AM or A.M. or Am may refer to: Broadcasting Amplitude modulation, electronic communication technique AM broadcasting, radio broadcasting using amplitude modulation Radio and television programs A
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 0x14739d89c4fe627f336995f868370073b162fba1b8ba9f6d5ad346f89f86c4eb. 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/2eca6d69-95a1-427e-a94c-729b2b4be9ce.json and https://artists.proofprofile.net/proofs/artist/2eca6d69-95a1-427e-a94c-729b2b4be9ce.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 0x6cbcb321bfebf17ef3aaae3d1080aff797b01b4ef6f48cba76a9b3afcb346d30. 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/GBX721900555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be224ecf5ca88dd1690af6d2ee5d4ab7f2203be5a8f6089b8f793573a7ff1fc. 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/GBX721900545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789b2de17c8dd6dd593c1593180a65000a30e04c199bce6ddeac4c69491c9480. 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/GBX721900546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02192eeed7f7d7b0150e13ea7b6ad42182f8247800cb59b2212fcfaf2f8120d. 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/GBX721900558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e809cca5dc89bd9a5fd2174a56e4b73e9087dd75664eb94e231b0c0712a3d1. 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/GBX721900489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585067ab66071703d907962f100bd36640940ddc8b15b626f468bcef484e0327. 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/GBX721900562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154d647544d0349518af897c51553579871b3c0f67aa43c8559c54adbef0094b. 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/GBX721800220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c62d0475b6d2be37d0e67a9a3d12fd36ead9f5ce268ab099f88e4082de5680. 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/GBX721800232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92595dbd7467105d1bb67f7f373a29808c34381936092bf344be06a6a7ffb71. 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/GBX721800234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ed85a07b1562c76dcbd61df7b0068f0530ca31f6bd9cfd5e29ee88f78d5ffb. 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/GBX721700182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c78b688dd7b6eeb9be24c68f51a2826fd3027aaa0135a8f3937651d3f6aa14. 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/GBX721700185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbd92dbf57d96ea20a22394010314c3b36f1a69242504fce555702482ad022e. 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/GBX721700187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6806aa9e9243d6aff3bfcbf586f7dcb53721318e61c6777dd5753a0665c7ba. 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/GBX721700188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea37b6c9afd2ffb6f0f463eecfe1402321b95750f181cda43e3340b9fb0e70ad. 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/GBX721700189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc820bec79d9c50a8e32b008b6f265e913ed742bb6be5e1d19292398d88e065ee. 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/GBX721700186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f10022fd51d33f24f19fbae854d18b839c0d11a178ae60ab053b160c5909bb. 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/GBX721700190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b9cb6b8eb726476e5d77f1d5366678ed3aea42299d616ba88391b4cbbccbd3. 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/GX53U2426578.