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 0x1c9fd4e4841088966abada199668a420ef50315c644570172095a2cbb8cf23dc. 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/59a65140-c101-44b0-a9ea-f932142a12ea.json and https://artists.proofprofile.net/proofs/artist/59a65140-c101-44b0-a9ea-f932142a12ea.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c3428190bc7a107adc38887dd34a6545e8a8fd55fb1e0d79f6fe6307535b84. 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/ARF412300288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea50fd83d70be2acd2b77f6bea40b46f9ed6dbdae03e83a16ea893f784467cd. 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/ARF411300975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6ac102691526d795504ee8dbd242c4e7c32e405ff2aaf338f7a5ee915d27f9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ARF411900141.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 12
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf1c3b437ac613e7b9c3fcb1d17862b3eb7163c1c5dd8fcd80f34df4906a96a. 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/ARF411701326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c3428190bc7a107adc38887dd34a6545e8a8fd55fb1e0d79f6fe6307535b84. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARF412300288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1934a9c812cc057b357f714bab2d8923a272150267caa3b8206522df176e9df3. 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/ARF411200718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27faaab62a4e8a125ca0a0b1d3079717762d90d11ae08e0a4291ca18a90bfdd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ARF412000235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162b5cb5c91369f308d3263d5d1a38c312a38b5e9dec3b2b771d8261fa1d1abc. 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/ARF411502592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1f22f653d29f5e483fe93f14461e8742ca5e97eae4a7abd0b491a851d5c9e5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARF411600360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c3428190bc7a107adc38887dd34a6545e8a8fd55fb1e0d79f6fe6307535b84. 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/ARF412300288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a37374c30fbf0e64aa75b497330ac6c1939bbb2cf7dd9450eb0acb4d091530c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARF412000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162b5cb5c91369f308d3263d5d1a38c312a38b5e9dec3b2b771d8261fa1d1abc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ARF411502592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2c00ac5bfe21982fdce35ab14015555cd6d74ab72e01ae944df75727f7090a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARF411201182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2c00ac5bfe21982fdce35ab14015555cd6d74ab72e01ae944df75727f7090a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARF411201182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1f22f653d29f5e483fe93f14461e8742ca5e97eae4a7abd0b491a851d5c9e5. 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/ARF411600360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de849c7c3682926d0639a23924ac294cee82c65e462ee32829d33134478f82d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARF411900156.
You Spin Me Round (Like a Record) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3402c3815775d674fc02d20a0031e1484909621d3e11eb04caa82c1683b6ab8. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/ARF412400041.
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
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 19
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b2bba9b6f7799c52f9f5a05a5030a48eabd69715ecd780d35334575aeb7e8d. 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/ARF412000311.