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 0x283b9c7e2a0a53048f4271f445b77b1988ba9ea7b0a24f33c53009d8f8244670. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d2b7c71-19e6-4d79-999d-36e38922093c.json and https://artists.proofprofile.net/proofs/artist/2d2b7c71-19e6-4d79-999d-36e38922093c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bossa e Sentimento, Número Dois (The Spirit of Rio de Janeiro)
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 0x5399fb94a5014b9238efe01c275a177c517cb8f6a80d991990f4a4649223c617. 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/GBDCR1100610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb12c78b06cc6cdc6eaf186d6b7a9d28ec002f5bc342204426708e13c1769b4. 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/NLQ731500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afce18a21d8d66e71a8c1e31e8951975782e38aeddd119fefe11c8a7654d407. 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/FR6V82398684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf22aa381138b44b4baf58eabc2c8ffebde6b2b50127e9c3ad339fb4cb77b930. 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/GBDCR0900193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7756f0cc5fecee0ed47c8606145090dc622882fe4df092da1afa12796cbb63d5. 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/FR6V81890603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210e8ff2fecf80e3892bc6ecaad7f3769fb4389cf7ad3a5f2829c89701d06576. 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/FR6V81786423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71781cc0ee642a81231ea9a5c0cc92772afa663f3750eafb2c5f8be145de0c3. 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/GBDCR0400287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047c5cff6b0c139d12aa37b79482ef43a8bd230ffb9295e27f31f0e637f338cd. 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/GBDCR0400254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f412028e72d56604830f149bb0be96c23b2ef029a6af68af873d61e0d9e6b7. 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/GBDCR0400255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1799a1f9d0bc914ae8d5572840141a13d356a9dbc86812d046151d160430cf7. 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/GBDCR0400256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2293b9ff39191a5b1d2576b908afeb47b80d6a8993a1403b18c69cb1364fa1f. 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/GBDCR1000402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29516fcbdc985d316bc58e9b70237207e71911051b34e3d936a5132bf0740bbc. 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/GBDCR1000407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec1f470d7ce53e6568847fc6fc280be61b8f4187f63563a90b6157e4cdb4484. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRTPA0100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0023e6c858677ce951bb8732eb238d67c272b3115d1ab3ef9b694dfd50d755. 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/GBDCR0400276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f42f636e7a90dbcbc5b556039cae959ede91534e6bc43aeacb91787fa92873. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBDCR0400314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73111b4c4149fd4cbdf71bea8d1d9d1b7227231c5380730050a4d4e69f085db. 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/GBEWZ0302908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb371fab123697fe416af5646efa9b7c94b43dae726765fe8d190dfd0fb7326c0. 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/GBDCR0400226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4601822284acfe8a036913f187ef1e773df1f27eca12b3ed94fa282b158c5c7. 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/GBDCR0400288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc74fcff75cd7f5c524a1cdda2e89afd350e26bb123345d6e9a59e4faece9235. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBDCR0400292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c8e4cc6dc638f8b109025c1afb51b631e07a5a3d9fa584a5c699a1e044f160. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBDCR1000416.
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 0xb16c663a28ed690d9cab6c4a2357a0d8eb78e543997b77d80d3ac1c50677770c. 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/GBCLQ0700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493f34c83b9da7214df4e604158a11fa80dea115bea6cc201a27effbe1250d6e. 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/GBCLQ0700112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c1b2c9df3b47f1a7fcecfd357401c5288d1ed37bab435a84c59149cb36bfd7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBCLQ0700117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf538fab1f29510f4b5e93df98f807a4862e5837dd91175dafb11401e51da1c5. 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/GBCLQ0700118.