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 0x9337434e0ceeee3d4767107cdabd7ebba4e37880d1c6209ae8c9272dbe675a08. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7407e818-ecb5-45a6-afe8-45935d1a2cd5.json and https://artists.proofprofile.net/proofs/artist/7407e818-ecb5-45a6-afe8-45935d1a2cd5.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 0x07a0dde2e900757b6a677111bde79edc259201865b6d63c5eee140b519b7fb25. 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/TCAEM1949743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395fce6ee9b2225aba69ba252617ecc71c1282f61e5df0ac72a6e8c15d99b164. 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/QM9AA1823479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77da975e4a2810f51a29355dd6c54ed5bfb4b0a22b2ed4e1715e8d96f5f88122. 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/QM9AA1823481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f8b919badc783822835efb34bbd5e0449bb7168135305d96f6515705351cfa. 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/QM9AA1823491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102b29c4eb4d5cdebdcb6ece5326bcd89a389dba786a4a78ed5addef44eccb2f. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/QM9AA1823493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf0b2cc1432e9a427149fece6581c5d3cbdfa2cbb02b688012857551d098cd8. 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/QM9AA1823489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137c921f7dfff6fc9d05e22d80206f69496b2e7c63fbe3b36587bfb26a361def. 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/QM9AA1823480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75d08f805e6f7c9649d17d4c7cf6070ff53dbb63124c82d7d8aed1c7c3c73be. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QM9AA1823492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf291a1048628c3918d1f55665d2e95104dc9c5596264aba8dea741c9922483d0. 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/QM9AA1823486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0353b930d86804132ad811586eb45f6a5260925fc2ce602b52208c6ed4246100. 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/QM9AA1823490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6685134f2e124ed9108e0c0208d204da3afb4f7f7f9e6869112b9a9046ac887b. 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/QM9AA1823484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec937c7000975c487513b957620d82e25d12c876a0a402f01f642d144d639fb7. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QM9AA1823482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb0f6df3d03006c96ce1ae97c60fbd613e19509d1cf146191907bf1c60b4c91. 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/QM9AA1823483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58525ccff939f5e5e022216147c60993c5946e2c7251fe5dcc7f7b10aca4afcf. 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/QM9AA1823485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ebe20db4330bc8b293c8738acc80eda305ef3f699bf6ea4746201575913acc. 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/QM9AA1823488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716b887fd612ccea227f162234ac4d4dc7a60dff2b699a058b0b7c7a1451c80d. 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/QM9AA1706662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3e558f93397e69238eeec15b21ea051ab6b1f358e44a070103133e12ca658f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM9AA1706665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d6f50f016f9097002930a03c578dcfa74346121c51239a9e2d69bf3efc8a13. 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/QM9AA1706666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920b28c4ac6e8e9f54c1c721bbd7a7b7d8b31dca786fae6094c823fdcdec4dc1. 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/QM9AA1706671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca157f6f9c5c76843cf1236a95714a82c782b1facc261f14af47a1ba753d8b53. 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/TCAFH2060194.
Themes from Sense & Sensibility (Original Score)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd929b922086ae2533bbc5248506ad4d1efa02aa463e8d61bd6f65b1cd3ee662. 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/USHM91923167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f63aad968a8978989cd399df139b2f1597ebc0bc3f20dcfe7ad853428b1a6f. 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/USHM21932786.