c373a01b1c6b2d385098abdc9dab89919182c6efc840e435b319669bc8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6J2412995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c053bf9c2eda0869200a00188fe23e937a82f156efca632d8585d1f5ddf0fb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6J2412996.
The Waters of Heaven Relaxing Music Ep.5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3ec4e6e642c2392951e9a873ac44835c947a314fc23018e9e4022ee7c787c2. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZRP52464990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aca1f47e870780a4dd2aa8e9ea1e6d04e96f857644117ef63806c9d6caa5a4e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZRP52464993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b87c35c76e4b4be21445eb9473d2d9cf4bdfd2875c669c4204bcc8aba869c96. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZRP52464995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9691fc28a69b22def5bb49d35b8527fed47792ec010c0c446e6af177c10efa1b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZRP52434278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff9e415cfdca6fe479643748d004566d005750411f0502bf4f15c288c118f3a. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZRP52434282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58706076c9181d2d1ebd591913b1d8565126c5db0f3b59883eef045b0b323cbd. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZRP52434285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa09a835b657f882750955844a6c3d062bde0ff0e59301b89b7d092b3e11497. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZRP52434291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2639f1db4b9b2ae6e3ffb038e7b4914e0b7331060ffc527e12375dd3e74ca21c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZRP52434300.
The Waters of Heaven Relaxing Music Ep.6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ea56df440e131e1c9fa64d38d2e7a51180049bacf00fb96f5af32bef2f1d6e. 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/QZES52584272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc20f6e8aec1cf5b4cfcd9dfce84f52c428a3812aedd55c4d285c189759a886. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZES52584276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a54933798146d846612512a64c218708a4ede22d2dc2e2e46a4923b6c9be0f8. 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/QZES52584279.
The Waters of Heaven Relaxing Music Ep.7