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 0x8ef4193f4d8d779e9ec336737946c6caa662acd826723bb84878381147b2e59e. 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/1ef8d76b-6180-4b0f-b0f6-a9e25b3d10d4.json and https://artists.proofprofile.net/proofs/artist/1ef8d76b-6180-4b0f-b0f6-a9e25b3d10d4.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 0x271deffe9a9787b8f8e552e826df37bf75796ff8faca87eef95c6a2b3b3d4a0c. 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/US23A1552328.
heaveN caN waiT: thE narroW dooR (vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70516f81b745f99278e23069e0d7939824fe49966c32ef5d9b8cf2e9a9e26756. 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/US23A1542527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37688ea579c7069974b782dea17f45dfa958509d7297305d4bfe80a2e8e99e42. 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/US23A1542528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f76b2ee8b58a489f77bac4157bdfecdff6381c5c9403888f50ae7d354955ec1. 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/US23A1542529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71f1930ec8478ee381bb16205e819b77b756e734fb90b9d363dd4bb71bcdeaf. 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/US23A1542530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e50b8dbc11bc2ce2d361d12d9986291d531aee6e4185dfaa9cc7702294dbcfb. 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/US23A1542531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4551bf3e0633759d53e7e4b655c7055e48e59c7c611ba639ad9a19d227d302. 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/US23A1542532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfe5b2096259aaed71271ad749e5b50221c3672f900a06dc76998335de92f54. 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/US23A1542533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a858b7986162218943e820d970e69e2cd180b8762832d546250485cb8f40f0. 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/US23A1542534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a3406ba6de68414cb6540f4b56dd8e2446e5156f19415b2e47a240fbe22a2e. 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/US23A1539516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765d76b288777b34e547b4190436dbc4e14e82929a3839c597f7fda7aa27354f. 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/US23A1542535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bb1be27851fe861cf5f60a94cba70c79a0b44c0aa262467d8fe4d7b5346fe3. 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/US23A1542536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f76b2ee8b58a489f77bac4157bdfecdff6381c5c9403888f50ae7d354955ec1. 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/US23A1542529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a3406ba6de68414cb6540f4b56dd8e2446e5156f19415b2e47a240fbe22a2e. 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/US23A1539516.