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 0x719222c7af533234896a51cd734c47fb16a556cb31e217e27d65f3d7620dc32a. 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/59a118e2-d9dc-4f71-bba5-b4b03e3fd720.json and https://artists.proofprofile.net/proofs/artist/59a118e2-d9dc-4f71-bba5-b4b03e3fd720.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 0xf095809971eca837263fb19928978ffc9020992ec767fcfdd2f8e8367f1dd85d. 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/TCAIP2489749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f243ed858428f630f5137c4526445cd07fecd59a31df0734e1cf4b8841e630c. 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/TCAIP2489697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b703f8c05d0db19a765fe5cf847c46f715bfbc8fa499569e78aeeb685e69f95. 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/TCAIP2489788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef4d63ec1c548e6925a79d064a521e1064241093839b563239d7c24eb19a758. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAIN2468271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58c440a1c6cd4434cc7a5f09daff11d4b1a9eebc2e4fc1ce8d18b0d1381d58b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAIO2466257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e01a1f2b347c668ad56b3bcbaec89008995fb095d3abd46e0f2213564fb30a. 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/QZWDE2491172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23214fc769cd378b795e855bab30e1d62794772c29d6cac903ae04d4ce1f4b8c. 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/TCAIN2473441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5719d7db629d08f9b1d5584f36231e97d82b1b850f2ebf19ca0cdd149a2bb15. 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/TCAIM2454186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf73abecba1095f19039ca304032e84f9386d3bdcfe0851b45039ae41fc2657c. 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/TCAIM2454203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9302c2dcdf50cff05ab83b7d8bc39bd9ce6047d45af42fec5cb2a12642d273a0. 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/TCAIK2440253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3617f95932b6ae242b15870d9b509f07ab23f27c7ba4050ee9da3b4d98ecb403. 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/TCAIL2403895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2828f84be7e52d162682b00b698cf33a8eb8249be84d1cc339fea7220a16b70. 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/TCAHZ2427444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484f984895f048054c25100f5c84f30b1dd80b240f26ce6ba3c3b04df8057aef. 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/TCAHW2481345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14edeaac9d1c51e3ed8f86081d2c03e3a425e16570f6d03028640ef3340a7ce. 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/TCAHW2471086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697c01627496faf64a0e30d5b4a479cd3ac3430f9eda03411e75878e84405945. 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/TCAHO2380131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d56cd57afec55ccdb738fbe63ee724e5ae0efe403888615b90e769c3c30ebb3. 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/TCAHD2363093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811315265f8012b671bbf5a03c559e0725a9bef982cc206859b03d780d97bb65. 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/TCAHB2307750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3243efaa4e881e2b37d9e7f8c3727c2c153e493586185364c2313af93e4e9f6c. 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/TCAGT2373904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fb8754b8c6596c8a3b5c5f2167a9069faee38ff75cd839c0777664d9b1e001. 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/TCAGN2278693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f780ba6168e5beda5aed168fca2dee8e1716da2ed806301ad916dac2767544. 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/TCAIA2462880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49125cae395ef9db263028f110ba2ec3d352c72d4d6c9a673b2313e98ed5e153. 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/QZNJX2479055.
50 Men Pure Dialect Praise, Worship and Prayer Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49125cae395ef9db263028f110ba2ec3d352c72d4d6c9a673b2313e98ed5e153. 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/QZNJX2479055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb003cfb5cf5b445a138697cef32244dd678dda9fe6bfd281c2b8839f03168617. 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/QZNJZ2408385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8c4b70da8d488ea789bb761b0c99c5fcd948e3bb63ec5fb2cb7618b60c909e. 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/QZNJZ2408386.