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 0x55a093ce82dd868ab166e5763d32b1d67ee7f36babbc925376294d5d93faa6a1. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7071b2ef-a850-4eaf-b920-f0e8728d9bf6.json and https://artists.proofprofile.net/proofs/artist/7071b2ef-a850-4eaf-b920-f0e8728d9bf6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Martín Palmeri: Misa a Buenos Aires "Misatango" & Tango Gloria
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 0x5d6a55f703f448be6595283c96a79a6573f56bf6a4673f28dd0a832effb3dc8a. 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/DEB201609201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf403062cb349955bcf5a1799068cfae5ba84e0e58dfcff8db841dca912e36f2a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEB201609202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c4983349ec101b166e0897bdc2f455134e9569db339c01df894bfa553b6efd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEB201609203.
Misa a Buenos Aires "Misatango": Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9ef5b834ef2ce619679d18ea2bb2ea4abd15ce0f0de2a28aeb02e2cc8c9de3. 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/DEB201609204.
Misa a Buenos Aires "Misatango": Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e5f1c2d78b1724d2067470e17bdedfededade78854970ccedd214763375953. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEB201609205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616e6f376331dd4d76dfdd65824ffcf5fc0c616dfd12d5fdb95667555bc690d9. 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/DEB201609209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96062bb6e35e8c53cac39f1a515037735113679e508d73133ce85eabdbd95a9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEB201609213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e0ddc3b518be43383f3e7ef5ae5579b5d39e8c46ed022884cfcc09bdc492bd. 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/DEB201609218.
Misa a Buenos Aires "Misatango": Agnus Dei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad981304500ead84b3ed835ab17cce8e3f3c17b75844b09dd7b9da9d0fd5162. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:39:49Z), 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/DEB201609206.
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 0xec36f8e1fa1a16e840a8e394e1a69a9e21e7d8ef9ce12624dcb9e6030f9b30e7. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/DEB201609207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17034f6eef8a58ddbbad9dc1b213edb3127154fc499ce7f4e57213fa5de89ca5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEB201609208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea39895ef2469bf5f3289603f35c2261ceb7c53624981ba60212f39119d2885. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEB201609210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d30565f3befa1df0c5fb48dc98b608deccc735eeb899508ab92afd0ef340f7. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/DEB201609211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9753f938d16f36a3ed4aeaca47ce4c3760c5b599422458d3c6e662aade3f95. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/DEB201609215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6f006ec5dc2e47b589ab10ab13ebfa961118ae1a3de6e5a43f1f0138b29029. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEB201609217.