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 0x2f6fd8b6468aa9932dd4fec8f352e90aee4888e1998d45a59bf323b277791817. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a823aa95-7cf1-4adc-a26d-29192c257582.json and https://artists.proofprofile.net/proofs/artist/a823aa95-7cf1-4adc-a26d-29192c257582.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les Blancs Ne Savent Pas Danser (Réédition Digitale)
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 0xdf02f84aaf669e260b90c4d3ad806a29c2096540f60cf60771c89e486a8ad3ed. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:45:02Z), 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/FR6P10700480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8d921dfb37d3b61bc92a0f1d01ca9e469506a959e46e3f32b9d75db2f808c4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR6P10701040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804e529bc85fccb34e8c7294d3c4c29f20ee57a216e89f6f7ee59bbca5a30494. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:09:06Z), 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/FR6P10700540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423a2f79b5faeee7df2a2dc7dad230c03cbf85b1a311acf2a113a3ac42d3780f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FR6P10700450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a52b2a7fbe13026f082140145ba29234a6079dd5cdfc0a1f3c725386a48722. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:23:22Z), 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/FR6P10700510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bffd53d6fec96dd283758643f6995aa2092f4e2c161324082148907f140a0c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR6P10700460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9062a23cd64f64e959c1344c6c286e6bd81a6383366024a0d7f0c2fa3bd10e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/FR6V80081004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574151001f12cf5d5e854f6b045edb183b0466ceb140c42b71f221d6290e35e7. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/FR6V80081005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421a7f767f49bae05d51ea2743438bf818f1f53694fad9f4fdca923d5b118fca. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR6V80081006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c5db8536008455df67f9d0c27d2b912f2c62eb2da9599488021222729b773e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR6V80088542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33a162c9638cf2a35635290aa27fbf9746c71999b2eecded08aec83bbe8b2c7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR6V80088544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cd48090e66177eb72f7db95ff1c3d009fd41e1c0dc289e8b433da787f4dafb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR6V81359026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cac0f4d92c7f1ba6c916117c773e0f1616571c9655b522195a48acce1021e1a. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/FR6V81513346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a178df06170446a83f182ce586263c04810a93e0bb99ea17047bf6e601609d. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:58:55Z), 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/FR6V81513347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c9f9b2cc906d8481a8360f6aa9b03dd81e5da594f736b2aed555494354336f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:57:17Z), 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/FRS182108663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2723e922d87052c3d13ff6dc1ae756e72e17cc380c484b516f9c385845f4ad67. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:34:17Z), 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/FR10S2250717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6ef3a2920e0b99c18c6581e9cfc8d86802edbfc23bfbc8e389ae2dfdefba00. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FRX282323840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94effd0db3a8372a7fd645f42038988f9ff275ef7bf68fe968410e837a3bb94. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX282323841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077f18e295336ddf908fdb293ac4f1b6c2c7694b2e0abf3433904f2439e45c33. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FRX282323844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9578a401765d46dad9e2722635272224918eb76fc03ba79803c41afb4b1cd06f. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/FR2X42494333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd04d1b868a62e9241a2275fe0491e669cbf7ad53481fd4e87389e958d3002b. 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/FR2X42494334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b07e0791aadb6fcd206a06f498908e4f67faf9566d24e4f57e33e70ad73443. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR2X42494335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ed6918924944eb77a54a3656d0d72c39dcb88358314a977ca8e86e88bc6863. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:22Z), 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/FR2X42494336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8966264641c8f04cf05b8d4c10a1d48030308e835311b7efa7769bae1495704f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR2X42494337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280d2f867f5b7716a335de6364d225ffb03aea19370e5f9a1573740a278cdf26. 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/BEEI51600013.