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 0x47ced40389faa41cb433c7e786172f13f05144cf4f5fcc51765f84aaf7b82412. 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/85c066af-1993-4606-8ab5-f24df6df8628.json and https://artists.proofprofile.net/proofs/artist/85c066af-1993-4606-8ab5-f24df6df8628.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 0x88e4126a88c4ca4c609b52aa3032d111fcfff70381a1a2e6155890669df294cd. 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/ARF410600519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04173d7e87671e4bbaa42bab9ac2063f71ea5a0c89e6381a20ce33531d92069. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/ARF411001562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062010000363cc658c37ca09f77aa180a36e5e9a6a375160976123e389fb1b17. 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/ARF410600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03356c9623b091c3197b1f435d064cabadc0ccb51c8f542a00f63306a360a63f. 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/ARF411401172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3776c1ffcda25b61e4216b24f1b6541313180f86b513ecc765b11182f98634. 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/ARF410701611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61710205b685f1a694c045364bedb0da563261e32d7e914b3915dba1c26adb04. 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/ARF411100990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037a11b3ad5f1ab625067798a57ef55b7a92ffa3d579516ab2df38de0bc1afeb. 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/ARF410600497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843288f3d837dc59a153bb22a8848bdb1239a52e986c8f32d0f7d3f6970aa2fb. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/ARF410091133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5db5fbd84df2c0b69ad597964460fc357ff309c465a35ee89ed60de75d935d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ARF410600502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e4126a88c4ca4c609b52aa3032d111fcfff70381a1a2e6155890669df294cd. 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/ARF410600519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03356c9623b091c3197b1f435d064cabadc0ccb51c8f542a00f63306a360a63f. 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/ARF411401172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e4126a88c4ca4c609b52aa3032d111fcfff70381a1a2e6155890669df294cd. 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/ARF410600519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed00fb3df51803eaef6dd33eb625bd66e31a49ff1b9cc135e60879bbde990d42. 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/ARF412000019.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc6d0110b3c08fcc2d752fd40e9ede4802b43da3c743c7a9d2c008d819a0649. 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/ARF411701327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04173d7e87671e4bbaa42bab9ac2063f71ea5a0c89e6381a20ce33531d92069. 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/ARF411001562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062010000363cc658c37ca09f77aa180a36e5e9a6a375160976123e389fb1b17. 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/ARF410600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04173d7e87671e4bbaa42bab9ac2063f71ea5a0c89e6381a20ce33531d92069. 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/ARF411001562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03356c9623b091c3197b1f435d064cabadc0ccb51c8f542a00f63306a360a63f. 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/ARF411401172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04173d7e87671e4bbaa42bab9ac2063f71ea5a0c89e6381a20ce33531d92069. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARF411001562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843288f3d837dc59a153bb22a8848bdb1239a52e986c8f32d0f7d3f6970aa2fb. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ARF410091133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e4126a88c4ca4c609b52aa3032d111fcfff70381a1a2e6155890669df294cd. 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/ARF410600519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062010000363cc658c37ca09f77aa180a36e5e9a6a375160976123e389fb1b17. 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/ARF410600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e4126a88c4ca4c609b52aa3032d111fcfff70381a1a2e6155890669df294cd. 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/ARF410600519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dfe2536820e36be155e017fa19afffa0b1693396d0e6e0566b3d16a7f4e88a. 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/ARF411201184.