TTC may refer to: Arts and entertainment Tao Te Ching, the collection of sayings attributed to Lao Tzu TTC (band), a French hip-hop trio Businesses and organizations Toronto Transit Commission,
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 0xbe11e17e702773cbba2f18cadd494c004ec7d1db50ab2acfd65c70de6a9eec45. 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/2ddecc6d-912b-40c9-94f3-8c2eabb1b025.json and https://artists.proofprofile.net/proofs/artist/2ddecc6d-912b-40c9-94f3-8c2eabb1b025.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8543902318c2886b4547e5e08e214e1eb988448443869e6e6d0b2a21e40c32dc. 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/GBCFB0200240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e33a1eb149f8ca04ffc3304bd6e0e67deee1599a51d2f637dbf8fc67d01e2e. 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/GBCFB0200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc992b605b8b5514cf41bb29009f145b6bdfb96589f4fed8bd5d413556b4244. 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/GBCFB0200280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c55bc2dea340697ca06ee051569971ee15b7a3c0f44a5400092b445881b2f63. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GBCFB0401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32e916027b849068f61e64136c52eb7f4de5517d2497194428722bb6f5ca469. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:06:03Z), 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/GBCFB0401003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb454efb2848299af6e9312250025bbbb6e58ca4e91bfaff6dccb70986c6ba162. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBCFB0401005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee4d60e632335b23a1bba8510ca40f5ee695bd9802cafd9b8b44ab13ce13235. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBCFB0401006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8be6beae90df8cc3909a0cd8822bcd648052f3885770d7274c5d3b4ee971f08. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBCFB0401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f9d64932c18417262aa07ecda91616a3ecd29726b2778d3a9025a00b038f2c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRV640600165.
(Pas la peine d'appeler je ne réponds pas au) Téléphone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b2b4bf24c3c238c03e3abbb711bdff948089097e314ca1fb4b4ae9a039d7f5. 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/FRV640600166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51f345fb8b7e2ca7d9d118fad75c1f2010687d0dd4b53c2fa0bd8640156b77d. 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/FRV640600169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe05a184028b364a0b0d1c1318c3239c85e3f9cbeb72e5500e531bb4f270b84. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:04:49Z), 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/FRV640600171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddb44a412780824318c5dea4b332a81b496db39c4dac023fe6b39337554369f. 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/FRV640600174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2461ad86056b13d3be88950e082a870250a432e1f7d34d846adab5a719bdc0dc. 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/DEAE60500486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc92d26d585a10b5f4120388d63a496fc385251909bed56c9d388025905778f1. 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/DEAE60700665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7379176a31994fee60ae4f3bc117d42c9c668212359fedf792589ea179f66372. 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/GBCFB0701100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561a599328a6678abdcef0fc6a40b7a5faac933801b67bf596fbd73f05cf3541. 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/FR0U91400874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7379176a31994fee60ae4f3bc117d42c9c668212359fedf792589ea179f66372. 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/GBCFB0701100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3229c58f9faae6a88600e6f5c4ea6e89c507b6328c58c8a1660ddf6af6d73f. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/GBCFB0201994.
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 0x7e3114ef1d9685267f4cfc3075a9858288f4a441223a5ee21865f29d2cdd9659. 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/FR1MF0600060.