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 0xf82be8b59ad7799a314fbf6b4d79f06c9338b39435402adc70faa002c4d92351. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9352cf3-294d-45e7-be52-755ef666422a.json and https://artists.proofprofile.net/proofs/artist/a9352cf3-294d-45e7-be52-755ef666422a.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 0x5706112eeb5923682862d3b5ad2f51beff4fe299a2c8926aa105220c55d0b718. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPPO02004161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe65813a2d8a2df438b304f09e4a7d2c612370522f6c672542bae9eb6ca9d14e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPPO02004167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0090c950a2d3932193d6f710b19aa833ae5d9b84c40b7e92aeed88d402057792. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPPO02000733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414d35795aa792b5bfd13f05ba8a8f3ba0bf4c80ffac36d481b24b532de3051f. 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/JPPO02004170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4230ec125b4992e3a8e6342e5449ce90db59789ae07fd5a818ed224736f8a38. 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/JPPO02004163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188c05353257fa52044f9a8bf13522a2250efaf238d70776bbf16c85e529e8fe. 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/JPPO02004171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15f2c7f98a18ce71a2e5c06e5149ef29304536df3d53ca1e5269cf7406c6a58. 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/JPPO02004164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df5dc87b02f3204c505b152e3c78e98655b1066b99c4fb446da14d97fc325dc. 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/JPPO02003143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759e2e7fcd7557e90d3aade3c1167b78246c010c5d7f78a1587c2a0fbeb3a2e1. 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/JPPO02004174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a95a818d5ee9838680c10ee4dfd3acdf47fe65facd1807c9c8bba5086710ec. 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/JPR501929076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2c79420f21fa7587e5584f99981241437479c134de26671241a50975246fe6. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/JPR501821111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4633291c11df06d2c15f31b463a5fa7a385b2ddec547d303e9ce9b413d24290f. 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/JPR501821112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a4836959ec14f212539e94c7e1a03b8fe10ad46eaf01a327550f4a2f9ad246. 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/JPR501821113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdf9177206b14e97e219cc922b67a2841fbd4d6f746d772120be686a1cdad6d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPR501821116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b94a72f47c6d11fe4b0a23464ae337635cb1499f35404d7a677895a2ba8f1e7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPR501821118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84960ec8568c8698638a06b49565fc80d64443036d81d5c3cb11c6898a6f4770. 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/JPR501821119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e204af9e31fae4d513b218751b256de9c0e7fe8975dc16a9177a98b37071b9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPR501821121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a0b775e3cf7d5cc77e9a15a39841df4626acd59f94ee9c0f6a61cf680eb9b3. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:21:10Z), 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/JPR501821114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d982f66b4b2574c0f4f9315d4686113b9696310e46e973a6ee9c18afd7a2d67. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPR501717057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede424b65d215d16099fc2c833447962f8cfe01a8a32c5c08f41d32aecb0c03a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPR501717059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756ed9edf0f6960638cdbcade618b38e4c7bbec1c2c8eb78e44361705f15e1c0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPR501717061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86370afdc7d059e5617925cf221bc082fd5f9155f86db1683dfe7e11db971d4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPR501717063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18fa4a26709e5b6ae146d2d0f8b018a06be1df5ffca0e56136f4b35d8a4854d. 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/JPR501717065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132c23a757969e32647898e4a77f8a3d242809a300dfee99f0540c1b2883b02f. 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/JPR501717066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0090c950a2d3932193d6f710b19aa833ae5d9b84c40b7e92aeed88d402057792. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPPO02000733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f3981696f7198397bc6091a481293e0dd8df90aa9ca52c3e3536bc336b814a. 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/JPR501927965.