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 0x111ecd6bdc955a69f2d78ba04d5f6347bd77cd8b7070b3f3e816c23579764965. 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/f2110e18-1204-4229-a11b-43b488917b6a.json and https://artists.proofprofile.net/proofs/artist/f2110e18-1204-4229-a11b-43b488917b6a.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 0xed9dac94a38c1f0d2c8da38fa4e5f79ed7a06b2be43bfbb48dd3a3b3adfbaadf. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SEYTP1608204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a40d1e12c950b5f195f81926297a7d00603660d5ed48b89a51277d12bf4e2c3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SEYTP1608205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a4cd7ae75b5d757fbc7c6e9178f8e0471baf344f74f85dad6c755bc7b6a7bd. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/SEYTP1608206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10667138d786a674405794a33c6ccab2ff128bc8870d5276f37c2a47790884c3. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/SEYTP1608209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cdf6b0046e051afb402277a2b1472e82104dca1c205000a62efb8323bf12b9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SEYTP1702902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0534623d6b97f2882449cb5dc767cb612ba9ce87b934a517bb4ecedf439bc0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEYTP1702905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa91401a004771f48ed490bf987d4a3e01919d44c938819a9df000725241e0a. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/SEYTP1608213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d1bd7be4e3951746d003657a3db302468c25e77ec2c77f5dc018dcfae2f9ac. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/SEYTP1702908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02ba569e13efb6b4aed60c2f48eafe0feb5c21d32a26214b677687b0c6cf7c5. 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/QM6MZ1869420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3460b07d38656cee3fca36a9b4dd29bb1fd66eb21254911c9203b48a9af26906. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T07:27:32Z), 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/QM4TW2124788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44bd2bf2737b90c439599fbc96edfa9c9cf9896719a031cbd4e4e50fea4f0c4. 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/USDY42128184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c9e9d80e6de584dc3d37fd6f694e54567ec5479dcca81c4227b64489e5bbe4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USL4R2226305.
Saturated Signals (Fionnlagh Cinematic Rework)
Saturated Signals (Jason van Wyk Rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82777022e646647d2794e6c0dac55f37624c9ac3ba26ab26c42bb510e2bd9f4. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GBWMY2401970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc207ebb07d4d80a8f0dba997255a4caf57d7025ff2cd47e5ff0b69a2398df3b0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEG932502578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fb03bb135ca6cf4e4d830fd2779d7d06691492af2f3c662f50ae23dc81d76e. 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/DEG932502579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f4953eadf9ed4b5ba396b0cd9a2ba76c6e88f68c13ee021f1c240b98c6ec1e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEG932502580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8975391128edd2060bb009270c7a18f884c02dc3e2082f2cd4827e8105ca34. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEG932502581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830a84a802cc8a0b9f95e53434aa4fbfbc8e63676a68f908b02148e167d13e0d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEG932502584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16188dc38e1cea77dfb26aea368f4044ee0ea99a8f5e9cd01fbec7928e0780bc. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/USHM81938660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bee7743a6cb63275778e79338357d7294a7a6c49a1a9f1429852dab52b535cd. 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/USHM81938661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c8e0d5396bdc97e5722a3c615b327a40fd5e1af7b05b45bdcc0e0a1a5ea921. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USHM81938662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c1e348359f28f8ceb9279ce0d345400063cddb99bb3e5892cc0bcc37a4f967. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USHM81938663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad02da74bbcb6ce80802c5de31c7166fde5d02351614c45c4bdc5429a57551f. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USHM81938664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc975a5d9f25e60822f96f8fafcdd76f7633c30aceb02573724ac9f8bcebbab. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHM81938665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ae2b410b057ef560ef19b5531d02c50f649cbc0f18fe4da9cd4c5bb10cddb3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USHM81938666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde305f83c6d7f1be2e09674dc5d6dbb9ae277c08e9b684f6f3117d3cc00a7da2. 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/USHM81938667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e570bce37fcfb519ec39a2c47b2aa8a9a12b552335a48c177859cdadf6c6f1. 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/USHM81938668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7b593394c0fdd300effd14289fb9038f0661ce8c4c03851d7f3db5b8a54ae9. 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/USHM81938669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf1ac0617e104ce0c0115f4af3afcc0b30275d6509d73c5c90c9eab60b956fa. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/DECY52401189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc120c53b0ff062b3df3ca1c371f9b8f4a56fdad890bf975024fa857a2d7fd7. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DECY52401190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf1ac0617e104ce0c0115f4af3afcc0b30275d6509d73c5c90c9eab60b956fa. 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/DECY52401189.